Final_Manual_288+ by Meenakshi Bhatia

LEARN: Electric circuit using different loads & components. More than 288 exciting educational experiments

288+ Science Station

288+ Science Centre 1. Battery: Definition: A source of energy. It contains active materials which are irreversibly converted during the chemical reaction. In physics, one "battery" on its own is called a cell. Two or more cells which are joined together are called a battery.

Symbol: Uses and Function: Batteries can be used for several functions: 路 Storage: Batteries store energy being produced by a given generating source, and when this source is unavailable this energy can be used by the load 路 Start- up current: Batteries can provide higher currents to the load than the array alone can provide. Many motors initially have a high current requirement. 路 Power conditioning: Two cases where this feature is used in directly coupled systems, such as water pumping, and in uninterruptable power supplies. 2. Switch: A device for opening and closing power source to a circuit

Symbol: SPST = Single Pole, Single Throw. An on-off switch allows current to flow only when it is in the closed (on) position. Uses and Function: It directs the flow of electrical or optical signals from one side to the other. 3. Reed Switch: A magnetic controlled switch device that opens and closed a circuit A reed switch consists of two ferromagnetic and specially shaped contact blades (reeds) positioned in a hermetically sealed glass tube with a gap between them and in a protective atmosphere. Reed switches are available as form A (normally open) and form C (changeover), and are operated using a magnetic field generated by either a permanent magnet or current-carrying coil. i

Symbol: Uses and function: Some common applications of reed switches are: Reed relays, automotive sensors, robotics sensors, security sensors and toys and games. 4. Resistor: · A resistor is a component of an electrical circuit that resists the flow of electrical current · A resistor has two terminals across which electricity must pass, and is designed to drop the voltage of the current as it flows from one terminal to the next. · Resistance is measured in ohms ( ) · The physical size of a resistor also varies dependant on the amount of power passing through the resistor, given by: · P = V x I (Power = Voltage x Current) (power measured in watts)

Symbol: Uses and Functions: The resistor's function is to reduce the flow of electric current 5. Resistance: ·

It is a Measurement of the amount of a device opposes on an electric current through it.

· Ohms Law: R = V / I (Resistance = Voltage / Current) (resistance measured in ohms), where: Voltage [V] = the energy lost across an component (voltage measured in volts).Current [I] = the charge (electrons) flowing through an component (current measured in Amps) · The resistance value is displayed using the color code (the colored bars/the colored stripes), because the average resistor is too small to have the value printed on it with numbers. Symbol: Resistance measured in ohms, symbolized by the letter "R". Uses and functions: It oppose to the flow of electric current; ii

6. Variable Resistor: A kind of Resistor whose value can be changed by tuning the shaft in a electrical circuit. Symbol:

Uses and functions: Variable Resistors usually used to control current. Examples include: adjusting lamp brightness, adjusting motor speed, Volume control and adjusting the rate of flow of charge into a capacitor in a timing circuit. 7. Diode: A device which is use in electric circuit to allows an electric current to flow in single direction and block in the reverse direction.

Symbol: Uses and Function: The main function of a diode is to block the current in one direction, and allow current to flow in the other direction. Current flowing through the diode is called forward current. 8. Amplifier: A device which takes a weak electric signal and sends out a stronger one. Amplifiers are used to boost electrical signals in many electronic devices, including radios, televisions, and telephones

Symbol:

iii

Uses and Functions: Amplifiers are used in the following fields: · Military Integrated Assemblies · Frequency Converters · Switched Amplifiers · TTL-Controlled Functions · Amplifier Filter Assemblies · High-Density Packaging 9. LED (Light Emitting Diode): A device which is used in electric circuit to allow an electric current to flow in single direction and back it in the reverse direction.

Symbol: Uses and functions: Diodes allow electricity to flow in only one direction. The arrow of the circuit symbol shows the direction in which the current can flow. Diodes are the electrical version of a valve and early diodes were actually called valves.

10. LDR (Light dependent Resistor): A photoresistor or LDR is an electronic component whose resistance decreases with increasing incident light intensity. It can also be referred to as a light-dependent resistor (LDR), photoconductor, or photocell.

Or Symbol:

Uses and Function: ?

They are generally used in camera, light meters, clock radios, security alarms, street lights and outdoor clocks.

They are also used in some dynamic compressors together with a small incandescent lamp or light emitting diode to control gain reduction

11. Seven-Segment LED display –A display device which is common used in electronic circuit or equipment as decimal numeric display or indicator.

Symbol: Uses and Function: ?

Seven-segment displays are commonly used by school children to form words and phrases using a technique known as "calculator spelling".

They are also use an array of light-emitting diodes, Dot matrix.

12. Capacitor: A capacitor is an electrical/electronic device that can store energy in the electric field between a pair of conductors (called "plates"). The process of storing energy in the capacitor is known as "charging", and involves electric charges of equal magnitude, but opposite polarity, building up on each plate.

Symbol:

Uses and Functions: ·

Capacitors are often used in electrical circuit and electronic circuits as energy-storage devices.

· They can also be used to differentiate between high-frequency and low-frequency signals. This property makes them useful in electronic filters.

13. Capacitance: It is a measurement of the amount of charge (Q) stored on each plate for a given potential difference or voltage (V) which appears between the plates:

Symbol:

Uses and Functions: Measured the amount of charge store in capacitor

14. Motor: A device which coverts electrical energy to mechanical energy

Or Symbol: Uses and functions: It converts electrical energy to mechanical energy

15. Speaker: A device which converts electrical signals to sound.

Or Symbol: Uses And functions: It converts electrical signal to sound wave signal

16. Microphone: A device converts sound into an electrical or acoustic signal

Symbol: Uses and functions: 路

Production on sound recording

路

Track the caller or audio tune

17. Circuit: A system of interconnected all components/devices such as power source, resistors, capacitors and transistors...Etc Symbol: There is no any specific symbol for the electric circuit. It depends on the types of circuit and the components connect to it. Example: A simple electric circuit has one battery, switch and a lamp

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288+ Science Station

288+ Science Centre Introduction Connects to the circuit We take pleasure to welcome you to try out this ready-to-use electronic circuit kit suitable for children of 8 years old and up. “You’ll be amazed” to find what you can learn as the experiment is a realistic concept of electronics and electricity. It will definitely enable you to learn about the necessary electronic components, circuits, and theories as well as the basic electronics principles – electricity, voltage, current, resistance, magnetism, other electrical circuits and theories. It is alright if you have no knowledge about electronics and do not fully understand how all the experiments work. Once you get started you will be able to build your understanding through experimenting and maybe trying out some interesting experiments on your own. This electronic circuit kit contains more than 288 experiments, and it is smartly designed that the main circuit board unit has all the relevant electronic components included. All you have to do is simply connect the wires according to the wiring sequence of each experiment and follow the steps one by one. Once connected the circuit will activate and function. Remember this is not a one-time experiment. The more you spend on building the experiments the better knowledge you will gain. You will never get bored but totally engaged as you will discover more new exciting experiments for a few years to come.

Have a great electrifying experience !!! WARNING : Only for use by children aged 8 years and older

288+ EXPERIMENTS 1. Rotor (Flying Fan) 2. LED light 3. Rotor (Flying Fan) and LED 4. Red and green LED light 5. Basic circuitry of LED light 6. Diode and capacitor discharge 7. LED “AND Gate” circuit 8. LED “NAND Gate” circuit (with flying fan for extra excitement) 9. LED “NOR Gate” circuit (with flying fan for extra excitement) 10. LED “OR Gate” circuit 11. LED “NOT Gate” circuit ( with flying fan for extra excitement) 12. Timer electric fan 13. Time-delay fan 14. Sound control color filter 15. Touch control fan 16. Alternate working of LED light and electric fan 17. Speed-adjustable electric fan 18. Morse code training kit 19. Disconnect type alarm system (Dog barking sound) 20. Light control alarm system (Dog barking sound) 21. Flashing LED 22. Touch control dog barking sound 23. Darkness activated dog barking sound 24. Flashing Large LED 25. Manual control delayed dog barking sound 26. Magnet control delayed dog barking sound 27. Manual control rooster crowing sound with flashing LED 28. Manual control dog barking sound with flashing LED 29. Manual control horse neighing sound with flashing LED 30. Manual control bird chirping sound with flashing LED 31. Manual control cat meowing sound with flashing LED 32. Manual control sheep baaing sound with flashing LED 33. Manual control duck quacking sound with flashing LED 34. Manual control cuckoo calling sound with flashing LED 35. Manual control frog croaking sound with flashing LED 36. Switching between sheep baaing sound and cuckoo calling sound with flashing LED 37. Switching between bird chirping sound, rooster crowing sound and horse neighing sound with flashing LED 38. Digital segment LED displaying “F” 39. Magnet control digital segment LED switching between “1” and “8”

40. Manual control digital segment LED switching between “1” and “4” 41. Manual control digital segment LED switching between “1” and “0” 42. Manual control digital segment LED switching between “1” and “7” 43. Magnet control digital segment LED switching between “1” and “9” 44. Light control digital segment LED displaying “C” 45. Light control digital segment LED displaying “E dot” 46. Light control digital segment LED displaying “F” 47. Darkness activated digital segment LED displaying “H” 48. Darkness activated digital segment LED displaying “P” 49. Darkness activated digital segment LED displaying “U” 50. Darkness activated digital segment LED displaying “L” 51. Darkness activated digital segment LED displaying “S” 52. Manual control musical doorbell and flashing digital segment LED displaying “1” 53. Manual control musical doorbell and flashing digital segment LED displaying “2” 54. Manual control musical doorbell and flashing digital segment LED displaying “3” 55. Manual control musical doorbell and flashing digital segment LED displaying “4” 56. Manual control musical doorbell and flashing digital segment LED displaying “5” 57. Manual control musical doorbell and flashing digital segment LED displaying “6” 58. Manual control musical doorbell and flashing digital segment LED displaying “7” 59. Manual control musical doorbell and flashing digital segment LED displaying “8” 60. Manual control musical doorbell and flashing digital segment LED displaying “9” 61. Magnet control musical doorbell and flashing digital segment LED displaying “C” 62. Magnet control musical doorbell and flashing digital segment LED displaying “H” 63. Magnet control musical doorbell and flashing digital segment LED displaying “P” 64. Touch control musical doorbell and flashing digital segment LED displaying “C” P.1

65. Touch control musical doorbell and flashing digital segment LED displaying “H” 66. Touch control musical doorbell and flashing digital segment LED displaying “P” 67. Light control musical doorbell and flashing digital segment LED displaying “C” 68. Light control musical doorbell and flashing digital segment LED displaying “H” 69. Light control musical doorbell and flashing digital segment LED displaying “P” 70. Magnet control musical doorbell and LED 71. Touch control musical doorbell and LED 72. Manual control musical doorbell and LED with volume control 73. Manual control bell 74. Magnet control bell 75. Manual control bell and LED 76. LED and bell triggered by different switches 77. Double switch controlled LED 78. Manual control musical doorbell with meter 79. Magnet control musical doorbell with meter 80. Touch control musical doorbell with meter 81. Light control musical doorbell with meter 82. Manual control musical sound and flashing digital segment LED displaying “8” 83. Manual control musical sound with LED 84. Magnet control musical sound with LED 85. Tapping activated musical sound with LED 86. Touch control musical sound with LED 87. Light control musical sound with LED 88. Generator 89. Manual control musical sound with meter 90. Tapping activated musical sound with meter 91. Touch control musical sound with meter 92. Light control musical sound with meter 93. Magnet control musical sound with meter 94. Manual control musical sound from buzzer with LED 95. Touch control musical sound from buzzer with LED 96. Light control musical sound from buzzer with LED 97. Magnet control musical sound from buzzer with LED 98. Manual control meter and LED 99. Magnet control meter and LED 100. Light control meter and LED 101. Touch control meter and LED 102. Tapping activated meter and LED 103. Manual control rooster crowing sound 104. Magnet control rooster crowing sound 105. Touch control rooster crowing sound 106. Light control rooster crowing sound 107. Manual control rooster crowing sound with volume control 108. Manual control dog barking sound 109. Magnet control dog barking sound 110. Touch control dog barking sound 111. Light control dog barking sound 112. Manual control dog barking sound with volume control 113. Manual control horse neighing sound

114. 115. 116. 117. 118. 119. 120. 121. 122. 123. 124. 125. 126. 127. 128. 129. 130. 131. 132. 133. 134. 135. 136. 137. 138. 139. 140. 141. 142. 143. 144. 145. 146. 147. 148. 149. 150. 151. 152. 153. 154. 155. 156. 157. 158. 159. 160. 161. 162. 163. P.2

Magnet control horse neighing sound Touch control horse neighing sound Light control horse neighing sound Manual control horse neighing sound with volume control Manual control bird chirping sound Magnet control bird chirping sound Touch control bird chirping sound Light control bird chirping sound Manual control bird chirping sound with volume control Manual control cat meowing sound Magnet control cat meowing sound Touch control cat meowing sound Light control cat meowing sound Manual control cat meowing sound with volume control Manual control cuckoo calling sound Magnet control cuckoo calling sound Touch control cuckoo calling sound Light control cuckoo calling sound Manual control cuckoo calling sound with volume control Manual control sheep baaing sound Magnet control sheep baaing sound Touch control sheep baaing sound Light control sheep baaing sound Manual control sheep baaing sound with volume control Manual control duck quacking sound Magnet control duck quacking sound Touch control duck quacking sound Light control duck quacking sound Manual control duck quacking sound with volume control Manual control frog croaking sound Magnet control frog croaking sound Touch control frog croaking sound Light control frog croaking sound Manual control frog croaking sound with volume control Switching between frog croaking sound and bird chirping sound Series connection of resistors Parallel connection of resistors Function of Light Dependent Resistor (LDR) Function of variable resistor 0-3V voltmeter 0-6V voltmeter Discharging process of capacitor Charging process of capacitor Microphone tester Rain indicator Lux indicator Connection indicator Light control stop-and-spin electric fan Magnet control stop-and-spin electric fan Manual control stop-and- spin electric fan

164. 165. 166. 167. 168. 169. 170. 171. 172. 173. 174. 175. 176. 177. 178. 179. 180. 181. 182. 183. 184. 185. 186. 187. 188. 189. 190. 191. 192. 193. 194. 195. 196. 197. 198. 199. 200. 201. 202. 203. 204. 205. 206. 207. 208. 209. 210. 211. 212. 213. 214. 215. 216. 217. 218.

Light control extinguish-and-light LED Magnet control extinguish-and-light LED Manual control extinguish-and-light LED 6V LED Adjustable LED light Practical voltage adjustable circuitry Manual control delayed extinguishing large LED Magnet control delayed extinguishing large LED Touch control delayed extinguishing large LED Light control alarm system (Large LED) Darkness activated LED (Large LED) Light control extinguish-and-light super LED light Touch control bell sound with red LED Touch control motor dory sound with red LED Touch control ship sound with LED Magnet control bell sound with LED Magnet control motor dory sound with red LED Magnet control ship sound with LED Magnet control electronic metronome with LED Manual control electronic metronome with LED Manual control bell sound with LED Manual control motor dory sound with red LED Manual control ship sound with LED Manual control delayed motor dory sound Manual control metronome Delayed extinguishing flashing LED Multitone producer Magnet control multitone producer Manual control multitone producer Electronic cicada Ship sound Boresome humming Automobile’s “di, di” sound Hoofbeat Big voice AM radio receiver with volume control Magnet control AM radio receiver with volume control AM radio receiver with mute function Big voice FM radio receiver with volume control Magnet control FM radio receiver with volume control FM radio receiver with mute function Big voice AM/FM radio receiver with volume control Touch control FM radio receiver with volume control Daylight activated FM radio receiver with volume control Darkness activated FM radio receiver with volume control Simple microphone amplifier Rooster crowing sound and flashing LED with volume control Horse neighing sound and flashing LED with volume control Dog barking sound and flashing LED with volume control Bird chirping sound and flashing LED with volume control Cat meowing sound and flashing LED with volume control Cuckoo calling sound and flashing LED with volume control Sheep baaing sound and flashing LED with volume control Duck quacking sound and flashing LED with volume control Frog croaking sound and flashing LED with volume control Manual control musical doorbell and digital segment LED displaying “2”

219. Magnet control musical doorbell and digital segment LED displaying “2” 220. Touch control musical doorbell and digital segment LED displaying “2” 221. Light control musical doorbell and digital segment LED displaying “2” 222. Manual control rooster crowing sound and digital segment LED displaying “H” 223. Magnet control rooster crowing sound and digital segment LED displaying “H” 224. Touch control rooster crowing sound and digital segment LED displaying “H” 225. Light control rooster crowing sound and digital segment LED displaying “H” 226. Manual control dog barking sound and digital segment LED displaying “H” 227. Magnet control dog barking sound and digital segment LED displaying “H” 228. Touch control dog barking sound and digital segment LED displaying “H” 229. Light control dog barking sound and digital segment LED displaying “H” 230. Manual control bird chirping sound and digital segment LED displaying “P” 231. Magnet control bird chirping sound and digital segment LED displaying “P” 232. Touch control bird chirping sound and digital segment LED displaying “P” 233. Light control bird chirping sound and digital segment LED displaying “P” 234. Manual control cat meowing sound and digital segment LED displaying “I” 235. Magnet control cat meowing sound and digital segment LED displaying “I” 236. Touch control cat meowing sound and digital segment LED displaying “I” 237. Light control cat meowing sound and digital segment LED displaying “I” 238. Manual control cuckoo calling sound and digital segment LED displaying “P” 239. Magnet control cuckoo calling sound and digital segment LED displaying “P” 240. Touch control cuckoo calling sound and digital segment LED displaying “P” 241. Light control cuckoo calling sound and digital segment LED displaying “P” 242. Manual control sheep baaing sound and digital segment LED displaying “P” 243. Magnet control sheep baaing sound and digital segment LED displaying “P” 244. Touch control sheep baaing sound and digital segment LED displaying “P” 245. Light control sheep baaing sound and digital segment LED displaying “P” 246. Manual control duck quacking sound and digital segment LED displaying “L” 247. Magnet control duck quacking sound and digital segment LED displaying “L” P.3

271. Manual control horse neighing sound with flashing LED plus magnet control musical doorbell with LED and master volume control 272. Manual control horse neighing sound with flashing LED plus touch control musical doorbell with LED and master volume control 273. Manual control horse neighing sound with flashing LED plus light control musical doorbell with LED and master volume control 274. Manual control bird chirping sound with flashing LED plus manual control musical doorbell with LED and master volume control 275. Manual control bird chirping sound with flashing LED plus magnet control musical doorbell with LED and master volume control 276. Manual control bird chirping sound with flashing LED plus touch control musical doorbell with LED and master volume control 277. Manual control bird chirping sound with flashing LED plus light contorl musical doorbell with LED and master volume control 278. Manual control cat meowing sound with flashing LED plus manual control musical doorbell with LED and master volume control 279. Manual control cat meowing sound with flashing LED plus magnet control musical doorbell with LED and master volume control 280. Manual control cat meowing sound with flashing LED plus touch control musical doorbell with LED and master volume control 281. Manual control cat meowing sound with flashing LED plus light contorl musical doorbell with LED and master volume control 282. Manual control cuckoo calling sound with flashing LED plus manual control musical doorbell with LED and master volume control 283. Manual control cuckoo calling sound with flashing LED plus magnet control musical doorbell with LED and master volume control 284. Manual control cuckoo calling sound with flashing LED plus touch control musical doorbell with LED and master volume control 285. Manual control cuckoo calling sound with flashing LED plus light control musical doorbell with LED and master volume control 286. Manual control sheep baaing sound with flashing LED plus manual control musical doorbell with LED and master volume control 287. Manual control sheep baaing sound with flashing LED plus magnet control musical doorbell with LED and master volume control 288. Manual control sheep baaing sound with flashing LED plus touch control musical doorbell with LED and master volume control 289. Manual control sheep baaing sound with flashing LED plus light control musical doorbell with LED and master volume control

248. Touch control duck quacking sound and digital segment LED displaying “L” 249. Light control duck quacking sound and digital segment LED displaying “L” 250. Manual control horse neighing sound and digital segment LED displaying “L” 251. Magnet control horse neighing sound and digital segment LED displaying “L” 252. Touch control horse neighing sound and digital segment LED displaying “L” 253. Light control horse neighing sound and digital segment LED displaying “L” 254. Manual control frog croaking sound and digital segment LED displaying “U” 255. Magnet control frog croaking sound and digital segment LED displaying “U” 256. Touch control frog croaking sound and digital segment LED displaying “U” 257. Light control frog croaking sound and digital segment LED displaying “U” 258. Manual control frog croaking sound with flashing LED plus manual contorl musical doorbell with LED and master volume control 259. Manual control frog croaking sound with flashing LED plus magnet contorl musical doorbell with LED and master volume control 260. Manual control frog croaking sound with flashing LED plus touch control musical doorbell with LED and master volume control 261. Manual control frog croaking sound with flashing LED plus light control musical doorbell with LED and master volume control 262. Manual control rooster crowing sound with flashing LED plus manual contorl musical doorbell with LED and master volume control 263. Manual control rooster crowing sound with flashing LED plus magnet contorl musical doorbell with LED and master volume control 264. Manual control rooster crowing sound with flashing LED plus touch control musical doorbell with LED and master volume control 265. Manual control rooster crowing sound with flashing LED plus light control musical doorbell with LED and master volume control 266. Manual control dog barking sound with flashing LED plus manual contorl musical doorbell with LED and master volume control 267. Manual control dog barking sound with flashing LED plus magnet contorl musical doorbell with LED and master volume control 268. Manual control dog barking sound with flashing LED plus touch control musical doorbell with LED and master volume control 269. Manual control dog barking sound with flashing LED plus light control musical doorbell with LED and master volume control 270. Manual control horse neighing sound with flashing LED plus manual contorl musical doorbell with LED and master volume control P.4

COMPONENTS IN THIS KIT

Description 288 in 1 Circuit Board Unit Magnetic pole Connecting wire Instruction Manual

Quantity 1pc 1pc 1 0 c m x1 2 p cs, 20 c m x1 2 p cs , 30 cm x1 0 p c s, 40 c m x8 p cs 1pc

WARNING

Adult supervision and assistance is required. This unit is only for use by children aged 8 years and older. Not suitable for children under age 3 years old due to small part(s) and component(s) â&#x20AC;&#x201C; CHOKING HAZARD. Read and follow all instructions in the manual before use. This toy contains small parts and functional sharp points on components. Keep away from children under age 3 years. 4 x 1.5V AA (LR6) size batteries are required (not included) Please retain the information and this manual for future reference. Instructions for parents are included and have to be observed. This toy contains magnets or magnetic components. Magnets sticking together or becoming attached to a metallic object inside the human body can cause serious or fatal injury. Seek immediate medical help if magnets are swallowed or inhaled. CAUTION !

Before setting up any experiment, please double check and make sure all wiring connections you have made are correct before inserting the batteries and switching on the unit as failure may result in damage to components or circuit board unit. When experiment is finished, make sure the batteries are disconnected and switch off the unit before you clear away the wires. Do not apply any components or parts to the experiment other than those provided with this kit. If this product malfunctions or "locks up", try switching off and back on again or removing and re-inserting batteries. Do not lock the motor or other moving parts. Otherwise it may cause overheating. BATTERY INFORMATON

WIRING SEQUENCE AND CONNECTION

Use 4 x 1.5V AA (LR6) size batteries (not included) For best performance, always use fresh batteries and remove batteries when not in use Batteries must be inserted with the correct polarity Do not use rechargeable batteries Non-rechargeable batteries are not to be recharged Re-chargeable batteries are only to be charged under adult supervision Re-chargeable batteries are to be removed from the toy before being charged Different types of batteries or new and used batteries are not to be mixed. Exhausted batteries are to be removed from the toy The supply terminals are not to be short-circuited Only batteries of the same or equivalent types are to be used Do not dispose of the batteries in fire Do not mix old and new batteries Do not mix alkaline, carbon zinc and re-chargeable batteries

Ensure all wires are correctly connected to the numbered spring terminals of the main circuit board unit as stated wiring sequence of each experiment. Bend the spring terminal over and inser t the exposed shiny conductor part of wire into spring terminal. Make sure the wire is securely connected to spring terminal. For example if the wiring sequence is 4-33, 1-10-32-35, 2-12, then connect a wire between spring terminal 4 and 33; and then connect a wire between spring terminal 1 and 10, and a wire between spring terminal 10 and 32, and a wire between spring terminal 32 and 35; and finally connect a wire between spring terminal 2 and 12. This is an example for reference only, not an exact circuit connection in the experiment. If the circuit does not work, you can check the wire and spring ter minal connection whether it is not well connected or insulated plastic part of the wire is inserted to spring terminal.

P.5

Objective : The overall aim for this electronic circuit kit is for you to get a better understanding of how connecting different wiring sequence will make different science experiments. Each experiment is targeted at different basic concept of electronics & electricity. Please make sure to read carefully and all wires are correctly connected in the indicated diagram in order to have each experiment worked. Note : Remember to untie the string which ties the flying disc/color filter ( if available ) to the motor before starting the experiment. When the motor is rotating, do not use any object to touch the mot.or Do not aim the fan at eyes or face. Do not aim the fan at people or animals.

EXPERIMENT Wiring Sequence

•

Wiring Sequence

Red and green LED light

8-98, 97-96-94, 50-95-93, 7-51

Complete all wiring connections as indicated in the sequence. By switching ON, both red LED and green LED will light up. By switching OFF, both LED will extinguish.

EXPERIMENT Wiring Sequence

Basic circuitry of LED light

7-89-97, 90-93-98-66, 50-65-94, 8-51

Complete all wiring connections as indicated in the sequence. Switch on the main switch. You will see that small red LED will light up but large red LED will not light up. When you press the push switch, you will see the large red LED will light up but small red LED will be turned off.

EXPERIMENT Wiring Sequence

Diode and capacitor discharge

8-50, 51-97-24, 23-34-66, 65-90, 7-93-33-89, 94-98

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Small red LED will light up. Current flows from the diode will charge the capacitor at the same time. When you press the push switch, the large red LED will light up. Release the push switch so that large red LED will be turned off. Now switch off the main switch. The small red LED will extinguish. However if you press the push switch at this time, the large red LED will light up for a brief moment! This is due to the release of the stored electrical charge of the capacitor.

EXPERIMENT Wiring Sequence

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Rotor (Flying Fan) and LED

Switch on the main switch. The fan will spin and LED will light up very dimly. When you switch off the main switch, the LED will extinguish and the fan will fly up from the motor. If you take away the fan first and repeat the experiment again, you will notice that this time the LED will light up brightly!

Wiring Sequence

•

6-8-98, 5-50-93, 97-94, 51-7

EXPERIMENT

•

LED light

Complete all wiring connections as indicated in the sequence. By switching ON, the LED will light up. By switching OFF, the LED will extinguish.

Wiring Sequence

•

8-90, 50-89, 7-51

EXPERIMENT

•

Rotor (Flying Fan)

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then you can see the fan spinning. After a few seconds, when you switch off the main switch, the fan will fly up from the motor !

EXPERIMENT

•

8-6, 5-50, 51-7

LED “AND Gate” circuit

6-8, 5-98, 97-94, 93-50, 65-51, 66-7

Complete all wiring connections as indicated in the sequence. If you only switch on the main switch, or only press the push switch, the LED will not light up. If you switch on the main switch AND press the push switch together, then LED will light up. This is known as “AND Gate”. Both switches have to be switched on in order to activate the LED. P.6

A 0 1 0 1

A AND B = C BC 00 00 10 11

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. LED will automatically light up. LED will be turned off only when both push switch and main switch are switched on. This is called “NAND gate”. “NAND gate” is the exact opposite of “AND gate”. As an extra fun element, the fan will spin when the LED is off! After a few seconds, when you have the LED switched on again, the fan will fly up from the motor!

EXPERIMENT Wiring Sequence

•

A OR B = C B C 0 0 0 1 1 1 1 1

8-6, 5-97-51, 98-94, 7-93-50

EXPERIMENT

A 1 0

NOT A = B B 0 1

Timer electric fan

8-66-42, 41-46, 104-44, 32-65-103, 31-50-45-5, 7-51, 6-43

Complete all wiring connections as indicated in the sequence. By switching ON and pressing the push switch, the fan will spin. At the same time, the capacitor will be charged. When the push switch is released, the circuit is disconnected, but the fan will still keep on spinning for a while. This is because the capacitor will discharge and release its stored electricity, thus the fan will still spin for a while.

EXPERIMENT Wiring Sequence

•

A 0 1 0 1

LED “NOT Gate” circuit (with flying fan for extra excitement)

Complete all wiring connections as indicated in the sequence. LED will automatically light up even though the main switch is off. When you switch on the main switch, LED will turn off. For the LED, this is known as “NOT Gate” - LED lights up when the switch is off. LED is off when switch is on. As an extra fun element, the fan will spin when the LED is off! After a few seconds, when you have the LED switched on again, the fan will fly up from the motor!

Wiring Sequence

A NOR B = C B C 0 1 0 0 1 0 1 0

LED “OR Gate” circuit

Complete all wiring connections as indicated in the sequence. To light up the LED, you can either press the push switch OR switch on the main switch. This is known as “OR Gate”. Switching on either switch OR switching on both switches will activate the LED.

Wiring Sequence

A 0 1 0 1

8-66-51, 6-65-50, 5-97, 98-94, 7-93

EXPERIMENT

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LED “NOR Gate” circuit (with flying fan for extra excitement)

Complete all wiring connections as indicated in the sequence. LED will automatically light up. When both the main switch and push switch are off, then LED will light up. When the main switch or push switch is/are on, LED will be off. This is known as “NOR Gate”. “NOR Gate” is the exact opposite of “OR Gate”. As an extra fun element, the fan will spin when the LED is off! After a few seconds, when you have the LED switched on again, the fan will fly up from the motor!

Wiring Sequence

•

A NAND B = C B C 01 01 11 10

A 0 1 0 1

8-6, 5-97-66-51, 98-94, 7-93-65-50

EXPERIMENT

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LED “NAND Gate” circuit (with flying fan for extra excitement)

8-6, 97-94, 5-98-66, 65-51, 7-93-50

Time-delay electric fan

8-106-42, 18-105, 41-46, 17-44, 32-16, 31-50-45-5, 7-51, 6-43

Complete all wiring connections as indicated in the sequence. After switching ON for a time period, the fan will start to spin. This delay is due to the charging of the capacitor. During the charging, the base electrode of the triode is in a low voltage so that the triode is shut. When the capacitor is charged fully, the triode is in its conducting condition, thus the fan will spin. The time-delay period is the duration of the charging. NOTE: Every time when you perform this experiment once, remember to “discharge” the capacitor before doing it again. Otherwise it won’t work properly. To “discharge”, connect any wire to 31-32 for a second. This way the electricity stored in the capacitor will be “discharged” and then the experiment can work properly again. P.7

EXPERIMENT Wiring Sequence

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Sound control color filter

7-51, 100-98-49-20-8, 97-18, 103-44-19, 99-46-24, 47-23-17, 48-6, 104-50-45-16-5

Complete all wiring connections as indicated in the sequence. Adjust the variable resistor to the minimum value. Then switch on the main switch. Step by step, adjust the variable resistor slowly and try to blow to the microphone. You will find a point which the color filter will only be triggered by your blowing to spin. This is the desired setting for this experiment. Now you can clap loudly near the microphone, or make a deep blow to the microphone, or get close to the microphone and speak loudly towards it to trigger the color filter to spin. WARNING: Do not let the color filter keep on spinning non-stop, as color filter keeps on spinning may cause components overheated in this experiment. So remember to switch off the main switch to stop the color filter.

EXPERIMENT Wiring Sequence

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Wiring Sequence

Speed-adjustable electric fan

8-98-42, 18-97, 41-46, 17-44, 16-50-5, 7-51, 6-43-45

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Adjust the variable resistor slowly. This will change the control voltage of the triode. Thus the spinning speed of the fan will change. Utilizing this principle can get a speed-adjustable electric fan.

EXPERIMENT Wiring Sequence

18 Morse code training kit

8-97, 96-98, 65-95, 7-66

Complete all wiring connections as indicated in the sequence. By tapping the push switch, LED will flash. This is equivalent to the principle of Morse-Code. By learning the Morse-Code table, it is possible to send a message out at night.

EXPERIMENT Wiring Sequence

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Alternate working of LED light and electric fan

Complete all wiring connections as indicated in the sequence. Switch on the main switch and adjust the variable resistor slowly to a suitable position. LED and electric fan will work alternately. The frequency of the alternation can be changed according to the adjusting of the variable resistor. Adjusting the variable resistor to its maximum, the electric fan will spin and LED will extinguish. Adjusting the variable resistor to its minimum, the electric fan will stop and LED will light up.

Wiring Sequence

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23-94, 8-24-97-42, 16-98, 41-46, 17-34-44, 50-45-18-5, 7-51, 6-43-93-33

EXPERIMENT

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Touch control fan

Complete all wiring connections as indicated in the sequence. Switch on the main switch and touch the touching-plate with your finger. The circuit will be connected and the fan will begin to spin. If touching the touching-plate does not show anything, dampen your finger with water before touching will make it works. And remember to wipe the water off the touch plate after you remove your finger from it.

EXPERIMENT

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8-42-53, 41-46, 52-44, 50-45-5, 7-51, 6-43

Disconnect type alarm system (Dog barking sound)

8-106-42, 44-65-105, 46-41, 76-75-45-43-3, 7-66-77, 4-78

Complete all wiring connections as indicated in the sequence and press the push switch without releasing it. Nothing happens. Release the push switch. The speaker will make dog barking sound as the circuit is disconnected. This circuit can be used as an alarm system. For example, when a locked door or window is shut, this is just like the push switch being pressed. Then nothing happens. However when the door or window is broken open, this is like the push switch is being released. Dog barking sound will be made as alarm signal, indicating the existence of an intruder! P.8

EXPERIMENT Wiring Sequence

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Complete all wiring connections as indicated in the sequence and shaded the LDR completely. Nothing happens. Remove the cover thing. There is light falling on the LDR and thus the speaker will make dog barking sound. This circuit can be used as a light-control alarm system. For example, when a box containing important possession is closed, nothing happens. When the box is broken open, light will fall on the sensor inside the box (LDR in this case) and so the dog barking sound will be produced as warning signal, indicating the box is opened by someone!

Wiring Sequence

Darkness activated dog barking sound

8-50, 51-106-42, 44-36-105, 46-41, 76-75-45-43-3, 7-77-35, 4-78

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Nothing happens since there is light falling on the LDR. When the LDR is shaded completely, the dog barking sound will come out from the speaker. This circuit can be used as darkness activated alarm system.

Wiring Sequence

Flashing Large LED

8-51, 50-75-90, 89-78, 7-77

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then the large LED will flash.

EXPERIMENT Wiring Sequence

Manual control delayed dog barking sound

8-50, 103-51-42, 105-65-44-34, 46-41, 76-75-45-43-3, 7-33-77-106, 4-78, 66-104

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then press the push switch without releasing it. After some time, the speaker will make dog barking sound. And then after releasing the push switch, the dog barking sound will still persist for a while. This delay of time period is due to the charging and discharging of the capacitor.

EXPERIMENT Wiring Sequence

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Touch control dog barking sound

8-50, 53-51-42, 44-52-106, 46-41, 76-75-45-43-3, 7-77-105, 4-78

EXPERIMENT

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Complete all wiring connections as indicated in the sequence. Switch on the main switch and touch the touch plate. You can hear dog barking sound coming from the speaker. If it doesn’t work, dampen your finger with water and try again. Then the circuit will be connected easily and the speaker will work.

EXPERIMENT

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Flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then LED will flash.

Wiring Sequence

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8-51, 50-75-94, 93-78, 7-77

EXPERIMENT

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Light control alarm system (Dog barking sound)

8-36-42, 44-35-106, 46-41, 76-75-45-43-3, 7-77-105, 4-78

EXPERIMENT

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Magnet control delayed dog barking sound

8-50, 103-51-42, 105-67-44-34, 46-41, 76-75-45-43-3, 7-33-77-106, 4-78, 68-104

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then access the reed switch with the magnetic pole without moving away from it. After some time, the speaker will make dog barking sound. And then after removing the magnetic pole, the dog barking sound will still persist for a while. This delay of time period is due to the charging and discharging of the capacitor. P.9

EXPERIMENT Wiring Sequence

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Wiring Sequence

Manual control bird chirping sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce bird chirping sound and the LED will flash at a frequency which coordinates with the rhythm of the bird chirping sound.

Wiring Sequence

Manual control cat meowing sound with flashing LED

8-51, 50-74-94-3, 93-78-4, 7-77

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce cat meowing sound and the LED will flash at a frequency which coordinates with the rhythm of the cat meowing sound.

EXPERIMENT Wiring Sequence

Manual control sheep baaing sound with flashing LED

8-51, 50-94-3, 93-78-76-4, 7-77

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce sheep baaing sound and the LED will flash at a frequency which coordinates with the rhythm of the sheep baaing sound.

EXPERIMENT Wiring Sequence

Manual control duck quacking sound with flashing LED

8-51, 50-75-94-3, 93-78-76-4, 7-77

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce duck quacking sound and the LED will flash at a frequency which coordinates with the rhythm of the duck quacking sound.

EXPERIMENT Wiring Sequence

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8-51, 50-75-94-3, 93-78-4, 7-77-74

EXPERIMENT

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Manual control horse neighing sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce horse neighing sound and the LED will flash at a frequency which coordinates with the rhythm of the horse neighing sound.

Wiring Sequence

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8-51, 50-75-74-94-3, 93-78-4, 7-77

EXPERIMENT

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Manual control dog barking sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce dog barking sound and the LED will flash at a frequency which coordinates with the rhythm of the dog barking sound.

Wiring Sequence

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8-51, 50-75-76-94-3, 93-78-4, 7-77

EXPERIMENT

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Manual control rooster crowing sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce rooster crowing sound and the LED will flash at a frequency which coordinates with the rhythm of the rooster crowing sound.

EXPERIMENT

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8-51, 50-75-94-3 93-78-4, 7-77

Manual control cuckoo calling sound with flashing LED

8-51, 50-94-3, 93-78-76-4, 7-77-74

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce cuckoo calling sound and the LED will flash at a frequency which coordinates with the rhythm of the cuckoo calling sound.

P.10

EXPERIMENT Wiring Sequence

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Wiring Sequence

Digital segment LED displaying “F”

8-51, 50-55, 7-97, 98-54-56-57-59

Complete all wiring connections as indicated in the sequence. By switching ON, the digital segment LED will display “F”.

EXPERIMENT

Wiring Sequence

Magnet control digital segment LED switching between “1” and “8”

8-55, 67-54-56-57-59-61, 7-97, 98-58-62-68

Complete all wiring connections as indicated in the sequence. The digital segment will display 1. Access the reed switch with the magnetic pole. Then the display of the digital segment will change to “8”.

EXPERIMENT

Wiring Sequence

Manual control digital segment LED switching between “1” and “4”

8-55, 51-54-57, 7-97, 98-58-62-50

Complete all wiring connections as indicated in the sequence. The digital segment LED will display “1”. Switch on the main switch. Then the digital segment LED will display “4”.

EXPERIMENT

Wiring Sequence

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Switching between bird chirping sound, rooster crowing sound and horse neighing sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce bird chirping sound, rooster crowing sound and horse neighing sound, depends on the initial value of the variable resistor. At the same time LED will flash to the rhythm of the animal sound. Then adjust the variable resistor to change the sound. When the variable resistor is adjusted to its maximum value, the speaker will produce bird chirping sound. When the variable resistor is at its medium value, the speaker will produce rooster crowing sound. When the variable resistor is at its minimum value, the speaker will produce horse neighing sound. And the flashing of LED will change accordingly.

Wiring Sequence

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8-51, 50-75-16-94-3, 93-78-4, 7-77-18, 74-17

EXPERIMENT

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Switching between sheep baaing sound and cuckoo calling sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce either sheep baaing sound or cuckoo calling sound, depends on the initial value of the variable resistor. At the same time LED will flash to the rhythm of the animal sound. Then adjust the variable resistor to the other side. The speaker will switch to another animal sound, and flashing of LED will change accordingly.

Wiring Sequence

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8-51, 50-94-3, 93-78-76-4, 7-17-77, 16-74

EXPERIMENT

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Manual control frog croaking sound with flashing LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce frog croaking sound and the LED will flash at a frequency which coordinates with the rhythm of the frog croaking sound.

EXPERIMENT

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8-51, 50-75-94-3, 93-78-4, 7-77, 74-76

Manual control digital segment LED switching between “1” and “0”

8-55, 51-54-56-59-61, 7-97, 98-58-62-50

Complete all wiring connections as indicated in the sequence. The digital segment LED will display “1”. Switch on the main switch. Then the digital segment LED will display “0”. P.11

EXPERIMENT

Wiring Sequence

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Complete all wiring connections as indicated in the sequence. The digital segment LED will display “1”. Switch on the main switch. Then the digital segment LED will display “7”.

Wiring Sequence

Magnet control digital segment LED switching between “1” and “9”

8-55, 67-54-56-57-61, 7-97, 98-58-62-68

Complete all wiring connections as indicated in the sequence. The digital segment LED will display “1”. Access the reed switch with the magnetic pole. Then the digital segment LED will display “9”.

EXPERIMENT Wiring Sequence

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Manual control digital segment LED switching between “1” and “7”

8-55, 51-56, 7-97, 98-58-62-50

EXPERIMENT

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Light control digital segment LED displaying “C”

8-98-36, 97-55, 46-54-56-59-61, 105-50-45, 7-51, 106-35-44

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If the LDR is covered completely, the digital segment LED will display nothing. When the LDR is uncovered, the digital segment LED will display “C”.

EXPERIMENT

Wiring Sequence

8-36-98, 97-55, 46-54-56-57-59-60-61, 105-50-45, 7-51, 106-35-44

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If the LDR is covered completely, the digital segment LED will not display anything. When the LDR is uncovered, the digital segment LED will display “E” with a dot.

EXPERIMENT Wiring Sequence

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Darkness activated digital segmentLED displaying “H”

8-98-106, 97-55, 46-54-57-58-59-62, 35-45-50, 7-51, 105-36-44

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The digital segment LED will display nothing as there is light shining on the LDR. When the LDR is covered, the digital segment LED will display “H”.

EXPERIMENT Wiring Sequence

Darkness activated digital segment LED displaying “P”

8-98-106, 97-55, 46-54-56-57-58-59, 35-45-50, 7-51, 105-36-44

EXPERIMENT Wiring Sequence

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Light control digital segment LED displaying “F”

Wiring Sequence

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8-36-98, 97-55, 46-54-56-57-59, 105-50-45, 7-51, 106-35-44

EXPERIMENT

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Light control digital segment LED displaying “E dot”

Darkness activated digital segment LED displaying “U”

8-98-106, 97-55, 46-54-58-59-61-62, 35-45-50, 7-51, 105-36-44

P.12

EXPERIMENT

Wiring Sequence

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Darkness activated digital segment LED displaying “L”

8-98-106, 97-55, 46-54-59-61, 35-45-50, 7-51, 105-36-44

EXPERIMENT

Wiring Sequence

8-98-106, 97-55, 46-54-56-57-61-62, 35-45-50, 7-51, 105-36-44

•

EXPERIMENT

Wiring Sequence

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Manual control musical doorbell and flashing digital segment LED displaying “2”

3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-61-59-57-56-58

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “2” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “2”. There are a total of 7 doorbell music available.

EXPERIMENT

Wiring Sequence

Manual control musical doorbell and flashing digital segment LED displaying “3”

3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-62-61-57-56-58

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “3” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “3”. There are a total of 7 doorbell music available.

EXPERIMENT

Wiring Sequence

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Manual control musical doorbell and flashing digital segment LED displaying “1”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “1” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “1”. There are a total of 7 doorbell music available.

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 79-58-62, 50-83

EXPERIMENT

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Darkness activated digital segment LED displaying “S”

Manual control musical doorbell and flashing digital segment LED displaying “4”

3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-57-54-58-62

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “4” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “4”. There are a total of 7 doorbell music available. P.13

EXPERIMENT

56 Manual control musical doorbell and flashing digital segment LED displaying “5”

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-61-54-56-57-62

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “5” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “5”. There are a total of 7 doorbell music available.

EXPERIMENT

57 Manual control musical doorbell and flashing digital segment LED displaying “6”

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-61-59-54-56-57-62

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “6” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “6”. There are a total of 7 doorbell music available.

EXPERIMENT

58 Manual control musical doorbell and flashing digital segment LED displaying “7”

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-58-56-62

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “7” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “7”. There are a total of 7 doorbell music available.

EXPERIMENT

59 Manual control musical doorbell and flashing digital segment LED displaying “8”

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-61-59-57-54-56-5

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “8” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “8”. There are a total of 7 doorbell music available.

EXPERIMENT

60 Manual control musical doorbell and flashing digital segment LED displaying “9”

Wiring Sequence

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3-8-55-66-80, 65-82, 4-81, 7-51, 50-83, 79-61-57-54-56-58-62

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “9” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “9”. There are a total of 7 doorbell music available.

P.14

EXPERIMENT

Wiring Sequence

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Wiring Sequence

Magnet control musical doorbell and flashing digital segment LED displaying “H”

3-8-55-67-80, 82-68, 4-81, 7-51, 50-83, 79-62-59-58-54-57

Magnet control musical doorbell and flashing digital segment LED displaying “P”

3-8-55-67-80, 82-68, 4-81, 7-51, 50-83, 79-59-58-57-56-54

Touch control musical doorbell and flashing digital segment LED displaying “C”

3-8-52-55-80, 82-53, 4-81 7-51, 50-83, 79-61-59-56-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “C” and flash to the rhythm of the musical doorbell. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “C”. There are a total of 7 doorbell music available.

EXPERIMENT

Wiring Sequence

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Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “P” and flash to the rhythm of the musical doorbell. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “P”. There are a total of 7 doorbell music available.

EXPERIMENT

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3-8-55-67-80, 82-68, 4-81, 7-51, 50-83, 79-61-59-56-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “H” and flash to the rhythm of the musical doorbell. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “H”. There are a total of 7 doorbell music available.

EXPERIMENT

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Magnet control musical doorbell and flashing digital segment LED displaying “C”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “C” and flash to the rhythm of the musical doorbell. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “C”. There are a total of 7 doorbell music available.

EXPERIMENT

•

Touch control musical doorbell and flashing digital segment LED displaying “H”

3-8-52-55-80, 82-53, 4-81, 7-51, 50-83, 79-62-59-58-54-57

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “H” and flash to the rhythm of the musical doorbell. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “H”. There are a total of 7 doorbell music available. P.15

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

Light control musical doorbell and flashing digital segment LED displaying “C”

3-8-36-55-80, 82-35, 4-81, 7-51, 50-83, 79-61-59-56-54

Light control musical doorbell and flashing digital segment LED displaying “H”

3-8-36-55-80, 82-35, 79-62-59-58-54-57, 4-81, 7-51, 50-83

Light control musical doorbell and flashing digital segment LED displaying “P”

3-8-36-55-80, 82-35, 4-81, 7-51, 50-83, 79-59-58-57-56-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “P” and flash to the rhythm of the musical doorbell. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “P”. There are a total of 7 doorbell music available.

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “H” and flash to the rhythm of the musical doorbell. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “H”. There are a total of 7 doorbell music available.

EXPERIMENT

•

3-8-52-55-80, 82-53, 4-81, 7-51, 50-83, 79-59-58-57-56-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “C” and flash to the rhythm of the musical doorbell. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “C”. There are a total of 7 doorbell music available.

EXPERIMENT

•

Touch control musical doorbell and flashing digital segment LED displaying “P”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “P” and flash to the rhythm of the musical doorbell. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music with flashing digital segment displaying “P”. There are a total of 7 doorbell music available.

EXPERIMENT

•

Magnet control musical doorbell and LED

8-50, 98-94-80-68-51-42, 7-83-3, 67-82, 4-43, 97-81-41, 79-93

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell sound from the speaker, and LED will light up. When the music is finished, you can use the magnetic pole to access the reed switch again. Then the IC will be triggered again and play the next doorbell music. There are a total of 7 doorbell music available.

P.16

EXPERIMENT Wiring Sequence

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71 Touch control musical doorbell and LED 8-50, 98-94-80-52-51-42, 7-83-3, 53-82, 4-43, 97-81-41, 79-93

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell sound from the speaker, and LED will light up. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music. There are a total of 7 doorbell music available.

EXPERIMENT

72 Manual control musical doorbell and LED with volume control

Wiring Sequence

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Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell sound from the speaker, and LED will light up. Volume can be adjusted by adjusting the variable resistor. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music. There are a total of 7 doorbell music available.

EXPERIMENT Wiring Sequence

•

73 Manual control bell 8-6, 5-50, 7-51

Complete all wiring connections as indicated in the sequence. Make sure the spring rod is installed onto the motor. Then switch on the main switch. The bell will ring since the motor with the spring rod rotates and the spring rod hits the bell.

EXPERIMENT Wiring Sequence

•

8-50, 51-65-80-84-94, 7-83-87-3, 85-16, 66-82, 17-86, 93-81-18, 4-88

74 Magnet control bell 8-42-104, 103-68, 41-46, 105-67-44, 106-50-45-5, 7-51, 6-23, 43-24

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use the magnetic pole to access the reed switch. And then the circuit is connected. The bell will ring since the motor with the spring rod rotates and the spring rod hits the bell.

EXPERIMENT Wiring Sequence

•

Wiring Sequence

76 LED and bell triggered by different switches 8-51-68-66, 6-50, 65-96, 94-67, 97-93-95, 5-7-98

Complete all wiring connections as indicated in the sequence. Make sure the spring rod is installed onto the motor. If you switch on the main switch, the bell will ring since the motor with the spring rod rotates and the spring rod hits the bell. If you access the reed switch with the magnetic pole, then red LED will light up. If you access the reed switch with the magnetic pole, then green LED will light up.

EXPERIMENT Wiring Sequence

•

6-8-97, 95-50-5, 7-51, 98-96

EXPERIMENT

•

75 Manual control bell and LED

77 Double switch controlled LED 8-65-50, 66-100, 47-99, 51-49, 90-48, 7-89

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Nothing happens. And then press the push switch, the LED will light up. Even though the push switch is released, the LED will still continue to glow. If you want to switch on the LED, you will have to switch off the main switch. P.17

EXPERIMENT

78 Manual control musical doorbell with meter

Wiring Sequence

8-50, 51-66-80-101-4, 7-83, 3-81, 65-82, 1-79, 2-102

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music. The pointer of the meter will also oscillate to the rhythm of the musical doorbell as before.

EXPERIMENT

79 Magnet control musical doorbell with meter

Wiring Sequence

8-50, 51-80-67-101-4, 7-83, 3-81, 68-82, 1-79, 2-102

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the musical doorbell. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the next doorbell music. The pointer of the meter will also oscillate to the rhythm of the musical doorbell as before.

EXPERIMENT

80 Touch control musical doorbell with meter

Wiring Sequence

82-53, 8-50, 51-80-101-52-4, 7-83, 3-81, 1-79, 2-102

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the musical doorbell. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music. The pointer of the meter will also oscillate to the rhythm of the musical doorbell as before.

EXPERIMENT Wiring Sequence

•

81 Light control musical doorbell with meter

35-82, 8-50, 51-80-101-36-4, 7-83, 3-81, 1-79, 2-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical doorbell from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the musical doorbell. When the music is finished, you can cover and then uncover the LDR again. Then the IC will be triggered again and play the next doorbell music. The pointer of the meter will also oscillate to the rhythm of the musical doorbell as before.

EXPERIMENT

82 Manual control musical sound

and flashing digital segment LED displaying “8”

8-51, 50-66-70, 69-54-56-57-58-59-61-62-3, 73-55-4, 7-72, 65-71

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical sound from the speaker. At the same time the digital segment LED will display “8” and flash to the rhythm of the musical doorbell. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next musical doorbell with flashing digital segment displaying “8”. There are a total of 7 doorbell music available.

EXPERIMENT Wiring Sequence

•

83 Manual control musical sound with LED

8-51, 50-66-70, 94-69-3, 93-73-4, 7-72, 65-71

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical sound from the speaker, and LED will light up. When the music is finished, you can press the push switch again. Then the IC will be triggered and play the music again. P.18

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical sound from the speaker, and LED will light up. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered and play the music again.

Wiring Sequence

Light control musical sound with LED

8-51, 50-36-70, 69-94-3, 93-73-4, 7-72, 35-71

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical sound from the speaker, and LED will light up. When the music is finished, you can cover and then uncover the LDR again. Then the IC will be triggered and play the music again.

EXPERIMENT Wiring Sequence

Generator

1-5, 2-6

Complete all wiring connections as indicated in the sequence. Try winding the motor. You can see the meter’s pointer moves. This means there is current in the circuit. In this experiment, the motor is used as a generator to generate electricity.

EXPERIMENT Wiring Sequence

Manual control musical sound with meter

8-51, 50-66-70, 69-2-3, 73-1-4, 7-72, 65-71

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical sound from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the music. When the music is finished, you can press the push switch again. Then the IC will be triggered and play the music again. The pointer of the meter will also oscillate to the rhythm of the music as before.

EXPERIMENT Wiring Sequence

•

Touch control musical sound with LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical sound from the speaker, and LED will light up. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered and play the music again.

Wiring Sequence

•

8-51, 50-53-70, 69-94-3, 93-73-4, 7-72, 52-71

EXPERIMENT

•

Tapping activated musical sound with LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Tap the buzzer. You will hear musical sound from the speaker, and LED will light up. When the music is finished, you can tap the buzzer again. Then the IC will be triggered and play the music again.

Wiring Sequence

•

8-51, 50-63-70, 69-94-3, 93-73-4, 7-72, 64-71

EXPERIMENT

•

Magnet control musical sound with LED

8-51, 50-68-70, 69-94-3 93-73-4, 7-72, 67-71

EXPERIMENT

•

Tapping activated musical sound with meter

64-71, 8-51, 50-63-70, 69-3-2, 73-4-1, 7-72

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Tap the buzzer. You will hear musical sound from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the music. When the music is finished, you can tap the buzzer again. Then the IC will be triggered and play the music again. The pointer of the meter will also oscillate to the rhythm of the music as before. P.19

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical sound from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the music. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered and play the music again. The pointer of the meter will also oscillate to the rhythm of the music as before.

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical sound from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the music. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered and play the music again. The pointer of the meter will also oscillate to the rhythm of the music as before.

Wiring Sequence

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical sound from the speaker. At the same time the pointer of the meter will oscillate to the rhythm of the music. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered and play the music again. The pointer of the meter will also oscillate to the rhythm of the music as before.

Wiring Sequence

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical sound from the buzzer, and LED will light up. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the music as before.

Wiring Sequence

95 Touch control musical sound from buzzer with LED

8-51, 50-53-70, 69-64-96, 73-63-95, 7-72, 52-71

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical sound from the buzzer, and LED will light up. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the music as before.

EXPERIMENT Wiring Sequence

•

94 Manual control musical sound from buzzer with LED

8-51, 50-66-70, 69-64-96, 73-63-95, 7-72, 65-71

EXPERIMENT

•

93 Magnet control musical sound with meter

8-51, 50-68-70, 69-3-2, 73-4-1, 7-72, 67-71

EXPERIMENT

•

92 Light control musical sound with meter

8-51, 50-36-70, 69-2-3, 73-4-1, 7-72, 35-71

EXPERIMENT

•

91 Touch control musical sound with meter

8-51, 50-53-70, 69-2-3, 73-4-1, 7-72, 52-71

96 Light control musical sound from buzzer with LED

8-51, 50-36-70, 69-64-96, 73-63-95, 7-72, 35-71

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical sound from the buzzer, and LED will light up. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered again and play the music as before. P.20

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical sound from the buzzer, and LED will light up. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the music as before.

Wiring Sequence

100 Light control meter and LED

8-50, 94-80-51-36-2, 7-83, 101-93-81, 35-82, 1-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. LED will light up and the meter will show a non-zero reading. This means there is current through the meter. After a while, the LED will extinguish and the meter pointer will go back to zero. You can repeat the experiment by covering the LDR completely and then uncover it again.

EXPERIMENT Wiring Sequence

101 Touch control meter and LED

8-50, 94-80-53-51-2, 7-83, 101-93-81, 52-82, 1-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and tr y again. LED will light up and the meter will show a non-zero reading. This means there is current through the meter. After a while, the LED will extinguish and the meter pointer will go back to zero. You can repeat the experiment by using your finger to touch the touch plate again.

EXPERIMENT Wiring Sequence

102

Tapping activated meter and LED

8-50, 94-80-63-51-2, 7-83, 101-93-81, 64-82, 1-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Tap the buzzer. Note that if there is no response, you may have to dampen your finger and try again. LED will light up and the meter will show a non-zero reading. This means there is current through the meter. After a while, the LED will extinguish and the meter pointer will go back to zero. You can repeat the experiment by tapping the buzzer again.

EXPERIMENT Wiring Sequence

•

Magnet control meter and LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. LED will light up and the meter will show a non-zero reading. This means there is current through the meter. After a while, the LED will extinguish and the meter pointer will go back to zero. You can repeat the experiment by accessing the reed switch with the magnetic pole again.

Wiring Sequence

•

8-50, 51-68-80-94-2, 7-83, 101-93-81, 67-82, 1-102

EXPERIMENT

•

Manual control meter and LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. LED will light up and the meter will show a non-zero reading. This means there is current through the meter. After a while, the LED will extinguish and the meter pointer will go back to zero. You can repeat the experiment by pressing the push switch again.

Wiring Sequence

•

8-50, 51-66-80-94-2, 7-83, 101-93-81, 65-82, 1-102

EXPERIMENT

•

Magnet control musical soundfrom buzzer with LED

8-51, 50-68-70, 69-64-96, 73-63-95, 7-72, 67-71

EXPERIMENT

•

103 Manual control rooster crowing sound

8-51, 98-66-50-3, 65-75, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce rooster crowing sound.

P.21

EXPERIMENT Wiring Sequence

•

Wiring Sequence

Manual control rooster crowing sound with volume control

8-51, 98-75-50-16-3, 7-77-43, 4-42, 17-41, 97-78-18

108

Manual control dog barking sound

8-51, 98-66-50-3, 65-75-76, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce dog barking sound.

EXPERIMENT Wiring Sequence

109

Magnet control dog barking sound

8-51, 98-68-50-3, 67-75-76, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce dog barking sound.

EXPERIMENT Wiring Sequence

110

Touch control dog barking sound

8-51, 98-53-50-3, 52-75-76, 7-77-43, 4-42, 97-78-41

EXPERIMENT Wiring Sequence

•

107

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce rooster crowing sound. By adjusting the variable resistor you can change the volume.

Wiring Sequence

•

Light control rooster crowing sound

8-51, 98-36-50-3, 35-75, 7-77-43, 4-42, 97-78-41

EXPERIMENT

•

106

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce rooster crowing sound.

Wiring Sequence

•

Touch control rooster crowing sound

8-51, 98-53-50-3, 52-75, 7-77-43 4-42 97-78-41

EXPERIMENT

•

105

EXPERIMENT

•

Magnet control rooster crowing sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce rooster crowing sound.

EXPERIMENT

•

104

8-51, 98-68-50-3, 67-75, 7-77-43, 4-42 97-78-41

111

Light control dog barking sound

8-51, 98-50-36-3, 35-75-76, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce dog barking sound. P.22

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce dog barking sound. By adjusting the variable resistor you can change the volume.

Wiring Sequence

Touch control horse neighing sound

Wiring Sequence

116

Light control horse neighing sound

8-51, 98-50-36-3, 35-74-75, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce horse neighing sound.

EXPERIMENT

Wiring Sequence

117

Manual control horse neighing sound with volume control

8-51, 98-75-74-50-16-3, 7-77-43, 4-42, 17-41, 97-78-18

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce horse neighing sound. By adjusting the variable resistor you can change the volume.

EXPERIMENT Wiring Sequence

118

Manual control bird chirping sound

8-51, 98-66-50-3, 65-75, 7-77-74-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce bird chirping sound.

EXPERIMENT Wiring Sequence

•

115

8-51, 98-53-50-3, 52-74-75, 7-77-43, 4-42, 97-78-41

EXPERIMENT

•

Magnet control horse neighing sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce horse neighing sound.

Wiring Sequence

•

114

8-51, 98-68-50-3, 67-74-75, 7-77-43, 4-42, 97-78-41

EXPERIMENT

•

Manual control horse neighing sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce horse neighing sound.

Wiring Sequence

•

113

8-51, 98-66-50-3, 65-74-75, 7-77-43, 4-42, 97-78-41

EXPERIMENT

•

Manual control dog barking sound with volume control

8-51, 98-76-75-50-16-3, 7-77-43, 4-42, 17-41, 97-78-18

EXPERIMENT

•

112

119

Magnet control bird chirping sound

8-51, 98-68-50-3, 67-75, 7-77-74-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole.. The speaker will produce bird chirping sound. P.23

EXPERIMENT Wiring Sequence

•

Wiring Sequence

Manual control cat meowing sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce cat meowing sound.

Wiring Sequence

124

Magnet control cat meowing sound

8-51, 98-68-50-3, 67-74, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce cat meowing sound.

EXPERIMENT Wiring Sequence

125

Touch control cat meowing sound

8-51, 98-53-50-3, 52-74, 7-77-43, 4-42, 97-78-41

EXPERIMENT Wiring Sequence

126

Light control cat meowing sound

8-51, 98-50-36-3, 35-74, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce cat meowing sound.

EXPERIMENT Wiring Sequence

•

123

8-51, 98-66-50-3, 65-74, 7-77-43, 4-42, 97-78-41

EXPERIMENT

•

Manual control bird chirping sound with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce bird chirping sound. By adjusting the variable resistor you can change the volume.

Wiring Sequence

•

122

8-51, 98-75-50-16-3, 7-77-74-43, 4-42, 17-41, 97-78-18

EXPERIMENT

•

Light control bird chirping sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce bird chirping sound.

Wiring Sequence

•

121

8-51, 98-50-36-3, 35-75, 7-74-77-43, 4-42, 97-78-41

EXPERIMENT

•

Touch control bird chirping sound

EXPERIMENT

•

120

8-51, 98-53-50-3, 52-75, 7-74-77-43, 4-42, 97-78-41

127

Manual control cat meowing sound with volume control

8-51, 98-74-50-16-3, 7-77-43, 4-42, 17-41, 97-78-18

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce cat meowing sound. By adjusting the variable resistor you can change the volume. P.24

EXPERIMENT Wiring Sequence

•

8-51, 98-50-3, 97-78-66-41, 65-76, 7-77-74-43, 4-42

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce cuckoo calling sound.

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce cuckoo calling sound.

Wiring Sequence

130 Touch control cuckoo calling sound

8-51, 98-50-3, 97-78-53-41, 52-76, 7-77-74-43, 4-42

EXPERIMENT Wiring Sequence

•

129 Magnet control cuckoo calling sound

8-51, 98-50-3, 97-67-78-41, 68-76, 7-77-74-43, 4-42

EXPERIMENT

•

128 Manual control cuckoo calling sound

131 Light control cuckoo calling sound

8-51, 98-50-3, 97-78-41-36, 35-76, 7-77-74-43, 4-42

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce cuckoo calling sound.

EXPERIMENT

132 Manual control cuckoo calling sound with volume control

Wiring Sequence

•

8-51, 98-50-16-3, 7-77-74-43, 4-42, 17-41, 97-78-76-18

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce cuckoo calling sound. By adjusting the variable resistor you can change the volume.

EXPERIMENT Wiring Sequence

•

8-51, 98-50-3, 97-78-66-41, 7-43-77, 4-42, 76-65

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce sheep baaing sound.

EXPERIMENT Wiring Sequence

•

134 Magnet control sheep baaing sound

8-51, 98-50-3, 97-78-67-41, 7-43-77, 4-42, 76-68

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce sheep baaing sound.

EXPERIMENT Wiring Sequence

•

133 Manual control sheep baaing sound

135 Touch control sheep baaing sound

8-51, 98-50-3, 97-78-52-41, 7-43-77, 4-42, 76-53

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce sheep baaing sound.

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce duck quacking sound.

Wiring Sequence

140

Touch control duck quacking sound

8-51, 76-75-53, 98-50-3, 97-78-52-41, 7-77-43, 4-42

EXPERIMENT Wiring Sequence

141 Light control duck quacking sound

8-51, 76-75-35, 98-50-3, 97-78-41-36, 7-77-43, 4-42

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce duck quacking sound.

EXPERIMENT Wiring Sequence

142

Manual control duck quacking sound with volume control

8-51, 98-50-16-3, 7-77-43, 4-42, 17-41, 97-78-76-75-18

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce duck quacking sound. By adjusting the variable resistor you can change the volume.

EXPERIMENT Wiring Sequence

•

Magnet control duck quacking sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce duck quacking sound.

Wiring Sequence

•

139

8-51, 76-75-68, 98-50-3, 97-78-67-41, 7-77-43, 4-42

EXPERIMENT

•

138 Manual control duck quacking sound

8-51, 76-75-65, 98-50-3, 97-78-66-41, 7-77-43, 4-42

EXPERIMENT

•

Manual control sheep baaing sound with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce sheep baaing sound. By adjusting the variable resistor you can change the volume.

Wiring Sequence

•

137

8-51, 98-50-16-3, 7-77-43, 4-42, 17-41, 97-78-76-18

EXPERIMENT

•

136 Light control sheep baaing sound

8-51, 97-50-3 98-78-36-41, 7-77-43, 4-42, 35-76

143 Manual control frog croaking sound

8-51, 98-66-50-3, 65-75, 7-77-43, 76-74, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The speaker will produce frog croaking sound.

P.26

EXPERIMENT Wiring Sequence

•

Wiring Sequence

145

Touch control frog croaking sound

8-51, 98-53-50-3, 52-75, 76-74, 7-77-43, 4-42, 97-78-41

EXPERIMENT Wiring Sequence

•

Magnet control frog croaking sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The speaker will produce frog croaking sound.

EXPERIMENT

•

144

8-51, 98-68-50-3, 67-75, 7-77-43, 76-74, 4-42, 97-78-41

146

Light control frog croaking sound

8-51, 98-50-36-3, 35-75, 76-74, 7-77-43, 4-42, 97-78-41

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. The speaker will produce frog croaking sound.

EXPERIMENT

147

Wiring Sequence

8-51, 98-75-50-16-3, 76-74, 7-77-43, 4-42, 17-41, 97-78-18

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce frog croaking sound. By adjusting the variable resistor you can change the volume.

EXPERIMENT

Wiring Sequence

•

Switching between frog croaking sound and bird chirping sound

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will produce either frog croaking sound or bird chirping sound, depends on the initial value of the variable resistor. Then adjust the variable resistor to the other side. The speaker will switch to another animal sound.

Wiring Sequence

149 Series connection of resistors

8-2, 1-66-102, 65-101-103, 7-104

Complete all wiring connections as indicated in the sequence. The reading of the meter will indicate that there is current passing through it. There are 2 resistors connected in series in this circuit. Press the push switch. Now one resistor is short circuited and current does not need to pass through it. The reading of the meter will increase, indicating a larger current flowing in the circuit.

EXPERIMENT Wiring Sequence

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148

8-51, 98-50-75-3, 76-74-18, 7-17-77-43, 4-42, 97-78-41

EXPERIMENT

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Manual control frog croaking sound with volume control

150

Parallel connection of resistors

8-2, 1-103-105, 7-104-66, 65-106

Complete all wiring connections as indicated in the sequence. The reading of the meter will indicate that there is current passing through it. There are 2 resistors connected in parallel in this circuit. One of them is already connected in the circuit while the other one is not. You will have to press the push switch to connect the latter one to the circuit. Now press the push switch. A parallel circuit of resistor is formed. Smaller resultant resistance is formed. The reading of the meter will increase, indicating a larger current flowing in the circuit. P.27

EXPERIMENT Wiring Sequence

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Wiring Sequence

0-3V voltmeter

Complete all wiring connections as indicated in the sequence. Adjust the variable resistor to a point that the reading of the meter is 3. Now the circuit is properly calibrated, and you can use this as a voltmeter to measure the voltage of a power source of range between 0-3V. For example, you have a battery and want to measure its voltage. First disconnect the connecting wire at spring 7 and connect it to the negative pole of that battery. Also disconnect the connecting wire at spring 8 and connect it to the positive pole of that battery. Now the reading on the meter indicates the voltage of the battery you are testing. Say, it points to 2. Then this indicates the output voltage of the battery is 2V.

Wiring Sequence

154

0-6V voltmeter

7-10, 8-102, 101-17, 1-9, 2-18

Complete all wiring connections as indicated in the sequence. Adjust the variable resistor to a point that the reading of the meter is 3. Now the circuit is properly calibrated, and you can use this as a voltmeter to measure the voltage of a power source of range between 0-6V. For example, you have a large battery and want to measure its voltage. First disconnect the connecting wire at spring 7 and connect it to the negative pole of that battery. Also disconnect the connecting wire at spring 10 and connect it to the positive pole of that battery. Now see the reading on the meter. Multiple the value by 2, and the number will be the value of the output voltage of the battery. For example, if the reading on the meter is 2.5, then multiple it by 2 gives 5. This means the voltage out put of the battery is 5V.

EXPERIMENT Wiring Sequence

155

Discharging process of capacitor

8-51, 2-50-32, 1-104, 7-103-31

Complete all wiring connections as indicated in the sequence. Switch on the main switch. You can see the pointer of the meter points to a certain non-zero value. This indicates that there is current flowing in the circuit. After a few seconds, switch off the main switch. You can see the pointer of the meter will gradually go back to zero instead of dropping back to zero immediately. This is due to the action of the capacitor which discharges the stored electricity gradually. When the discharge ends, the meter pointer returns to zero.

EXPERIMENT Wiring Sequence

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153

8-98, 97-17, 1-7, 2-18

EXPERIMENT

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Function of variable resistor

Complete all wiring connections as indicated in the sequence. You can adjust the variable resistor to change the resistance of it, and thus change the amount of current. which can be seen from the reading of the meter.

Wiring Sequence

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152

8-2, 1-17, 18-103, 7-104

EXPERIMENT

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Function of Light Dependent Resistor (LDR)

Complete all wiring connections as indicated in the sequence. The reading of the meter will be zero or slightly larger than zero. When the LDR is shone by light, the reading of the meter will increase. When it is shaded, the reading will decrease. This is to show that the resistance of LDR is changing according to the amount of light shining upon it.

EXPERIMENT

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151

8-2, 1-36, 35-103, 7-104

156

Charging process of capacitor

8-103, 2-104, 1-32-66, 31-65-50, 7-51

Complete all wiring connections as indicated in the sequence. Switch on the main switch. You can see the pointer of the meter points to a certain value immediately. And then it will gradually fall back to zero, even the switch is still on. This is because the capacitor is charged fully. Thus no more electricity flows in the circuit. Then switch off the main switch and press the push switch. The capacitor will be discharged, and you can perform the experiment again. P.28

EXPERIMENT Wiring Sequence

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Wiring Sequence

Lux indicator

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Green LED will light up while red LED will not. Shade the LDR a little bit, green LED will become dimmer. Shade the LDR a bit more, then green LED will extinguish and red LED will start to light dimly. When the LDR is covered completely, green LED will extinguish and red LED will light up completely. This principle can be used as light indicator, to reflect the amount of light shining on the indicator.

Wiring Sequence

160

Connection indicator

8-50, 51-104-96-98, 103-66 65-44-105, 46-94-95-97, 7-93-106-45

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Red LED will light up and green LED extinguish. Press the push switch. Green LED will light up and red LED extinguish. This principle can be use for indicating the break/connect of circuit: When the door, car-door or window is closed, this is just like the push switch is being pressed, and thus green LED lights up while red LED does not. When the door, car-door or window is opened, this is just like the push switch is released, and thus red LED lights up while green LED does not.

EXPERIMENT Wiring Sequence

161

Light control stop-and-spin electric fan

7-51, 6-43, 36-42-106-8, 41-46, 105-44-31, 32-35-104, 103-50-45-5

Complete all wiring connections as indicated in the sequence. Switch on the main switch, then the fan will spin. Now cover the LRD completely. The fan will stop spinning for a while. However, after keeping on covering the LDR for a time period, the fan will suddenly start to spin again! If you uncover the LDR, then the fan will spin even faster for a while! After some time, the spinning speed will gradually back to normal. Cover the LDR again will stop the rotation again and the process mentioned above can be repeated.

EXPERIMENT Wiring Sequence

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159

8-50, 51-36-96-98, 35-44-105, 46-94-95-97, 7-93-106-45

EXPERIMENT

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Rain indicator

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Drop a drop of water on the touch-plate, then red LED will light up and green LED will extinguish. Wipe the water off the touch-plate. Then green LED will light up and red LED will extinguish. This principle can be used for rain indicating or water-level warning. When it rains or water-level goes beyond warning level, red LED will light up, green LED will extinguish. Otherwise red LED will extinguish and green LED will light up.

Wiring Sequence

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158

8-50, 51-53-96-98, 52-44-105, 46-94-95-97, 7-93-106-45

EXPERIMENT

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Microphone tester

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Now speak loudly near the microphone or blow to it. If the pointer deflects, then this shows that the microphone is working.

EXPERIMENT

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157

8-50, 102-98-51, 2-97-46, 20-44-101, 1-7-19-45

162

Magnet control stop-and-spin electric fan

6-43, 7-51, 106-68-42-8, 41-46, 105-44-31, 32-67-104, 103-5

Complete all wiring connections as indicated in the sequence. Switch on the main switch, then after a while the fan will spin. Access the reed switch with the magnetic pole. The spinning speed will be changed for a while, and gradually back to the original spinning speed. Remove the magnetic pole, and then the spinning will stop for a while. After waiting for some time, the spinning will resume again like it did at the beginning of the experiment! P.29

EXPERIMENT Wiring Sequence

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Complete all wiring connections as indicated in the sequence. Switch on the main switch, then after a while the fan will spin. Press the push switch, and the spinning speed will be changed for a while. Do not release the push switch, and the speed will gradually back to the original spinning speed. And then release the push switch. The spinning will stop for a while. After waiting for some time, the spinning will resume again like it did at the beginning of the experiment!

Wiring Sequence

165

Magnet control extinguish-and-light LED

7-51, 90-43, 68-42-106-8, 41-46, 105-44-31, 32-67-104, 103-50-45-89

Complete all wiring connections as indicated in the sequence. Switch on the main switch. LED will light up. Use the magnetic pole to access the reed switch, and then remove the magnetic pole. LED will extinguish. Then wait for a time period, LED will light up again! You can repeat the experiment without switching off the main switch.

EXPERIMENT Wiring Sequence

166

Manual control extinguish-and-light LED

7-51, 90-43, 66-42-106-8, 41-46, 105-44-31, 32-65-104, 103-50-45-89

Complete all wiring connections as indicated in the sequence. Switch on the main switch. LED will light up. Press the push switch, and then release it. LED will extinguish. Then wait for a time period, LED will light up again! You can repeat the experiment without switching off the main switch.

EXPERIMENT Wiring Sequence

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Light control extinguish-and-light LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. LED will light up. Then cover the LDR completely. LED will extinguish. Do not uncover the LDR and wait. After a while, LED will light up again! And then if you uncover the LDR, the status will be just like the beginning of the experiment. You can repeat the experiment without switching off the main switch.

Wiring Sequence

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164

7-51, 90-43, 36-42-106-8, 41-46, 105-44-31, 32-35-104, 103-50-45-89

EXPERIMENT

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Manual control stop-and- spin electric fan

6-43, 7-51, 66-42-106-8 41-46, 105-44-31, 32-65-104, 103-50-45-5

EXPERIMENT

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163

167

6V LED

8-92, 50-9 7-10, 51-91

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The 6V LED will light up. Since the LED used in this circuitry is a 6V LED, it is brighter than 2.5V LED and small LED.

EXPERIMENT

168

Wiring Sequence

8-102-42, 101-18, 44-17, 92-43, 41-46, 91-45-50-16, 7-10,

•

Adjustable LED light

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Adjust the variable resistor from minimum to maximum, the brightness will change from dim to bright.

P.30

EXPERIMENT Wiring Sequence

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Wiring Sequence

171

Magnet control delayed extinguishing large LED

8-67-42, 7-10, 9-51, 44-101, 92-43, 41-46, 91-45-50-31, 32-68-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with a magnetic pole. LED will light up. After you have removed the magnetic pole, just wait for some time and see. LED light will gradually extinguish.

EXPERIMENT Wiring Sequence

172

Touch control delayed extinguishing large LED

8-53-42, 7-10, 9-51, 44-101, 92-43, 41-46, 91-45-50-31, 32-52-102

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Touch the touch-plate with finger. You may have to dampen your finger with water before touching. The circuit is then connected and electricity will flow through the triode so that LED will light up. At the same time the capacitor is being charged. Then remove your finger. Note that you may have to wipe the water off the touch-plate. You will see the triode can still keep conductive for some time as the capacitor will release the stored electricity. Therefore the LED will not extinguish immediately after you remove your finger from the touch-plate.

EXPERIMENT Wiring Sequence

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Manual control delayed extinguishing large LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. By pressing the push switch, LED will light up. After you have released the push switch, just wait for some time and see. LED light will gradually extinguish.

Wiring Sequence

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170

8-66-42, 7-10, 9-51, 44-101, 92-43, 41-46, 91-45-50-31, 32-65-102

EXPERIMENT

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Practical voltage adjustable circuitry

Complete all wiring connections as indicated in the sequence. Switch on the main switch. LED will light up. Adjust the variable resistor from minimum to maximum, the meter pointer will also change from minimum to maximum, and the output voltage will also change from minimum to maximum. At this time, the voltage indicated by the meter is the output voltage. This indicates the voltage that will be provided when connecting a device to VOUT+ and VOUT-. You can just assume VOUT+ and VOUT- are +ve and –ve poles of a battery which is a source of electricity power. For example, adjust the variable resistor so that the reading of the meter is 3V. Then connect the motor to VOUT+ and VOUT- . At this time, there will be a 3V current pass through the motor to make it work.In practice, this circuitry can be adjusted per desired voltage. It is easy and practical.

EXPERIMENT

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169

97-18, 7-10, 9-51, 98-94-42-8, 103-2, 44-17, 41-46, 99-45-50-16-1-VOUT(-), 100-93, 104-43-VOUT+

173

Light control alarm system (Large LED)

8-36-42, 7-10, 9-51, 92-43, 41-46, 91-45-50-105, 106-35-44

Complete all wiring connections as indicated in the sequence. The LED automatically lights up. If LDR is shaded completely, the LED will not light up. The LED will only light up when the light falls on the LDR. This circuit can be used as a light-control alarm system. For example, when a box containing important possession is closed, nothing happens. When the box is broken open, light will be shined into the box and so the warning signal will light up, indicating the box is opened by someone!

P.31

EXPERIMENT Wiring Sequence

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Wiring Sequence

176

Touch control bell sound with red LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 52-31-44, 53-32-43, 106-63-41, 64-99, 42-93, 7-10

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then touch the touch-plate with finger. The circuit will be connected and thus the speaker will produce bell sound. At the same time, red LED will light up. When the finger is removed from the touch-plate, the circuit is disconnected and thus everything will stop. Note that you may have to dampen your finger with water before touching the touch-plate, and wipe the water off the touch plate after you remove your finger from it.

EXPERIMENT Wiring Sequence

177

Touch control motor dory sound with red LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 52-31-44, 53-32-43, 106-25-63-41, 64-26-99, 42-93,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then touch the touch-plate with finger. The circuit will be connected and thus the speaker will produce motor dory sound. At the same time, red LED will light up. When the finger is removed from the touch-plate, the circuit is disconnected and thus everything will stop. Note that you may have to dampen your finger with water before touching the touch-plate, and wipe the water off the touch plate after you remove your finger from it.

EXPERIMENT Wiring Sequence

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Light control extinguish-and-light super LED light

Complete all wiring connections as indicated in the sequence. Switch on the main switch. LED will light up. Then cover the LDR completely. LED will extinguish. Do not uncover the LDR and wait. After a while, LED will light up again! And then if you uncover the LDR, the statue will be just like the beginning of the experiment. You can repeat the experiment without switching off the main switch.

Wiring Sequence

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175

7-10, 9-51, 92-43, 36-42-106-8, 41-46, 105-44-31, 32-35-104, 103-50-45-91

EXPERIMENT

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Darkness activated LED (Large LED)

Complete all wiring connections as indicated in the sequence. The LED will not light up since there is light falling on the LDR. When the LDR is shaded completely, the LED will light up. This circuit can be used as darkness activated lighting system. For example, street light will be off automatically during day time. When night falls, no light falls on the light sensor (LDR in this case), the circuit will be switched on, and thus street light will light up in the evening automatically.

EXPERIMENT

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174

8-105-42, 7-10, 9-51, 92-43, 41-46, 91-45-50-35, 44-36-106

178

Touch control ship sound with LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 52-31-44, 53-32-43, 106-27-63-41, 64-28-99, 42-93, 7-10

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then touch the touch-plate with finger. The circuit will be connected and thus the speaker will produce ship sound. At the same time, LED will light up. When the finger is removed from the touch-plate, the circuit is disconnected and thus everything will stop. Note that you may have to dampen your finger with water before touching the touch-plate, and wipe the water off the touch plate after you remove your finger from it. P.32

EXPERIMENT Wiring Sequence

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Wiring Sequence

Magnet control ship sound with LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then use the magnetic pole to access the reed switch. The circuit will be connected and thus the speaker will produce ship sound. At the same time LED will light up. When the magnetic pole is removed from the reed switch, the circuit is disconnected and thus everything will stop.

Wiring Sequence

182

Magnet control electronic metronome with LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 68-44, 67-43, 106-29-41, 30-99, 42-93, 7-10

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then use the magnetic pole to access the reed switch. The circuit is then connected and the speaker will make a sound and LED will light up. Remove the magnetic pole, then LED will flash and gradually extinguish. At the same time speaker will produce “dic, dic” sound and gradually stop. Both LED and speaker are like oscillating and will fade out gradually.

EXPERIMENT Wiring Sequence

183

Manual control electronic metronome with LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 66-44, 65-43, 106-29-41, 30-99, 42-93, 7-10

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then press the push switch. The circuit is then connected and the speaker will make a sound and LED will light up. Release the push switch, then LED will flash and gradually extinguish. At the same time speaker will produce “dic, dic” sound and gradually stop. Both LED and speaker are like oscillating and will fade away gradually.

EXPERIMENT Wiring Sequence

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181

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 68-31-44, 67-32-43, 106-27-63-41, 64-28-99, 42-93, 7-10

EXPERIMENT

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Magnet control motor dory sound with red LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then use the magnetic pole to access the reed switch. The circuit will be connected and thus the speaker will produce motor dory sound. At the same time red LED will light up. When the magnetic pole is removed from the reed switch, the circuit is disconnected and thus everything will stop.

Wiring Sequence

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180

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 68-31-44, 67-32-43, 106-25-63-41, 64-26-99, 42-93, 7-10

EXPERIMENT

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Magnet control bell sound with LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. The circuit will be connected and thus the speaker will produce bell sound. At the same time LED will light up. And then take away the magnetic pole. The circuit is disconnected and thus everything will stop.

EXPERIMENT

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179

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3 31-68-44, 67-32-43, 106-63-41, 64-99, 42-93,

184

Manual control bell sound with LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 31-44-66, 65-32-43, 106-63-41, 64-99, 42-93, 7-10

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The circuit will be connected and thus the speaker will produce bell sound. At the same time LED will light up. And then release the push switch. The circuit is disconnected and thus everything will stop. P.33

EXPERIMENT Wiring Sequence

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Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The circuit will be connected and thus the speaker will produce motor dory sound. At the same time red LED will light up. And then release the push switch. The circuit is disconnected and thus everything will stop.

Wiring Sequence

Manual control delayed motor dory sound

188

Manual control metronome

7-10, 9-50, 51-45-33-31-3, 43-30-4, 29-100, 99-106-44, 41-46, 66-42-34-98, 97-8, 105-65-32

189

Delayed extinguishing flashing LED

7-10, 9-50, 89-51-45-33-31-17, 90-43-30-18, 29-100, 99-106-44, 41-46, 66-42-34-98, 97-8, 105-65-32

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Adjust the variable resistor to the maximum value. Then press the push switch without releasing it. The LED will flash. If you release the push switch, due to the releasing of electricity of capacitor, the LED will still keep on flashing for a while before it extinguish completely. If you do the experiment again but adjust the variable resistor to the minimum value before pressing the push switch, then it will glow without flashing. After releasing the push switch, the LED will still glow for a while. As time passes, it will flash slowly and gradually extinguish.

EXPERIMENT Wiring Sequence

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187

7-10, 9-50, 51-45-33-29-3, 43-64-4, 63-100, 99-106-44, 41-46, 66-42-34-98, 97-8, 105-65-30

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then press the push switch. The circuit is then connected and the speaker will produce “dic, dic” sound. When the push switch is released, speaker will still keep on producing the “dic, dic” sound, but the sound will gradually fading away and stop finally.

EXPERIMENT

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Manual control ship sound with LED

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The circuit will be connected and thus the speaker will produce motor dory sound. And then release the push switch. The circuit is disconnected. However the motor dory sound will still prolong for a period and will fade away gradually.

EXPERIMENT

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186

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 66-31-44, 65-32-43, 106-27-63-41, 64-28-99, 42-93, 7-

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. The circuit will be connected and thus the speaker will produce ship sound. At the same time LED will light up. And then release the push switch. The circuit is disconnected and thus everything will stop.

EXPERIMENT

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Manual control motor dory sound with red LED

9-51, 94-34-98-4, 97-8, 105-50-45-33, 100-46-3, 66-31-44, 65-32-43, 106-25-63-41, 64-26-99, 42-93, 7-10

EXPERIMENT

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185

190

Multitone producer

7-10, 9-50, 51-93-33-3, 18-26, 43-17-4, 105-44-25, 41-46, 106-42-34-98, 97-8, 45-94

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then the loudspeaker will make a noisy sound and LED will light up. Adjusting the variable resistor for changing the resistance will affect the sound and the brightness of the LED. P.34

EXPERIMENT Wiring Sequence

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Wiring Sequence

Electronic cicada

7-10, 9-50, 51-93-33-3, 43-17-4, 105-63-27-44, 41-46, 106-42-34-98, 97-8, 18-28-64, 45-94

194

Ship sound

7-10, 9-50, 51-93-33-3, 43-17-4, 105-25-27-44, 41-46, 106-42-34-98, 97-8, 18-28-26, 45-94

195

Boresome humming

7-10, 93-33-9-3, 45-94, 43-100-4, 105-25-44, 65-46, 106-42-34-98, 97-8, 99-26, 66-41

196

Automobile’s “di, di” sound

7-10, 93-33-9-3, 45-94, 43-100-4, 105-25-27-44, 65-46, 106-42-34-98, 97-8, 99-26-28,

Complete all wiring connections as indicated in the sequence. When the push switch is pressed, LED will light up, and the loudspeaker will produce “di, di” sound like that of automobile.

EXPERIMENT Wiring Sequence

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193

Complete all wiring connections as indicated in the sequence. When the push switch is pressed, LED will light up, and the loudspeaker will produce boresome humming sound like that of a mosquito.

EXPERIMENT

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7-10, 9-50, 51-93-33-3, 18-26, 43-17-4, 105-65, 66-44-25, 41-46, 106-42-34-98, 97-8, 45-94

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then the loudspeaker will produce ship sound. Adjusting the variable resistor can change the resistance and hence change the sound tone.

EXPERIMENT

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Manual control multitone producer

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The LED will light up and loudspeaker will produce cicada like sound. Adjusting the variable resistor for changing the resistance will affect the sound tone and the brightness of LED.

EXPERIMENT

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192

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch, and then the circuit will be connected. The loudspeaker will make a noisy sound and LED will light up. Adjusting the variable resistor for changing the resistance will affect the sound and the brightness of the LED.

EXPERIMENT

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Magnet control multitone producer

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use a magnetic pole to access the reed switch. Then the circuit will be connected and the loudspeaker will make a noisy sound and LED will light up. Adjusting the variable resistor for changing the resistance will affect the sound and the brightness of the LED.

EXPERIMENT

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191

7-10, 9-50, 51-93-33-3, 18-26, 43-17-4, 105-67, 68-44-25, 41-46, 106-42-34-98, 97-8, 45-94

197

Hoofbeat

7-10, 93-33-9-3, 45-94, 43-100-4, 105-30-44, 65-46, 106-42-34-98, 97-8, 99-29, 66-41

Complete all wiring connections as indicated in the sequence. When the push switch is pressed, LED will light up, and the loudspeaker will produce hoofbeat like sound. P.35

EXPERIMENT Wiring Sequence

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Wiring Sequence

Magnet control AM radio receiver with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use the magnetic pole to access the reed switch. The circuit is connected and LED will light up. Adjusting the variable condenser to suitable position will allow it to receive AM radio signals. Adjusting the variable resistor can change the volume. Since AM radio wave is sensitive towards signal direction, when the radio signal is weak, try to move the radio to other direction. Note: If you cannot receive AM signal in indoor area, you can go to outdoor areas and try it again.

Wiring Sequence

200

AM radio receiver with mute function

7-10, 105-11-21-26, 9-50, 95-87-51-4, 99-96, 66-103, 65-44, 101-106-40-30-28, 85-45-27-25-39, 12-22-37-38, 104-102-100-84-8, 29-46-86,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then the LED will light up. Adjusting the variable condenser to suitable position will allow it to receive AM radio signals. By pressing the push switch, the radio will be mute. Since AM radio wave is sensitive towards signal direction, when the radio signal is weak, try to move the radio to other direction. Note: If you cannot receive AM signal in indoor area, you can go to outdoor areas and try again.

EXPERIMENT Wiring Sequence

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199

7-10, 102-100-84-8, 9-68, 95-87-67-4, 101-106-40-30-28, 85-27-25-39-16, 12-22-37-38, 105-11-21-26, 29-18, 17-86, 3-88, 99-96

EXPERIMENT

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Big voice AM radio receiver with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Then the LED will light up. Adjusting the variable condenser to suitable position will allow it to receive AM radio signals. Adjusting the variable resistor can change the volume. Since AM radio wave is sensitive towards signal direction, when the radio signal is weak, try to move the radio to other direction. Note: If you cannot receive AM signal in indoor area, you can go to outdoor areas and try it again.

EXPERIMENT

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198

7-10, 102-100-84-8, 9-50, 95-87-51-4, 101-106-40-30-28, 85-27-25-39-16, 12-22-37-38, 105-11-21-26, 29-18, 17-86, 3-88, 99-96

201 Big voice FM radio receiver with volume control

7-10, 15-84-8, 9-50, 87-51-4, 3-88, 13-18, 17-86, 14-16-85

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. Adjusting the variable resistor can change the volume. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

P.36

EXPERIMENT Wiring Sequence

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Wiring Sequence

203

FM radio receiver with mute function

7-10, 104-84-15-8, 9-50, 87-51-4, 3-88, 13-46-86, 14-45-85, 44-65, 103-66

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. By pressing the push switch, the radio will be mute. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

EXPERIMENT Wiring Sequence

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Magnet control FM radio receiver with volume control

Complete all wiring connections as indicated in the sequence. Use the magnetic pole to access the reed switch. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. Adjusting the variable resistor can change the volume. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

EXPERIMENT

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202

7-10, 104-42-8, 103-68, 84-45-43-15, 106-87-9-4, 3-88, 13-18, 17-86, 14-16-85, 46-41, 105-67-44

204

Big voice AM/FM radio receiver with volume control

7-10, 102-15-84-8, 9-50, 87-51-4, 101-106-40-30-28, 85-27-25-39-16-14, 12-22-37-38, 105-11-21-26, 29-B, A-18, 17-86, 3-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If you want to use AM mode, connect lead A and lead B. You may connect both leads to an unused spring for easy handling. And then adjust the variable condenser to suitable position for receiving AM channels. Since AM radio wave is sensitive towards signal direction, when the radio signal is weak, try to move the radio to other direction. If you want to use FM mode, connect lead A and lead C. You may connect both leads to an unused spring for easy handling. Press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received. For both AM and FM mode, adjusting the variable resistor can change the volume. This circuit enable users to switch between AM and FM easily. Note: If you cannot receive AM signal in indoor area, you can go to outdoor areas and try it again.

P.37

EXPERIMENT Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Touch the touch plate with your finger. Note that if there is no response, you may need to dampen your finger first before touching. Then the circuit will be connected. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. Adjusting the variable resistor can change the volume. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

Wiring Sequence

Daylight activated FM radio receiver with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The circuit is connected. However if the LDR is shaded, then the circuit will be disconnected and the radio cannot work. Therefore it is necessary for the LDR to be shone by bright light so that this circuit is connected. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. Adjusting the variable resistor can change the volume. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

Wiring Sequence

207

Darkness activated FM radio receiver with volume control

7-10, 105-42-8, 84-45-43-15, 35-87-9-4, 3-88, 13-18, 17-86, 14-16-85, 46-41, 106-36-44

Complete all wiring connections as indicated in the sequence. Switch on the main switch. If the LDR is not shaded, then the radio cannot work. Therefore it is necessary for the LDR to be shaded so that this circuit is connected. If you press the button “select”, which is located at the left side of the panel, then it will perform a FM auto-search. The receiver will search for channel from lower end to upper end. It will stop searching when it finds a channel. You may press search again to let it search for another channel. You will have to press the “reset” button if the receiver has searched to the upper most channel and cannot find anything. Adjusting the variable resistor can change the volume. It is recommended to add a wire on the “FM. ANT”, which is located on the left side of the panel. The wire will act as an antenna. This will increase the strength of the radio signal received.

EXPERIMENT Wiring Sequence

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206

7-10, 36-42-8, 84-45-43-15, 106-87-9-4, 3-88, 13-18, 17-86, 14-16-85, 46-41, 105-35-44

EXPERIMENT

•

Touch control FM radio receiver with volume control

7-10, 53-42-8, 84-45-43-15, 106-87-9-4, 3-88, 13-18, 17-86, 14-16-85, 46-41, 105-52-44

EXPERIMENT

•

205

208

Simple microphone amplifier

7-10, 104-18, 9-50, 87-51-4, 8-84-102, 3-88, 17-86, 19-16-85-99, 103-29-25, 100-26, 20-3

Complete all wiring connections as indicated in the sequence. Switch on the main switch. You can tap the microphone and the speaker will produce tapping sound. By adjusting the variable resistor, the speaker volume can be adjusted. You can speak near the microphone so that the speaker will act like a loudspeaker.

P.38

EXPERIMENT Wiring Sequence

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Wiring Sequence

212

Bird chirping sound and flashing LED with volume control

8-50, 97-94-84-75-51, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 7-74-77-87-3

213

Cat meowing sound and flashing LED with volume control

8-50, 97-94-84-74-51, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 7-87-77-3

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make cat meowing sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT Wiring Sequence

214

Cuckoo calling sound and flashing LED with volume control

8-50, 51-84-94-97, 85-16, 105-98-93-78-76, 17-86, 18-106, 4-88, 7-87-77-74-3

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make cuckoo calling sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT Wiring Sequence

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Dog barking sound and flashing LED with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make bird chirping sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT

•

211

8-50, 97-94-84-76-75-51, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 7-77-87-3

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make dog barking sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT

•

Horse neighing sound and flashing LED with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make horse neighing sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

Wiring Sequence

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210

8-50, 97-94-84-74-75-51, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 7-87-77-3

EXPERIMENT

•

Rooster crowing sound and flashing LED with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make rooster crowing sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT

•

209

8-50, 51-75-84-94-97, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 7-77-87-3

215

Sheep baaing sound and flashing LED with volume control

8-50, 51-84-94-97, 85-16, 105-98-93-78-76, 17-86, 18-106, 4-88, 7-87-77-3

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make sheep baaing sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

P.39

EXPERIMENT

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make duck quacking sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT

Manual control musical doorbell and digital segment LED displaying “2”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Press the push switch. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “2”. When the music is finished, you can press the push switch again. Then the IC will be triggered again and play the next doorbell music with digital segment displaying “2”. There are a total of 7 doorbell music available.

EXPERIMENT

Wiring Sequence

219

Magnet control musical doorbell and digital segment LED displaying “2”

8-50, 51-84-97-55-80-68, 7-87-83-3, 85-16, 18-106, 17-86, 4-88, 105-98-81-58-56-57-59-61, 82-67

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Access the reed switch with the magnetic pole. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “2”. When the music is finished, you can access the reed switch with the magnetic pole again. Then the IC will be triggered again and play the next doorbell music with digital segment displaying “2”. There are a total of 7 doorbell music available.

EXPERIMENT

Wiring Sequence

•

218

8-50, 51-84-97-55-80-66, 7-87-83-3, 85-16, 18-106, 17-86, 4-88, 105-98-81-58-56-57-59-61, 82-65

Wiring Sequence

•

Frog croaking sound and flashing LED with volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The speaker will make frog croaking sound, and the LED will flash at the same time. You can adjust the volume by adjusting the variable resistor.

EXPERIMENT

•

217

8-50, 97-94-84-75-51, 85-16, 105-98-93-78, 17-86, 18-106, 4-88, 74-76, 7-87-77-3

Wiring Sequence

•

Duck quacking sound and flashing LED with volume control

8-50, 97-94-84-75-51, 85-16, 105-98-93-78-76, 17-86, 18-106, 4-88, 7-87-77-3

Wiring Sequence

•

216

220

Touch control musical doorbell and digital segment LED displaying “2”

8-50, 51-84-97-55-80-52, 7-87-83-3, 85-16, 18-106, 17-86, 4-88, 105-98-81-58-56-57-59-61, 82-53

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “2”. When the music is finished, you can use your finger to touch the touch plate again. Then the IC will be triggered again and play the next doorbell music with digital segment displaying “2”. There are a total of 7 doorbell music available. P.40

EXPERIMENT

Wiring Sequence

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221

Light control musical doorbell and digital segment LED displaying “2”

8-50, 51-84-97-55-80-36, 7-87-83-3, 85-16, 18-106, 17-86, 4-88, 105-98-81-58-56-57-59-61, 82-35

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Cover the LDR completely and then uncover it. You will hear musical doorbell from the speaker. At the same time the digital segment LED will display “2”. When the music is finished, you can cover the LDR completely and then uncover it again. Then the IC will be triggered again and play the next doorbell music with digital segment displaying “2”. There are a total of 7 doorbell music available.

EXPERIMENT

222

Wiring Sequence

8-50, 65-55-51-4, 78-62-59-58-57-54-3, 75-66, 7-77-98, 97-60

•

Manual control rooster crowing sound and digital segment LED displaying “H”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear rooster crowing sound from the speaker. At the same time the digital segment LED will display “H”. When the rooster crowing sound is finished, you can press the push switch again to repeat the experiment.

EXPERIMENT

223

Wiring Sequence

8-50, 67-55-51-4, 78-62-59-58-57-54-3, 75-68, 7-77-98, 97-60

•

Magnet control rooster crowing sound and digital segment LED displaying “H”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear rooster crowing sound from the speaker. At the same time the digital segment LED will display “H”. When the rooster crowing sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

224

Wiring Sequence

8-50, 52-55-51-4, 78-62-59-58-57-54-3, 75-53, 7-77-98, 97-60

•

Touch control rooster crowing sound and digital segment LED displaying “H”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear rooster crowing sound from the speaker. At the same time the digital segment LED will display “H”. When the rooster crowing sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

225

Wiring Sequence

8-50, 55-51-36-4, 78-62-59-58-57-54-3, 75-35, 7-77-98, 97-60

•

Light control rooster crowing sound and digital segment LED displaying “H”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear rooster crowing sound from the speaker. At the same time the digital segment LED will display “H”. When the rooster crowing sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

P.41

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear dog barking sound from the speaker. At the same time the digital segment LED will display “H”. When the dog barking sound is finished, you can press the push switch again to repeat the experiment.

Wiring Sequence

228

Touching control dog barking sound and digital segment LED displaying “H”

8-50, 55-52-51-4, 78-62-59-58-57-54-3, 76-75-53, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear dog barking sound from the speaker. At the same time the digital segment LED will display “H”. When the dog barking sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

229

Light control dog barking sound and digital segment LED displaying “H”

8-50, 55-51-36-4, 78-62-59-58-57-54-3, 76-75-35, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear dog barking sound from the speaker. At the same time the digital segment LED will display “H”. When the dog barking sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Magnet control dog barking sound and digital segment LED displaying “H”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear dog barking sound from the speaker. At the same time the digital segment LED will display “H”. When the dog barking sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

Wiring Sequence

•

227

8-50, 67-55-51-4, 78-62-59-58-57-54-3, 76-75-68, 7-77-98, 97-60

EXPERIMENT

•

Manual control dog barking sound and digital segment LED displaying “H”

8-50, 65-55-51-4, 78-62-59-58-57-54-3, 76-75-66, 7-77-98, 97-60

EXPERIMENT

•

226

230

Manual control bird chirping sound and digital segment LED displaying “P”

8-50, 65-55-51-4, 78-59-58-57-56-54-3, 75-66, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear bird chirping sound from the speaker. At the same time the digital segment LED will display “P”. When the bird chirping sound is finished, you can press the push switch again to repeat the experiment.

P.42

EXPERIMENT

231 Magnet control bird chirping sound and digital segment LED displaying “P”

Wiring Sequence

•

8-50, 67-55-51-4, 78-59-58-57-56-54-3, 75-68, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear bird chirping sound from the speaker. At the same time the digital segment LED will display “P”. When the bird chirping sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

232

Touch control bird chirping sound and digital segment LED displaying “P”

8-50, 55-52-51-4, 78-59-58-57-56-54-3, 75-53, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear bird chirping sound from the speaker. At the same time the digital segment LED will display “P”. When the bird chirping sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

233 Light control bird chirping sound and digital segment LED displaying “P”

Wiring Sequence

•

8-50, 55-51-36-4, 78-59-58-57-56-54-3, 75-35, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear bird chirping sound from the speaker. At the same time the digital segment LED will display “P”. When the bird chirping sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

234 Manual control cat meowing sound and digital segment LED displaying “I”

Wiring Sequence

•

8-50, 65-55-51-4, 78-59-54-3, 66-74, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear cat meowing sound from the speaker. At the same time the digital segment LED will display “I”. When the cat meowing sound is finished, you can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

235

Magnet control cat meowing sound and digital segment LED displaying “I”

8-50, 67-55-51-4, 78-59-54-3, 68-74, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear cat meowing sound from the speaker. At the same time the digital segment LED will display “I”. When the cat meowing sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

P.43

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear cat meowing sound from the speaker. At the same time the digital segment LED will display “I”. When the rooster crowing sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

Wiring Sequence

238

Manual control cuckoo calling sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-66-56-59-58-57-54-3, 76-65, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear cuckoo calling sound from the speaker. At the same time the digital segment LED will display “P”. When the cuckoo calling sound is finished, you can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

239

Magnet control cuckoo calling sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-67-56-59-58-57-54-3, 76-68, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear cuckoo calling sound from the speaker. At the same time the digital segment LED will display “P”. When the cuckoo calling sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Light control cat meowing sound and digital segment LED displaying “I”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear cat meowing sound from the speaker. At the same time the digital segment LED will display “I”. When the cat meowing sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

Wiring Sequence

•

237

8-50, 55-51-36-4, 78-59-54-3 35-74, 7-77-98, 97-60

EXPERIMENT

•

Touch control cat meowing sound and digital segment LED displaying “I”

8-50, 55-51-52-4, 78-59-54-3, 53-74, 7-77-98, 97-60

EXPERIMENT

•

236

240

Touch control cuckoo calling sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-56-59-58-57-54-52-3, 76-53, 7-74-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear cuckoo calling sound from the speaker. At the same time the digital segment LED will display “P”. When the cuckoo calling sound is finished, you can use your finger to touch the touch plate again to repeat the experiment. P.44

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear cuckoo calling sound from the speaker. At the same time the digital segment LED will display “P”. When the cuckoo calling sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

Wiring Sequence

243

Magnet control sheep baaing sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-67-56-59-58-57-54-3, 76-68, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear sheep baaing sound from the speaker. At the same time the digital segment LED will display “P”. When the sheep baaing sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

Wiring Sequence

244

Touch control sheep baaing sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-56-59-58-57-54-52-3, 76-53, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear sheep baaing sound from the speaker. At the same time the digital segment LED will display “P”. When the sheep baaing sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control sheep baaing sound and digital segment LED displaying “P”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear sheep baaing sound from the speaker. At the same time the digital segment LED will display “P”. When the sheep baaing sound is finished, you can press the push switch again to repeat the experiment.

Wiring Sequence

•

242

8-50, 55-51-4, 78-66-56-59-58-57-54-3, 76-65, 7-77-98, 97-60

EXPERIMENT

•

Light control cuckoo calling sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-56-59-58-57-54-36-3, 76-35, 7-74-77-98, 97-60

EXPERIMENT

•

241

245

Light control sheep baaing sound and digital segment LED displaying “P”

8-50, 55-51-4, 78-56-59-58-57-54-36-3, 76-35, 7-77-98, 97-60

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear sheep baaing sound from the speaker. At the same time the digital segment LED will display “P”. When the sheep baaing sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment. P.45

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear duck quacking sound from the speaker. At the same time the digital segment LED will display “L”. When the duck quacking sound is finished, you can press the push switch again to repeat the experiment.

Wiring Sequence

248

Touch control duck quacking sound and digital segment LED displaying “L”

8-50, 55-51-4, 78-52-60-3, 75-76-53, 98-77-7, 97-61-59-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear duck quacking sound from the speaker. At the same time the digital segment LED will display “L”. When the duck quacking sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

249

Light control duck quacking sound and digital segment LED displaying “L”

8-50, 55-51-4, 78-60-36-3, 35-75-76, 98-77-7, 97-61-59-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear duck quacking sound from the speaker. At the same time the digital segment LED will display “L”. When the duck quacking sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Magnet control duck quacking sound and digital segment LED displaying “L”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear duck quacking sound from the speaker. At the same time the digital segment LED will display “L”. When the duck quacking sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

Wiring Sequence

•

247

8-50, 55-51-4, 78-67-60-3, 68-75-76, 98-77-7, 97-61-59-54

EXPERIMENT

•

Manual control duck quacking sound and digital segment LED displaying “L”

8-50, 55-51-4, 78-66-60-3, 65-75-76, 98-77-7, 97-61-59-54

EXPERIMENT

•

246

250

Manual control horse neighing sound and digital segment LED displaying “L”

8-50, 65-55-51-4, 78-60-3, 66-74-75, 98-77-7, 97-61-59-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear horse neighing sound from the speaker. At the same time the digital segment LED will display “L”. When the horse neighing sound is finished, you can press the push switch again to repeat the experiment.

P.46

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear horse neighing sound from the speaker. At the same time the digital segment LED will display “L”. When the horse neighing sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment.

Wiring Sequence

253

Light control horse neighing sound and digital segment LED displaying “L”

8-50, 55-51-36-4, 78-60-3, 35-74-75, 98-77-7, 97-61-59-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear horse neighing sound from the speaker. At the same time the digital segment LED will display “L”. When the horse neighing sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

254

Manual control frog croaking sound and digital segment LED displaying “U”

8-50, 65-55-51-4 , 78-60-3, 66-75, 74-76, 98-77-7, 97-62-61-59-58-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Press the push switch. You will hear frog croaking sound from the speaker. At the same time the digital segment LED will display “U”. When the frog croaking sound is finished, you can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Touch control horse neighing sound and digital segment LED displaying “L”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear horse neighing sound from the speaker. At the same time the digital segment LED will display “L”. When the horse neighing sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

Wiring Sequence

•

252

8-50, 55-52-51-4, 78-60-3, 53-74-75, 98-77-7, 97-61-59-54

EXPERIMENT

•

Magnet control horse neighing sound and digital segment LED displaying “L”

8-50, 67-55-51-4, 78-60-3, 68-74-75, 98-77-7, 97-61-59-54

EXPERIMENT

•

251

255

Magnet control frog croaking sound and digital segment LED displaying “U”

8-50, 67-55-51-4, 78-60-3, 68-75, 74-76, 98-77-7, 97-62-61-59-58-54

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Access the reed switch with the magnetic pole. You will hear frog croaking sound from the speaker. At the same time the digital segment LED will display “U”. When the frog croaking sound is finished, you can access the reed switch with the magnetic pole again to repeat the experiment. P.47

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Use your finger to touch the touch plate. Note that if there is no response, you may have to dampen your finger and try again. You will hear frog croaking sound from the speaker. At the same time the digital segment LED will display “U”. When the frog croaking sound is finished, you can use your finger to touch the touch plate again to repeat the experiment.

Wiring Sequence

Light control frog croaking sound and digital segment LED displaying “U”

Complete all wiring connections as indicated in the sequence. Switch on the main switch. The dot at the bottom right corner of the digital segment LED will light up. Cover the LDR completely and then uncover it. You will hear frog croaking sound from the speaker. At the same time the digital segment LED will display “U”. When the frog croaking sound is finished, you can cover the LDR completely and then uncover it again to repeat the experiment.

Wiring Sequence

258

Manual control frog croaking sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-65, 74-76

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make frog croaking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the frog croaking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the frog croaking sound will be back to normal as before. You can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

257

8-50, 55-51-36-4, 78-60-3, 35-75, 74-76, 98-77-7, 97-62-61-59-58-54

EXPERIMENT

•

Touch control frog croaking sound and digital segment LED displaying “U”

8-50, 55-52-51-4, 78-60-3, 53-75, 74-76, 98-77-7, 97-62-61-59-58-54

EXPERIMENT

•

256

259

Manual control frog croaking sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-67,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make frog croaking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the frog croaking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the frog croaking sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment. P.48

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make frog croaking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the frog croaking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the frog croaking sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

Wiring Sequence

261

Manual control frog croaking sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35, 74-76

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make frog croaking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the frog croaking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the frog croaking sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control frog croaking sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52,

EXPERIMENT

•

260

262

Manual control rooster crowing sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-65

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make rooster crowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the rooster crowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the rooster crowing sound will be back to normal as before. You can press the push switch again to repeat the experiment.

P.49

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make rooster crowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the rooster crowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the rooster crowing sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

Wiring Sequence

264

Manual control rooster crowing sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make rooster crowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the rooster crowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the rooster crowing sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control rooster crowing sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

EXPERIMENT

•

263

265

Manual control rooster crowing sound with flashing LED plus light control musical doorbell with LED and

8-50, 51-36-84-98-96-94-75-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make rooster crowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the rooster crowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the rooster crowing sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

P.50

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make dog barking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the dog barking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the dog barking sound will be back to normal as before. You can press the push switch again to repeat the experiment.

Wiring Sequence

267

Manual control dog barking sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-75-76-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-67

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make dog barking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the dog barking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the dog barking sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control dog barking sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-75-76-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-65

EXPERIMENT

•

266

268

Manual control dog barking sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-75-76-80, 7-87-77-83-3, 85-16, 97-95-78-27,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make dog barking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the dog barking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the dog barking sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

P.51

EXPERIMENT

Wiring Sequence

•

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make dog barking sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the dog barking sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the dog barking sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

270

Manual control horse neighing sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-75-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Wiring Sequence

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make horse neighing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the horse neighing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the horse neighing sound will be back to normal as before. You can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control dog barking sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-75-76-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

EXPERIMENT

•

269

271

Manual control horse neighing sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-75-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-67

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make horse neighing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the horse neighing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the horse neighing sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

P.52

EXPERIMENT

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make horse neighing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the horse neighing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the horse neighing sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

273

Manual control horse neighing sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-75-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make horse neighing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the horse neighing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the horse neighing sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control horse neighing sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-75-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

Wiring Sequence

•

272

274

Manual control bird chirping sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-75-80, 7-87-77-74-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make bird chirping sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the bird chirping sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the bird chirping sound will be back to normal as before. You can press the push switch again to repeat the experiment.

P.53

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

8-50, 51-68-84-98-96-94-75-80, 7-87-77-74-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-67

276

Manual control bird chirping sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-75-80, 7-87-77-74-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make bird chirping sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the bird chirping sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the bird chirping sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control bird chirping sound with flashing LED plus magnet control musical doorbell with LED and master volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make bird chirping sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the bird chirping sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the bird chirping sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

•

275

277

Manual control bird chirping sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-75-80, 7-87-77-74-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make bird chirping sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the bird chirping sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the bird chirping sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

P.54

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

8-50, 51-66-84-98-96-94-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-65

279

Manual control cat meowing sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cat meowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the cat meowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cat meowing sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control cat meowing sound with flashing LED plus manual control musical doorbell with LED and master volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cat meowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the cat meowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cat meowing sound will be back to normal as before. You can press the push switch again to repeat the experiment.

EXPERIMENT

•

278

280

Manual control cat meowing sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cat meowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the cat meowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cat meowing sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

P.55

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

8-50, 51-36-84-98-96-94-74-80, 7-87-77-83-3, 85-16, 97-95-78-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

282

Manual control cuckoo calling sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-80, 7-87-77-74-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-65

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cuckoo calling sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the cuckoo calling sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cuckoo calling sound will be back to normal as before. You can press the push switch again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control cat meowing sound with flashing LED plus light control musical doorbell with LED and master volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cat meowing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the cat meowing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cat meowing sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

•

281

283

Manual control cuckoo calling sound with flashing LED plus magnet control musical doorbell with LED and master volume control

8-50, 51-68-84-98-96-94-80, 7-87-77-74-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cuckoo calling sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the cuckoo calling sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cuckoo calling sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

P.56

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

8-50, 51-53-84-98-96-94-80, 7-87-77-74-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

285

Manual control cuckoo calling sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-80, 7-87-77-74-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cuckoo calling sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the cuckoo calling sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cuckoo calling sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control cuckoo calling sound with flashing LED plus touch control musical doorbell with LED and master volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make cuckoo calling sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the cuckoo calling sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the cuckoo calling sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

•

284

286

Manual control sheep baaing sound with flashing LED plus manual control musical doorbell with LED and master volume control

8-50, 51-66-84-98-96-94-80, 7-87-77-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make sheep baaing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you press the push switch, the speaker will also make doorbell music at the same time; the sheep baaing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the sheep baaing sound will be back to normal as before. You can press the push switch again to repeat the experiment.

P.57

EXPERIMENT

Wiring Sequence

•

Wiring Sequence

8-50, 51-68-84-98-96-94-80, 7-87-77-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88,

288

Manual control sheep baaing sound with flashing LED plus touch control musical doorbell with LED and master volume control

8-50, 51-53-84-98-96-94-80, 7-87-77-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-52

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make sheep baaing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you use your finger to touch the touch plate, the speaker will also make doorbell music at the same time; the sheep baaing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. Note that if there is no response, you may have to dampen your finger and try again. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the sheep baaing sound will be back to normal as before. You can use your finger to touch the touch plate again to repeat the experiment.

EXPERIMENT

Wiring Sequence

•

Manual control sheep baaing sound with flashing LED plus magnet control musical doorbell with LED and master volume control

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make sheep baaing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you access the reed switch with the magnetic pole, the speaker will also make doorbell music at the same time; the sheep baaing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the sheep baaing sound will be back to normal as before. You can access the reed switch with the magnetic pole again to repeat the experiment.

EXPERIMENT

•

287

289

Manual control sheep baaing sound with flashing LED plus light control musical doorbell with LED and master volume control

8-50, 51-36-84-98-96-94-80, 7-87-77-83-3, 85-16, 97-95-78-76-27, 105-29-28, 30-81-93, 18-106, 17-86, 4-88, 82-35

Complete all wiring connections as indicated in the sequence. Switch on the main switch. Speaker will make sheep baaing sound, and green LED will flash to the rhythm of it. You can adjust the variable resistor to adjust the volume. And then if you cover the LDR completely and then uncover it, the speaker will also make doorbell music at the same time; the sheep baaing sound will be lowered down and covered by the louder doorbell music. Red LED will also light up during the doorbell music period. You can adjust the variable resistor to adjust the volume of both of them. When the doorbell music is finished, the red LED will go out, and the sheep baaing sound will be back to normal as before. You can cover the LDR completely and then uncover it again to repeat the experiment.

P.58

GLOSSARY Amplifier - An electronic circuit that amplifies the signal that is sent to it. The amplifying component can be a transistor, vacuum tube or appropriate magnetic device. Battery - A source of energ.y It contains active materials which will be irreversibly converted during the chemical reaction. Capacitance – A measurement of the capacity of a capacitor for storing electric charge. Capacitor - A device consists of two conductors that are separated by an insulator. It is designed for storing electrical charge or as a filter in the circuit. Circuit – A system of interconnected components / devices such as power source, resistors, capacitors and transistors…etc. Diode – A device which is used in electric circuitry to allow an electric current to flow in single direction and block it in the reverse direction. IC (Integrated Circuit) – A small electronic device made of a semiconductor material and is used for a variety of devices, including microprocessors, electronic equipment and automobiles. LDR (Light Dependent Resistor) – A device with a layer of cadmium sulphide (CdS) material that changes resistance according to the amount of light shining on it. LED (Light Emitting Diode) – A diode emits light when current is passing through it. Meter – An instrument which is used to measure electricity. Microphone - A device converts sound into an electrical or acoustic signal Motor – A device converts electrical energy to mechanical motion. Reed Switch –A magnetically controlled switch made to open and close a circuit. Resistance – A measurement of the degree to which an object opposes an electrical current through it. Resistor - A device designed for possessing resistance. Seven-Segment LED Display – A display device which is commonly used in electronic circuits or equipment as decimal numeric display or indicator. Speaker - A device that changes electrical signals to sound. Switch - A device for opening and closing power source to a circuit Transistor - A semi-conductor material device that amplifies a signal and opens or closes a circuit. Truth Table – It is a mathematical table used to logically compute the values of logical explication and as a decision procedure. Variable Resistor – A kind of resistor and a device of adjustable resistance in the electronic / electrical circuit. Wire – A component which is used in the electronic / electrical industry as a conductor that is used to carry electricity or signals. If at any time in the future you should need to dispose of this product please note that waste electrical products should not be disposed of with household waste.Please recycle where facilities exist. Check with your local authority or retailer forrecycling advice. (Waste Electrical and Electronic Equipment Directive) An educational product by Mexus Education Pvt. Ltd. (formerly Axiom Education Pvt. Ltd.) Regd. Off.: No. 135 / 2 / A, Muktanand Marg, Chala, Vapi-396191 (Gujarat) Mumbai Office: 512, Midas, Sahar Plaza Complex, M V Road, J.B. Nagar, Andheri (E), Mumbai 400 059. For Customer Care Contact: +91 922 322 4044 Email: help@iken.in For sales enquiry: sales@iken.in P.59

Notes