Propeller Display Of Message By Virtual Leds
Propeller Display Of Message By Virtual Leds Introduction Propeller is a term associated with a circular rotating object. As this needs to rotate whole circuit assembly, there must be some prime mover attached to it. So, the term ‘Propeller’ is used. It uses bright light emitting diodes for displaying the characters and symbols on its assembly. propeller led display is the right name given to this project. It is the phenomenon which is related to vision capability of the human eye by which an afterimage is thought to persist for approximately 1/25th of a second.
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Propeller Display Of Message By Virtual Leds
So, if someone is observing the images at a rate of 25 images per second, then they appear to be continuous. Propeller runs on a single battery with wall adapter facility. The best example of this property is the red circle we observe when we rotate the firecracker or incense stick in a circle.
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Propeller Display Of Message By Virtual Leds Block Diagram
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Propeller Display Of Message By Virtual Leds
Working Propeller Display of Message comprises of the circular display of a string of LEDs. LED string mounted on a printed circuit board are duly interfaced to a microcontroller by using a high-speed motor and some mechanical assembly. An appropriate program while executed drives a pair of a single line LEDs in space multiplexing mode. It displays some message and or a clock timing taking advantage of persistence of vision of the human eye. http://www.edgefxkits.com/
Propeller Display Of Message By Virtual Leds ďƒ˜ Without the single line of LEDs in space multiplexing mode if one would have to display a message, number of LEDs as high as 525 would have been used. ďƒ˜ The synchronizing is be implemented through software.
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Propeller Display Of Message By Virtual Leds
Hardware Requirements Microcontroller, Sensors. Resistors, Capacitors, Diodes. Transformer, Voltage Regulator. Transistors, Leds. High Speed Motor.
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Propeller Display Of Message By Virtual Leds
Software Requirements Keil compiler Language: Embedded C or Assembly.
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Propeller Display Of Message By Virtual Leds
Power Supply
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Propeller Display Of Message By Virtual Leds
The 230V AC supply is first stepped down to 12V AC using a step-down transformer. It is then converted to DC using the bridge rectifier. The AC ripples are filtered out by using a capacitor and given to the input pin of the voltage regulator 7805. At output pin of this regulator, we get a constant 5V DC which is used for MC and other ICs in this project.
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Propeller Display Of Message By Virtual Leds Features Of Microcontroller 8K Bytes Of In-system Programmable (ISP) Flash Memory 4.0V To 5.5V Operating Range Fully Static Operation: 0 Hz To 33 MHz 256 X 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Full Duplex UART Serial Channel
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Propeller Display Of Message By Virtual Leds
Bob Blick's Propeller Clock Project Bob Blick made the clock spinning on a piece of perf board. The power is provided from the spinning armature of a plain DC motor. But this Project has not got viability though Bob was Successful in Displaying the Numeric Digit on a propeller Display.
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Propeller Display Of Message By Virtual Leds
Applications ďƒ˜ Applications can find their way to cost effective solutions for large public displays, information systems. ďƒ˜ It can directly replace Railway station information displays, bus stands and many more places.
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Propeller Display Of Message By Virtual Leds
Future scope Can be integrated with GSM such that ANY Message from the End-user with a phone can display the text by merely sending SMS. It can be made possible to display the clock RTC on the display.
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Propeller Display Of Message By Virtual Leds
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