Tekie
Robotics Plus
Acknowledgements
Academic Authors: Neha Verma, Ayushi Jain, Anuj Gupta, Simran Singh
Creative Directors: Bhavna Tripathi, Mangal Singh Rana, Satish
Book Production: Rakesh Kumar Singh, Sanjay Kumar Goel
Project Lead: Jatinder Kaur
VP, Learning: Abhishek Bhatnagar
All products and brand names used in this book are trademarks, registered trademarks or trade names of their respective owners.
© Uolo EdTech Private Limited
First impression 2024
Second impression 2025
This book is sold subject to the condition that it shall not by way of trade or otherwise, be lent, resold, hired out, or otherwise circulated without the publisher’s prior written consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser and without limiting the rights under copyright reserved above, no part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of both the copyright owner and the above-mentioned publisher of this book.
Book Title: Tekie Robotics Plus 5
ISBN: 978-81-983027-8-6
Published by Uolo EdTech Private Limited
Corporate Office Address:
85, Sector 44, Gurugram, Haryana 122003
CIN: U74999DL2017PTC322986
Illustrations and images: www.shutterstock.com, www.stock.adobe.com and www.freepik.com
All suggested use of the internet should be under adult supervision.
Robotics
What is Robotics?
Robotics is the study and creation of robots. Robots are machines that can perform various tasks. They are built using parts like metal, wires, and circuits, and programmed with special instructions to tell them what to do.
Some robots look like humans, while others are designed to work in specific places, like factories, hospitals, or even outer space! For example, a robot might assemble cars in a factory or explore the surface of Mars where humans cannot go easily.
Robots can sense their surroundings using sensors. These sensors act like the robot’s eyes, ears, and hands, helping it understand distance, temperature, or touch. Once the robot knows its surroundings, it can make decisions based on its programming.
The field of robotics combines science, technology, engineering, and mathematics (STEM) to solve problems and create amazing inventions. It is an exciting way to bring creativity and technology together!
Components of Robots
Robots are made up of different parts that work together to help them move, sense, and do tasks. These parts are grouped into three main types: mechanical, electronic, and coding interface. Let us learn about them.
Mechanical Parts
Mechanical parts are like the bones and muscles of a robot. They include wheels, gears, motors, and arms. These parts help the robot move, pick up things, or spin. For example, wheels let a robot roll around, and motors make robots move by turning wheels, spinning gears, or lifting arms.
Electronic Parts
The electronic parts are like the robot’s brain and nerves. They include circuits, sensors, and batteries. These parts help the robot think and sense its surroundings. Sensors act like eyes, ears, or even a nose for the robot, allowing it to detect light, sound, or obstacles. The battery gives the robot the power it needs to work.
Coding Interface
Coding is how we talk to robots and tell them what to do. Coding means writing instructions for them to follow. The coding interface is the program or app used to give these instructions. Once coded, the robot can move in a specific direction, stop when it sees something, or even dance.
By combining these three parts—mechanical, electronic, and coding—robots come to life and do amazing things.
Robotics Advanced Kit
About Robotics Advanced Kit 1
The Robotics Advanced Kit (RAK) is a comprehensive tool for young innovators who are curious to explore the subject of robotics. It features the Robotics FULL 2.0 BLE Brain, which powers the kit’s projects. The kit also includes exciting projects, thereby encouraging creativity and problem-solving in students. With hands-on components and coding opportunities, RAK makes robotics fun-filled and accessible, inspiring students to think critically about robotics and innovate its programming. Let us explore its various components.
Electronics Parts
9.
• Long Connecting Cable × 1
• USB Cable × 1
Construction Parts
Plastic Parts
1. FULL 2.0 Brain × 1 BLE
High Speed Motor × 2
High Torque Motor × 1
IR Sensor × 2
5. Touch Sensor × 1
Avishkaar Rechargeable Battery × 1
Adapter × 1
Manual Remote × 1
• Short Connecting Cable × 4
10. Male to Male DC Jack × 1
1. Big Wheels ×
Metal Parts
A comprehensive metal design system allows you to make from easy to complex mechanical bot designs.
The Motors
Let's understand how the motors work.
Robots move in different directions by the combination of the rotation from each wheel. For example: Robot Movement
Basics of Building
Let’s understand some basics of building:
Tightening Screws:
Tightening Axle Lock:
Tighten (Rotate Clockwise)
Tighten (Rotate Clockwise)
Tightening a Motor to a Plate:
Loosen (Rotate Anti-Clockwise)
Loosen (Rotate Anti-Clockwise)
About the Brain
Robotics FULL 2.0 BLE Brain
Let’s understand how the Full 2.0 Brain works.
Let’s understand how the Full 2.0 BLE Brain works.
the Ultrasonic Sensor to the brain.
This port powers the brain using the battery via Male to Male DC Jack.
Building a Remote Control Car
1 Insert the axle lock and the 3.5” axles into the high-speed motors, as shown.
2 After attaching the axles to both motors, screw them to the chassis using the 6mm bolts, as shown.
3 Repeat the previous step to attach the second high-speed motor to the other side of the chassis.
4 Add a filler to the axle, then add the wheel and lastly add another axle lock. Do this for both axles.
5 Screw a 7.5 inch rectangular plate using 12 mm bolts with the first two holes of both the right and left sides of the chassis
6 Attach two U-Beams, one on top of the other using 6mm bolts. Then, screw the Caster wheel to both U-Beams using 2 K-nuts and 6mm bolts, as shown below.
7 Attach the previous assembly to the chassis as shown, with 12 mm bolts.
8 Screw the Battery at the bottom of the chassis using 6mm bolts as shown.
9
Screw the Brain to the chassis using 6mm bolts. Connect the Brain to the Battery using Male to Male DC Jack wire.
About Coding Interface
Connect the left motor to the "M4" port and the right motor to the "M3" port of the Brain using the short connecting cables.
The coding interface serves as the central hub for your kit, acting as an Integrated Development Environment (IDE) that enables you to write code for all of your experiments. This code is then transferred to the hardware.
The coding interface consists of the following components:
1. Workspace Area: This is where you drag blocks for the code you want to write.
2. Blocks Panel: The blocks from the Blocks Panel help make your code.
3. Share Code: The Share Code option in the File drop-down menu generates a link for the project to share with others.
4. Control Buttons: The Control Buttons consist of Save, Compile, and Connect buttons.
• Save Button: The Save button helps save your code.
• Compile Button: The Compile button helps compile your code.
• Connect Button: The Connect button helps burn your code to the hardware.
5. Arena: This is where you can see the output.
6. Buttons: The buttons help move the bot front, back, left, or right. The buttons also help rotate the bot clockwise and anticlockwise in the virtual arena.
7. Play Button: The Play button runs the code.
8. Reset Button: The Reset button resets the arena.
Burning Your Code
Burning means loading your code into the hardware. This process, mainly, has the phases as shown:
Arrange the blocks to create the code Save the code
Compile the code Burn the code
In case of error, recheck the code.
1. Once you have completed your experiment, connect the bot to a PC/Laptop using a USB cable or Bluetooth.
2. Save and compile your code by clicking on the Save and Compile buttons, respectively.
3. Now, click on Connect.
4. Click on the USB Connect option or the BLE Connect (Bluetooth) option.
5. Click on the Connect Device button, and a small window will appear. Thereafter, select your connected device, and then click on Connect.
6. Now click on Burn to write your program into the bot.
7. You have successfully written your code into the hardware. Now you can experiment on the bot.
Experiment 1: Bot Movements Using Motor Control 2
Objective
Learn how to control a robot by making it move forward, backwards, left, and right using motors. This helps in understanding the basics of how robots work and is a great start to learning robotics!
Background
In this experiment, the concept of time delay is used to suspend the execution of a program for a particular time. Let us understand this by looking at the process of cooking a dish in the microwave.
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program.
3. Drag the Move Motor at the block from the Motor category and drop it inside the My Program block.
4. Configure the motor at Port4 (Advance) as clockwise by selecting the Clockwise option from the drop-down.
5. Select the speed of the motor as High, Medium, or Slow from the Speed drop-down.
6. Similarly, drag another Move Motor at the block and drop it below the previous block.
7. Select the Port3 (Advance) option from the drop-down menu.
8. Configure the motor at Port3 as anticlockwise by selecting the Anticlockwise option from the drop-down menu.
Select the speed of your choice from the Speed drop-down menu.
10. Drag the Time block from the Control category and drop it below the second Move Motor at the block.
11. Type "2000" in the value box of the block. This will allow the forward movement of the motor for 2000 milliseconds or 2 seconds.
12. To move the bot forward for infinite time, use the Repeat while block from the Loops category with the Move Motor at blocks.
13. Similarly, to turn the bot backwards, configure the motor at Port4 as Anticlockwise and Port3 as Clockwise by making the respective selections from the drop-down menus.
14. To move the bot backwards for infinite time, use the Repeat while block from the Loops category with the Move Motor at blocks.
15. To turn the bot to the right, configure the motor at Port4 and Port3 as Anticlockwise and add a delay of 1100 ms by adding a Time block.
16. To turn the bot to the left, configure the motor at Port4 as Clockwise and Port3 as Clockwise too.
Note: When you turn the bot left or right, the time value may vary from system to system. Therefore, to make a 90 degree turn, you can configure the time value accordingly.
17. Give a name to your program, save it, and then compile it.
18. Now, the program is ready to burn on the RAK.
Scan QR code to view output
A. Tick () the Correct Option.
1 Which block is used to start your program?
a My Program
c Begin Program
b Start Program
d Your Program
2 The execution of all the blocks in a code occur .
a timely
c in a loop
b step by step
d with delay
3 In which direction should the motors rotate to turn the robot to the left?
a Both motors clockwise
c Left motor clockwise, right motor anticlockwise
B. Answer the Following.
b Both motors anticlockwise
d Left motor anticlockwise, right motor clockwise
1 How should the motors be configured to move the robot in the right direction?
2 What is the use of the “Repeat while” block?
C. Apply Your Learning.
1 Where can you see the applications of a moving robot in daily life?
2 What will happen in your project if you don’t use the “Repeat while” block?
3 Experiment 2: Drawing Shapes
Objective
Make your robot move to create shapes like squares and rectangles to practice its movements.
Background
This experiment is based on the concept of time delay as discussed in the previous experiment.
Let’s Build
• Attach a pen to the RC bot as shown here, using zip-ties.
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program.
3. Drag the set pen block from the Robot category and drop it inside the My Program block.
4. This block is set to ON by default. Select any colour of your choice from the colour box.
5. Drag and drop two Move Motor at the blocks from the Motor category. Configure the first Move Motor at block at Port4 (Advance) as clockwise by selecting the Clockwise option from the drop-down.
6. For the second Move Motor at block, select Port3 (Advance) from the drop-down menu. Configure this block as anticlockwise by selecting the Anticlockwise option from the drop-down.
7. Drag the Time block from the Control category and drop it below the second Move Motor at block. Type "4000" in the value box of the block. This will allow the forward movement of the motor for 4000 milliseconds or 4 seconds.
8. Now, drag two Move Motor at the blocks for Port4 (Advance) and Port3 (Advance) to Stop the two motors. This will instruct the bot to stop.
9. Now, drag and drop the Time block to stop the bot for "1000" milliseconds.
10. Now, configure both motors in Anticlockwise direction. Also, drag and drop the Time block to move the bot right for a specified time.
11. Post taking a right, stop the bot for 1000 milliseconds.
Note: When you turn the bot left or right, the time value may vary from system to system. Therefore, to make a 90 degree turn, you can configure the time value accordingly.
12. Repeat the above steps 5 to 11 (to move the bot forward stop, turn right, and then stop again) till you create all four sides of the square shape. The final code should look like this:
13. Give a name to your program, save it, and then compile it.
14. Now, the program is ready to burn on the RAK.
Scan QR code to view output
A. Tick () the Correct Option.
1 Which block is used to add a delay in the movement of the robot?
a move robot in b stop robot for time
c turn robot in d stop robot
2 How many times will your robot move and take turns to make a square?
a 4 b 5
c 6
3 What is the purpose of the “set pen” block?
a To draw shapes
c To stop the robot
B. Answer the Following.
1 What is the default value of the “set pen” block?
7
b To make the robot move
d To turn the robot
2 Which block is required to stop the motors?
C. Apply Your Learning.
1 Can you draw any other shape with the robot? If possible, write the code.
2 Recreate the program using the “Repeat while” block and test it on the RAK.
Experiment 3: Edge Avoider 4
Objective
Using IR sensors, students will program their robots to smartly detect and avoid the edges of elevated platforms. This activity strengthens their understanding of sensor-based navigation while promoting problem-solving skills in practical scenarios.
Things Around Us
The concept of edge avoider is mostly used in the automatic vacuum cleaners.
Background
In this experiment, the following concepts are used:
1. Variables
• Variables are used to store information to be referenced and manipulated in a computer program.
• Variables in coding are not just static values; they also provide a way of labelling data with a descriptive name, so our programs can be understood more clearly. This data can then be used throughout your program. For example, i_count is the name of a variable.
2. Conditionals
• Human beings (and other animals) make decisions all the time that affect their lives, for eg. a. "Should I eat one cookie or two?" b. "Should I play cricket or badminton?"
• Similarly, to make decisions and carry out actions accordingly, in our code, we use conditionals.
3. If block
• Conditional blocks have conditions, and the program’s flow is based on whether the condition is true or false.
• To apply conditions in code, use the if block. The if block has else if and else blocks.
• If the condition given in the if block is true, then the set of code is executed; otherwise, the code given in else if or else block is executed.
4. IR Sensor
• An infrared (IR) sensor is an electronic device that measures and detects infrared radiation in its surrounding environment. Everything around us, including our bodies and objects, gives off heat in the form of infrared radiation. Warmer objects emit more infrared radiation than cooler ones.
• In the IR sensor, the sensor state is high when a reflective object is in front of it. Black or dark-coloured objects do not reflect the IR rays.
Let’s Build
After creating the RC car, follow the given steps to create your Edge Avoider robot:
1 Connect the 7.5” U-Beam to the 2.5” U-Beam in the RC Car assembly using 12mm Bolts and K-Nuts.
2 Connect the IR Sensor to the 7.5” U-Beam using a Bolt.
3 Finally, the assembly for the Edge Avoider robot looks like the one shown.
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks inside this occurs step by step.
3. Drag the Repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. By default, the loop value is set as true.
4. Click on the Variables category.
5. Click on the Create Variable button. A pop-up box appears.
• Enter a suitable variable name in the New variable name box like IR_Sensor.
• Click on the OK button. This will create a variable to store the data of the IR sensor value received from the sensor.
6. Drag and drop the set to block from the Variables category and place it inside the Repeat while block.
7. Then drag the Read IR Sensor at block from the Sensor category and place it next to the set to block. Set the value of the Read IR Sensor at block as Port5 (Advance).
8. Drag the if block from the Control category and place it below the set to block.
9. Click on the settings icon of the if block. A pop-up box appears.
10. Drag the else block and place it below the if block in the pop-up box (refer to the image below).
11. Again, click on the settings icon to hide the pop-up box.
12. Define the condition for the if block using the block from the Control category.
13. Drag the IR_Sensor block from the Variables category and drop it in the left value box of the block.
14. Select the '>' sign from the drop-down list of the block.
15. Drag the block from the Math category and drop inside the right value box.
16. Type '400' in place of 0. If the value of the IR_Sensor variable is greater than 400, i.e., the IR Sensor senses the object, blocks under the if block will be executed, otherwise the blocks under the else block will be executed.
17. Drag and drop the Print Data block in the do part of the if block. Drag the empty Text Box block from the Text category and drop it inside the Print Data block. Type “Moving forward” in the Text Box block.
18. Now, we have to set both the motors to move in the forward direction when there is a surface below. For this, drag and drop two Move Motor at blocks from the Motor category. Configure the Motor at Port4 (Advance) as Clockwise and Port3 (Advance) as Anticlockwise.
19. Set the speed of both the motors to Medium.
20. For the else part, drag and drop the Print Data block in the do part of the if block. Drag the empty Text Box block from the Text category and drop it inside the Print Data block. Type “Edge detected” in the Text Box block.
21. Set both motors to Stop by dragging and dropping the Move Motor at blocks.
22. Also drag and drop the Time block from the Control category to instruct the bot to stop for 500 milliseconds when there is no object or surface detected below.
23. Set both motors to move backwards followed by left direction (you can turn the bot to any direction as you wish). This will instruct the bot to move back and then left when no object or surface is detected. Adjust the value in the Time block as shown.
24. Now, set both the motors to Stop.
25. Give a name to your program, save it, and then compile it.
26. Now, the program is ready to burn on the RAK.
Scan
QR code to view output
Exercise
A. Tick () the Correct Option.
1 What does an IR sensor do when a reflective object is close to it?
a Changes the LED to red
c Sets the sensor state to HIGH
2 Which block is used to apply conditions in code?
a Repeat while block
c if block
B. Answer the Following.
1 What are variables used for in a program?
b Stops the motor
d Starts the program
b Move Motor block
d My Program block
2 How does the “if” block help in decision-making in code?
C. Apply Your Learning.
1 Imagine you are programming a robot to avoid puddles on the floor. Describe how you would use an IR sensor to detect puddles and make the robot change direction.
2 If your robot’s IR sensor detects an edge, how would you program it to stop and turn safely?
Experiment 4: Sensor Car 5
Objective
Students will use both IR and touch sensors to program their robots. The robots will stop when they detect something with the IR sensor. When the touch sensor is pressed, the robot will turn right. This experiment helps students learn how sensors work together and how to control their robots.
Background
1. IR Sensor
• An infrared (IR) sensor is an electronic device that measures and detects infrared radiation in its surrounding environment. Everything around us, including our bodies and objects, gives off heat in the form of infrared radiation. Warmer objects emit more infrared radiation than cooler ones.
• In the IR Sensor, the sensor state is high when a reflective object is in front of it. Black or dark-coloured objects do not reflect IR rays.
2. Touch Sensor
• Touch sensor works like a push button or a limit switch. It simply gets triggered when it is touched or pressed.
• In a Touch sensor, the sensor state is HIGH when the sensor is pushed with any object.
Let’s Build
1 Attach IR Sensor to the front on holes 1 and 2 in row 4 of the Chassis using 6mm bolts.
2 Connect the IR Sensor to port S5 of the Brain.
3 Attach the Touch Sensor to the side using 6mm bolts and connect it to port S4 of the brain.
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks inside this occurs step by step.
3. Drag the Repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. By default, the loop value is set to true.
4. Click on the Variables category.
5. Click on the Create Variable button. A pop-up box appears.
• Enter a suitable variable name, such as "IR_Sensor ".
• Click on the OK button. This will create the IR_Sensor variable to store the data of the IR sensor value received from the sensor.
• Similarly, create one more variable named Touch_Sensor to store the data of the Touch sensor value received from the sensor.
6. Drag the set IR_Sensor to block from the Variables category and drop it inside the Repeat while block.
7. Then drag the Read IR Sensor at block from the Sensor category and attach it to the set IR_Sensor to block. Select Port5 (Advance) option from the drop-down menu.
8. Similarly, drag the set Touch_Sensor to block from the Variables category and drop it below the set IR_Sensor to block.
9. Drag the Read touch Sensor at block from the Sensor category and attach it to the set Touch_Sensor to block. Set the value as Port4 (Advance).
10. Drag the if block from the Control category and drop it below the set Touch_Sensor to block.
11. Click on the settings icon of the if block. A pop-up box appears.
12. Drag the else if and else blocks and place them below the if block in the pop-up box (refer to the given image).
13. Again, click on the settings icon to hide the pop-up box.
14. Drag block from the Control category and drop it to the right of the if block.
15. Now, drag two blocks from the Control category. Drop this one block to the left of the block and drop the second block to the right of the bock.
16. Select the ‘>’ operator from the drop-down list of the block to the left and select ‘<’ operator from the drop-down list of the block to the right.
17. Drag and drop the IR_Sensor block from the Variables category and place it in the left value box of the block.
18. Drag block from the Math category and drop it inside the right value box of the block. Type ‘400’ in place of 0.
19. Similarly, drag and drop the Touch_Sensor variable block inside the left value box of the and block inside its right value box. Type ‘400’ in place of 0.
20. If the value of the IR_Sensor variable is greater than 400, i.e., the IR Sensor senses the object and Touch_Sensor variable value is less than 400, i.e., the Touch Sensor does not detect any touch, blocks under this if block will be executed.
21. Drag the Print Data block from the Display category and drop it in the do part of the if block.
22. Drag the Text Box block from Text category and drop it in the empty part of the Print Data block. Type "Bot Stopped" in the Text Box block.
23. Now, set both motors to stop. For this, drag and drop two Move Motor at blocks from the Motor category. Select Port4 (Advance) for the first Move Motor at block and Port5 (Advance) for the second Move Motor at block. Make sure the "Stop" option is selected for both the blocks from the drop-down menu.
24. Similar to the condition defined for the if block, define the condition for the else if block using the or and and operator blocks from the Control category. You can select the or option from the drop-down of the block.
25. If the value of the IR_Sensor is either greater or less than 400, i.e., the IR sensor got triggered or not, but the value of the Touch_Sensor is greater than 400, i.e., the Touch sensor detects a touch; blocks under this else if block will be executed.
26. Now, set both motors to move left when the Touch sensor is pressed. For this, configure the motors at Port4 (Advance) and Port3 (Advance) to Clockwise. Change the speed of both the motors to be Medium.
27. Drag and drop the Time block from the Control category and set it to '1100' ms. This will move the bot left for 1100 milliseconds.
28. Now, Stop both the motors for '1000' ms.
29. Drag the Print Data block from the Display category and drop it in the else part of the if block.
30. Drag the Text Box block from Text category and drop it in the empty part of the Print Data block. Type "Bot Moving" in the Text Box block.
31. Now, set both the motors to move forward as long as no object is detected ahead.
32. Give a name to your program, save it, and then compile it.
33. Now, the program is ready to burn on the RAK. Scan QR code to view output
A. Tick () the Correct Option.
1 Warmer objects emit infrared radiation than cooler ones.
a less
c more
b a few
d many
2 The sensor works like a push button or a limit switch.
a infrared
c heat
b touch
d rain
3 From which category of blocks, you can get the “Print Data” block?
a Variable
c Display
B. Answer the Following.
b Control
d Sensor
1 What is the difference between the “and” and the “or” operator blocks?
2 What is the difference between the IR sensor and the touch sensor?
C. Apply Your Learning.
1 If the sensor car moves on the road, what challenges could it face?
2 Can you think of any other application of the sensor car in real-life?
Experiment 5: Line Follower 6
Objective
By strategically utilising two IR sensors, the students will program the robot to accurately track and follow a specific line. This activity develops their understanding of sensor-based navigation and improves problem-solving skills in robotics.
Things Around Us
The major use of line follower is in Advanced Driver Assistance Systems (ADAS) in cars as Lane Assist.
Let’s Build
1 Connect IR Sensor to the lower 2.5” U-Beam of the RC Car using 6mm Bolts.
Let’s Code
2 Similarly, connect another IR Sensor to the U-Beam of the assembly.
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks inside this occurs step by step.
3. Drag the Repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. This block is set to true by default.
4. Click on the Variables category.
5. Click on the Create Variable button. A pop-up box appears.
• Enter a suitable variable name, such as "rightIR".
• Click on the OK button. This will create a variable to store the data of the IR sensor value received from the right IR sensor.
6. Drag the set rightIR to block from the Variables category and drop it inside the Repeat while block.
7. Then, drag the Read IR Sensor at block from the Sensor category and drop it next to the set rightIR to block. Configure this block to Port4 (Advance).
8. Now, similarly create another variable named "leftIR".
9. Drag and drop the set leftIR to block. To its right, drag and drop the Read IR Sensor at block. Configure this block to Port5 (Advance).
10. Drag the if block from the Control category and drop it below the set leftIR to block.
11. Click on the settings icon of the if block. A pop-up box appears.
12. Drag the else if block three times and place it below the if block in the pop-up box (refer to the given image).
13. Now, click on the settings icon again to close the pop-up box.
14. Drag the block from the Control category and attach with the if block.
15. Drag two blocks from the Control category and drop them inside the left and right boxes of the block.
16. Select the '>' sign in place of the '=' sign for both the blocks.
17. Drag the rightIR block from the Variables category and drop it in the left value box of the block.
18. Drag and drop the block from the Math category inside the right value box of the block. Type '400' in place of '0'.
19. Similarly, set the condition of the leftIR variable.
20. If the value of the rightIR and leftIR is greater than 400, i.e., both the IR sensors detect the white lines, then, blocks under this if block will be executed.
21. For the if part, configure the motors at Port4 (Advance) to Clockwise direction and Port3 (Advance) to Anticlockwise direction. This will instruct the bot to keep moving forward when it is on top of the black line.
22. Similar to defining the condition for the if block, define the condition for the first else if part. Set the rightIR value as less than 400 and set the leftIR value as greater than 400. The code under this else if part will execute when the right IR sensor detects the black line below.
23. For the first else if part, set both motors to turn right. For this, configure the motors at Port1 and Port2 as Anticlockwise. This will instruct the bot to turn right as long as the right IR sensor is on top of the black line.
24. For the second else if part, use the comparison blocks to set the rightIR value as greater than 400 and set the leftIR value as less than 400. The code under this else if part will execute when the left IR sensor detects the black line below.
25. For the second else if part, set both motors to turn left by configuring the motors at Port1 and Port2 as Clockwise. This will instruct the bot to turn left as long as the left IR sensor is on top of the black line.
26. For the third else if part, use the comparison blocks to set the rightIR value as less than 400 and set the leftIR value as less than 400. The code under this else if part will execute when both the left and right IR sensors detect the black line below.
27. For the third else if part, set both motors to Stop. This will instruct the bot to stop if both the sensors detect the black line below.
28. Give a name to your program, save it, and then compile it.
29. Now, the program is ready to burn on the RAK.
Scan QR code to view output
Exercise
A. Tick () the Correct Option.
1 What value indicates that an IR sensor has detected a white line?
a Less than 200
c Exactly 300
b Greater than 400
d Less than 100
2 When both IR sensors detect the black line, what action does the bot perform?
a Moves forward
c Turns left
B. Answer the Following.
b Turns right
d Stops
1 Why are two IR sensors used in the line-following bot?
2 What is the purpose of using variables like rightIR and leftIR in the code?
C. Apply Your Learning.
1 Imagine your bot detects a white line with only the right IR sensor. Describe what the bot should do to stay on the line.
2 If you want the bot to turn left only when the left IR sensor detects the black line, how would you set up the motors?
Experiment 6: Dancer Car 7
Objective
Utilising touch sensors, students will program their bots to exhibit distinct dance moves triggered by sequential touch inputs, providing a playful introduction to programming logic and interactive robot behaviours.
Let’s Build
1 Attach the Axle Lock and the 3.5” Axles to the high-speed Motors, as shown.
2 After attaching the Axles to both Motors, screw them to the Chassis using the 6mm Bolts, as shown.
3 Repeat the previous step to attach the second high-speed Motor to the other side of the Chassis.
4 Add a Filler to the Axle, then add the Wheel and lastly add another Axle Lock. Do this for both the Axles.
5 Connect a 7.5” Rectangular plate to the Chassis using K-Nuts and 12 mm Bolts as shown in the figure.
6
Connect a 2.5” L-Channel to the 7.5” Rectangular plate using K-Nuts and 12 mm Bolts as shown.
7 Connect a 2.5” U-Beam to the 2.5” L-Channel using Nuts and Bolts.
8 Screw the Caster wheel to the 2.5” U-Beam using Nuts and Bolts.
9 Connect the battery to the Chassis using Nuts and Bolts.
10 Connect the Touch Sensor to the Chassis using a Nut.
11 Finally connect the FULL 2.0 brain to the Chassis using Nuts and Bolts.
12 Finally, the assembly looks like the one shown.
Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks present inside this occurs step by step, in sequence.
3. Click on the Variables category.
4. Click on the Create Variable button. A pop-up box appears asking you to create a New variable name.
• Enter a suitable variable name, let’s say "count" to store the number of times the touch sensor was pressed.
• Click on the OK button.
5. Drag the set to block from the Variables category and drop it inside the My Program block.
6. Then drag the number block from the Math category and attach this block with the set to block.
7. Drag the Repeat while block from the Loops category and drop it below the set to block to begin the infinite loop. The Repeat while block is set to true by default.
8. Now, similarly, create another variable named "Touch_Sensor" to store the data of the touch sensor value received from the sensor.
9. Drag the set to block from the Variables category and drop it inside the Repeat while block.
10. Select the "Touch_Sensor" variable name from the drop-down menu.
11. Then, drag the Read touch Sensor at block from the Sensor category and attach it with the set to block. Configure the Read touch Sensor at block to Port5 (Advance).
12. Drag the if block from the Control category and drop it below the set to block.
13. Click on the settings icon of the if block. A pop-up box appears.
14. Drag the else block and drop it below the if block in the pop-up box.
15. Click on the settings icon again to close the pop-up box.
16. Drag the equal operator block from the Control category and attach it to the right of the if block.
17. Select the '>' option from the drop-down menu of the equal operator block.
18. Drag the Touch_Sensor block from the Variables category and drop it in the left part of the greater than operator block.
19. Now, drag the number block from the Math category and drop it in the right part of the greater than operator block. Type "500" for the text part of the number block. Now, if the value of the Touch_Sensor variable is greater than 500, i.e., the touch sensor is pressed, then blocks under the if block will be executed, else the blocks under the else block will be executed.
20. Drag the set to block from the Variables category and drop it below the second set to block. Select the count variable from the drop-down menu of the set to block.
21. Drag the add operator block from the Math category and attach it with the set to block.
22. Now, drag the count variable block and drop it inside the left part of the add operator block. This adds a sum of "1" to the variable count every time the touch sensor is pressed.
23. Now, drag the if block and drop it below the set to block. Drag the else if block and drop it below the if block twice in the pop-up box.
24. Now, define the condition for the first if block using the equal operator block from the Control category. If the value of the count variable equals "1", then blocks under the if block will be executed.
25. Drag and drop two Move Motor at blocks in the do condition block.
26. Configure the first motor at Port3 (Advance) as clockwise by selecting the Clockwise option from the drop-down menu. Select the speed of the motor as Medium.
27. Similarly, select Port4 (Advance) from the drop-down of the second Move Motor at block. Configure the motor as anticlockwise by selecting the Anticlockwise option from the drop-down. Select the speed of the motor as Medium.
28. Drag and drop the Print Data block in the do part of the if block. Drag the empty Text Box block from the Text category and drop it inside the Print Data block. Type “Dance 1” in the Text Box block.
This will set the first dance move of the robot in the forward direction.
29. Repeat the above five steps and set the value for the number block as "2" instead of "1" for the else if condition. Also, type "Dance 2" in the Print Data block.
30. Change the motor movement to Anticlockwise for the first motor and Clockwise for the second motor.
31. Use the equal operator block for the second else if condition to set the value of the count variable block to "3".
32. Then, set both motors to Stop.
33. Drag and drop the set to block below the last Move Motor at block. Also, set the value of the count variable to "0" to reset its value.
34. Drag and drop the Print Data block in the do part of the if block. Drag the empty Text Box block from the Text category and drop it inside the Print Data block. Type “OFF” in the Text Box block.
35. Give a name to your program, save it, and then compile it.
36. Now the program is ready to burn on the RAK.
Scan QR code to view output
Exercise
A. Tick () the Correct Option.
1 What is the objective of the "Dancing Car " experiment?
a To build a robot that responds to voice commands.
b To use touch sensors to make the robot perform dance moves.
c To create a robot that moves continuously without stopping.
d To use sensors to avoid obstacles.
2 What is the role of the “Repeat while” block in this program?
a To play a sound whenever the touch sensor is pressed.
b To continuously check if the touch sensor is pressed.
c To count the number of LED colour changes.
d To set the direction of motor movement.
3 What does the "count" variable do in the program?
a It stores the sensor’s sensitivity level.
b It keeps track of the number of times the touch sensor is pressed.
c It sets the colour of the LED lights.
d It controls the speed of the motors.
B. Answer the Following.
1 Describe the steps required to attach the motors and wheels to the chassis.
2 Explain how the "if" and "else if" conditions are used to create different dance moves for the robot.
C. Apply Your Learning.
1 How would you modify the program to make the robot perform a fourth dance move?
2 If you want your robot to stop after a specific number of touch inputs, how would you update the program to achieve this?
Experiment 7: Shredding Machine 8
Objective
To make a shredding machine that can shred paper inside the machine.
Let’ Build
1 Connect the 2.5” L-Channel to two 2.5” U-Beam using 12mm Bolts and K-Nuts.
2 Connect 2.5” Square Plate to the 2.5” L-Channel using K-Nut and 12mm Bolt.
3
4
Connect two Big Spur Gears and a Medium Spur Gear in between to the 3.5” Axle using Fillers.
5
Connect High Speed Motor and 3.5” Axle to the 2.5” Square Plate using Axle Lock.
Connect 2.5” Square Plate to the 2.5” L-Channel using a Nut and a Bolt.
6 Connect the High Speed Motor to the assembly from the previous step using 3.5” Axle and Axle Lock.
7 Connect the Medium Spur Gear to the 3.5” Axle using Fillers.
8 Connect the assembly from the fourth step to the assembly from the previous step by inserting the 3.5” Axles in the 2.5” Square Plates as shown.
9 Now attach the Axle Locks to both the Axles.
10 Now insert a Bolt in the hole of 2.5” L-Channel and tighten the Bolt using a Nut.
11 Similarly, insert a Bolt in the hole of the 2.5” L-Channel (on the opposite side of the previous 2.5” L-Channel) and tighten the Bolt using a Nut.
12 Now, connect 7.5” L-Beam to the 2.5” U-Beam using Nuts and Bolts.
13 Connect the FULL 2.0 Brain to the 7.5” L-Beam using Nuts and Bolts.
14 Connect the IR Sensor to the 7.5” L-Beam using Nuts.
15 Finally, connect the Full 2.0 Brain with the Battery.
16 Connect IR Sensor to Port S5 of the Brain.
17 Connect High Speed Motors to Ports M3 and M4 of the Brain.
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks inside this occurs step by step.
3. Drag the Repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. The loop value is set to true by default.
4. Click on the Variables category.
5. Click on the Create variable button. A pop-up box appears asking you to enter a new variable name.
• Enter a suitable variable name, let us say "IR_Sensor ", to store the data of the IR sensor value received from the sensor.
• Click on the OK button.
6. Drag the set to block from the Variables category and drop it inside the Repeat while block.
7. Drag the Read IR Sensor at block from the Sensor category and attach it to the set to block. Select "Port5 (Advance)" option from the drop-down menu of the Read IR Sensor at block.
8. Drag the if block from the Control category and place it below the set to block.
9. Click on the settings icon of the if block. A pop-up box appears.
10. Drag the else block and place it below the if block in the pop-up box (refer to the image below).
11. Click on the settings icon again to hide the pop-up box.
12. Drag the equal operator block from the Control category and attach it to the right of the if block.
13. Select the ">" option from the drop-down menu of the equal operator block.
14. Drag the IR_Sensor block from the Variables category and drop it in the left part of the greater than operator block.
15. Now, drag the number block from the Math category and drop it in the right part of the greater than operator block. Type "400" for the text part of the number block. Now, if the value of the IR_Sensor variable is greater than 400, then blocks under the if block will be executed, else the blocks under the else block will be executed.
16. Drag the Print Data block from the Display category and drop it in the do part of the if block. The Print Data block is set to Row1 by default.
17. From the Text category, drag the Text Box block and drop it in the empty space of the Print Data block.
18. In the Text Box block, type the text "Shredding Started".
19. Drag two Move Motor at blocks from the Motor category and drop them below the Print Data block.
20. Configure the motor at Port4 (Advance) and Port3 (Advance) as Clockwise. The block is set to High speed by default. This will move the bot in the left direction.
21. Similarly, drag another Print Data block and drop it in the else block.
22. Drag the Text Box block and drop it in the empty space of the Print Data block. In the Text Box block, type the text "Shredding Paused".
23. Drag two Move Motor at blocks and drop them below the Print Data block.
24. Configure the motor at Port4 (Advance) and Port3 (Advance) to Stop.
25. Give a name to your program, save it, and then compile it.
26. Now, the program is ready to burn on the RAK.
Scan QR code to view output
Exercise
A. Tick () the Correct Option.
1 To which category does the block belong?
a Sensor b Display
c Variables d Control
2 Which among the following is a variable block per the program of the experiment?
a Print Data b Move Motor at
c IR_Sensor d My Program
3 Which part of the code will be executed if the IR_Sensor value is less than 400? (Refer to the screenshot below)
a The blocks under the else block.
c The code will never be executed.
B. Fill in the Blanks.
b The blocks under the do part of the if block.
d None of these
1 There are number of port options in the ‘Move Motor at’ block in the RAK kit.
2 We can make the bot move in the direction by configuring two motors as clockwise.
3 We can set a variable to a specific value by selecting the number block from the category.
4 The ‘Move Motor at’ block is set to speed by default.
C. Apply Your Learning.
1 Which real-life application involves breaking down paper and other materials for reuse after shredding?
2 Sana’s family has a shredding machine at home. Her parents use it to destroy old bills, bank statements, and other documents. Why do you think shredding these papers is important for Sana’s family?
Experiment 8: Construction Site Lift 9
Objective
Create a lift for the construction site where the mechanism for lift is made using the combination of motor and pulley to lift objects.
Background
In this experiment, the program controls a motorised lift mechanism, allowing it to lift or drop objects based on sensor input. The code uses a touch sensor to detect interactions and operates the motor at different speeds and directions according to the current count value.
Things Around Us
You can see the use of construction site lift at the following places:
1. Buildings Construction
2. Lifting Heavy Load
3. Bridges and Roads
After creating the RC car, follow the given steps to create your Construction site lift robot:
1 Connect the 2.5” L-Channel to the 7.5” Rectangle in the assembly from the previous step using Nuts and Bolts.
2 Connect the High Torque Motor to the 2.5” L-Channel in the assembly from the previous step using 3.5” Axle, Axle Lock, and 6mm Bolts.
3
Connect the 7.5” L-Beam to the 7.5” Rectangle of the assembly in the previous step using Nuts and Bolts.
4 Connect the 7.5” L-Channel to the 7.5” L-Beam of the assembly in the previous step using Nuts and Bolts.
5
Connect two Big Spur Gears to the 7.5” L-Channel in the assembly from the previous step using 3.5” Axle and two Axle Locks as shown.
6
Connect the Big Wheel (after removing its rubber) to the Axle of the Big Spur Gears, Fillers, and an Axle Lock.
7
Connect the Touch Sensor to the 7.5” Rectangle in the assembly from the previous step using Bolts.
8 Finally, the assembly looks like the one as follows.
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks inside this occurs step by step, in sequence.
3. Click on the Variables category.
4. Click on the Create Variable button. A pop-up box appears asking you to create a New variable name.
• Enter a suitable variable name "count".
• Click on the OK button. This will create a counter variable that tracks the number of touches detected.
5. Drag the set to block from the Variables category and drop it inside the My Program block.
6. Then drag the number block from the Math category and attach this block with the set to block.
7. Drag the Repeat while block from the Loops category and drop it below the set to block to begin the infinite loop. By default, the loop value is set to true.
8. Click on the Variables category.
9. Click on the Create variable button. A pop-up box appears asking you to enter a new variable name.
• Enter a suitable variable name, let us say "Touch_Sensor".
• Click on the OK button.
10. Now, drag and drop the set to block from the Variables category and drop it inside the Repeat while block.
11. Drag the Read Touch Sensor at block from the Sensor category and attach it to the set to block. Select the option "Port5 (Advance)" from the drop-down of the Read Touch Sensor at block.
12. Drag the if block from the Control category and place it below the set to block.
13. Click on the settings icon of the if block. A pop-up box appears.
14. Drag the else block and place it below the if block in the pop-up box (refer to the image below).
15. Click on the settings icon again to hide the pop-up box.
16. Drag the equal operator block from the Control category and attach it to the right of the if block.
17. Select the '≥' option from the drop-down of the equal operator block.
18. Drag the Touch_Sensor block from the Variables category and drop it in the left part of the greater than equal to operator block.
19. Now, drag the number block from the Math category and drop it in the right part of the greater than equal to operator block. Type "400" for the text part of the number block. Now, if the value of the Touch_Sensor variable is greater than 400, then blocks under the if block will be executed, else the blocks under the else block will be executed.
20. Drag the set to block from the Variables category and drop it in the do part of the if block. Select the "count" option from the drop-down of the set to block.
21. Drag the add operator block from the Math category and attach it to the set to block.
22. Now, drag the count variable block and drop it in the left part of the add operator block. This adds 1 to the variable count every time the touch sensor is pressed.
23. Drag another if block and place it below the set to block.
24. Click on the settings icon of the if block. A pop-up box appears.
25. Drag the else if block and place it below the if block in the pop-up box (refer to the image below).
26. Click on the settings icon again to hide the pop-up box.
27. Drag the equal operator block and attach it to the if block.
28. Drag and drop the count variable block in the left part of the equal operator block.
29. Drag and drop the number block in the right part of the equal operator block. Type "1" in the text part of the number block.
30. Drag the Move Motor at block from the Motor category and drop it in the do part of the if block.
31. Configure the motor at Port2 (Advance) as Clockwise. Set the speed of the motor to Medium.
32. Drag the Print Data block from the Display category and drop it in the do part of the if block. The Print Data block is set to Row1 by default.
33. From the Text category, drag the Text Box block and drop it in the empty space of the Print Data block.
34. In the Text Box block, type text "Lifting".
35. Similarly, drag the equal operator block and attach it to the else if block.
36. In the left part of the equal operator block, drag and drop the count variable block and drag and drop the number block. Type "2" in the text part of the number to its right.
37. Drag and drop the Move Motor at block in the do part of the else if block. Configure the motor at Port2 (Advance) as Anticlockwise. Set the speed of the motor to Medium.
38. Now, drag the Print Data block and drop it below the Move Motor at block.
39. Drag the text box block and drop it in the empty space of the Print Data block. In the Text Box block, type text "Dropping".
40. Drag the set to block and drop it below the Print Data block. Select the "count" option from the drop-down of the set to block.
41. Drag the number block and attach it to the set to block. The number block is set to "0" by default.
42. Drag the Move Motor at block and drop it in the else part of the if-else block. Configure the motor at Port2 (Advance) to Stop.
43. Now, drag the Print Data block and attach it to the Move Motor at block.
44. Drag the text box block and drop it in the empty space of the Print Data block. In the Text Box block, type text "Stopped".
45. Give a name to your program, save it, and then compile it.
46. Now, the program is ready to burn on the RAK.
Scan QR code to view output
A. Tick () the Correct Option.
1 The primary objective of this experiment is to:
a Build a robot to play music.
b Create a pulley system that rotates in circles.
c Create a lift mechanism to lift and drop objects.
d Design a counting system for a touch sensor.
2 The motor ’s direction is controlled in the program by:
a A light sensor
c A touch sensor
b A distance sensor
d A colour sensor
3 The purpose of the variable named “count” in the program is to:
a Track the lift’s speed
c Control the motor’s power
B. Answer the Following.
b Track the number of touches detected
d Display the program status
1 What is the purpose of using a touch sensor in the construction site lift experiment?
2 Explain how the motor is controlled to lift and drop objects in this experiment.
C. Apply Your Learning.
1 Think about another real-world situation where a motor and pulley system could be useful.
2 Imagine you want to modify the program to increase the speed of the lift when it detects more than 10 touches. What changes would you make to the program?
Experiment 9: Construction Site Lift AI
Objective
To lift objects on construction sites using a motor, pulley, and AI-powered RAK bot with a construction lift mechanism.
Background
Artificial Intelligence (AI)
Artificial Intelligence or AI, is the field of computer science that deals with the study of the principles, concepts, and technology for building machines that enable them to think, act, and learn like humans. Machines possessing AI should be able to mimic human traits, i.e., making decisions, recognising patterns, predicting outcomes based on certain actions, learning, and improving on their own.
Natural Language Processing (NLP)
NLP is a domain of AI that enables computers to understand human language and generate appropriate responses when we interact with them. It allows computers to talk to us in a way that feels natural to us. Popular examples of NLP applications include Google Assistant, Siri, Alexa, Google Translate, etc.
Computer Vision
Computer Vision is a domain of AI which uses cameras to see and understand visual information.
Things Around Us
Some of the real-life examples of NLP are:
1. Virtual Assistants
2. Language Translation Apps
Some of the real-life examples of Computer vision are:
1. Face Recognition in Smartphones 2. Self-driving Cars
Construction Site Lift AI: Using Speech Recognition
In this experiment, the use of NLP in the RAK includes:
• Recognising speech that includes lift or drop.
• Converting spoken commands into actions that the bot can execute.
• Detecting unclear user input and prompting the user to repeat commands.
Let’s Code
1. Click on the Control category in the Blocks panel.
2. Drag the My Program block to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Drag the repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. The loop value is set to true by default.
4. Click on the Variables category.
5. Click on the Create variable button. A pop-up box appears asking you to enter a new variable name.
• Enter a suitable variable name, let us say "Speech".
• Click on the OK button.
6. Drag the set to block from the Variables category and drop it inside the repeat while block.
7. Drag the get recognised speech block from the Speech Recognition category and attach it to the set to block.
8. Now, drag the if block from the Control category and drop it below the set to block.
9. Click on the settings icon of the if block. A pop-up box appears.
10. Drag the else if block and drop it below the if block in the pop-up box (refer to the image below).
11. Click on the settings icon again to hide the pop-up box.
12. Now, drag the includes block from the Text category and attach it to the if block.
13. Drag the Speech block from the Variables category and drop it in the left text box of the includes block.
14. Type "lift" in the right text box of the includes block.
15. Drag the Move Motor at block from the Motor category and drop it inside do part of the if block.
16. Configure the motor at Port2 (Advance) as clockwise by selecting the Clockwise option from the drop-down.
17. Select the speed of the motor as Medium from the Speed drop-down.
18. Drag the Time block from the Control category and drop it below the Move Motor at block.
19. Type "2000" in the value box of the block. This will allow the forward movement of the bot for 2000 milliseconds (ms) or 2 seconds.
20. Now, drag Print Data block from Display category and drop it below the Time block.
21. Drag the Text Box block from Text category and drop it in the empty space of the Print Data block. Type "Lifting" in the Text Box block.
22. Similarly, drag another includes block and attach it to the else if block.
23. Drag the Speech block and drop it in the left text box of the includes block.
24. Type "drop" in the right text box of the includes block.
25. Now, drag the Move Motor at block and drop it in the do part of the else if block.
26. Configure the motor at Port2 (Advance) as anticlockwise by selecting the Anticlockwise option from the drop-down.
27. Select the speed of the motor as High from the Speed drop-down.
28. Drag the Time block and drop it below the Move Motor at block.
29. Type "2000" in the value box of the block. This will allow the backward movement of the motor for 2000 milliseconds (ms) or 2 seconds.
30. Now, drag Print Data block and drop it below the Time block.
31. Drag the Text Box block from Text category and drop it in the empty space of the Print Data block. Type "Dropping" in the Text Box block.
32. Give a name to your program, save it, and then compile it.
33. Now the program is ready to burn on the RAK, and you can play the game.
Note: The RAK should be connected to your computer through a Bluetooth or USB cable for the experiment to run.
34. Click on the Run button on the AI window.
35. Allow the system to use your microphone to hear your commands.
36. Click on the microphone button present on the AI window.
37. Give any command (lift or drop).
38. Again, click on the microphone button and observe the output on the RAK.
Construction Site Lift AI: Using Camera Capture Mode
In this experiment, computer vision is used to recognise hand gestures through the camera.
• The AI model is trained to detect specific hand poses, such as “Palm,” and “Fist”.
• Once trained, the model can identify these gestures in real-time.
• Each gesture then triggers specific actions within the game.
Instructions
Before we start writing the code, let us train our AI Model. Follow the given steps:
1. Allow the system to use your camera.
2. Click on the Configure AI Model button in the AI Window on the right of your screen.
3. Choose your model by selecting Handpose from the Create Your Model pop-up window.
4. Add a name for your model and save it. You can also skip it.
5. Now, add the label name as "Palm" and click on the Save button.
6. Click on the Start Recording button and show your palm up to 60 Frames on the camera.
7. Now, click on the Plus sign on the top left corner and add a name for Label 2. Here, the name of the Label 2 is "Fist". Then, click on the Save button.
8. Similarly, show your fist on the camera and record different fist postures by showing your fist on the camera.
9. Now, click on Train Model button to train the AI about these poses. It will take a few minutes.
10. Add an appropriate model name and save it.
11. Test your model to check whether the AI is able to recognise the palm and fist poses correctly.
12. Now, click on the Download button.
13. You are now ready to write your code.
1. Click on the Control category in the Blocks panel.
2. Drag the My Program block to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Drag the repeat while block from the Loops category and drop it inside the My Program block to begin the infinite loop. The loop value is set to true by default.
4. Now, drag the if block from the Control category and drop it inside the repeat while block.
5. Click on the settings icon of the if block. A pop-up box appears.
6. Drag the else if block and drop it below the if block in the pop-up box. Repeat this for two times.
7. Click on the settings icon again to hide the pop-up box.
8. Drag the equal operator block from the Control category and attach it to the if block.
9. Now, drag the get detected AI label block from the AI category and drop it in the left part of the equal operator block.
10. Drag the Palm block from the AI category and drop it in the right part of the equal operator block.
11. Drag the Move Motor at block from the Motor category and drop it in the do part of the if block.
12. Configure the motor at Port2 (Advance) as clockwise by selecting the Clockwise option from the drop-down.
13. Select the speed of the motor as Medium from the Speed drop-down.
14. Now, drag Print Data block from Display category and drop it below the Move Motor at block.
15. Drag the Text Box block from Text category and drop it in the empty part of the Print Data block. Type "Lifting" in the Text Box block.
16. Similarly, drag another equal operator block and attach it to the first else if block.
17. Now, drag the get detected AI label block and drop it in the left part of the equal operator block.
18. In the right part of the equal operator block, drag and drop the Palm block from the AI category. Select the Fist option from the drop-down of the Palm block.
19. Now, drag Move Motor at block and drop it inside do part of the first else if block.
20. Configure the motor at Port2 (Advance) as anticlockwise by selecting the Anticlockwise option from the drop-down.
21. Select the speed of the motor as Medium from the Speed drop-down.
22. Now, drag Print Data block from Display category and drop it below the Move Motor at block.
23. Drag the Text Box block from Text category and drop it in the empty part of the Print Data block. Type "Dropping" in the Text Box block.
24. Similarly, drag another equal operator block and attach it to the second else if block.
25. Now, drag the get detected AI label block and drop it in the left part of the equal operator block.
26. In the right part of the equal operator block, drag and drop the Palm block from the AI category. Select the None option from the drop-down of the Palm block.
27. Now, drag Move Motor at block and drop it in do part of the second else if block.
28. Configure the motor at Port2 (Advance) to Stop.
29. Give a name to your program, save, and then compile it.
30. Now the program is ready to burn on the RAK, and you can play the game.
Note: The RAK should be connected to your computer through a Bluetooth or USB cable for the experiment to run.
31. Click on the Run button on the AI window.
32. Show any pose with your hand (Palm or Fist) on the camera.
33. Observe the output on the RAK. Scan QR code to view output
A. Tick () the Correct Option.
1 Which category contains the block used to detect AI labels?
a Display b AI
c Motor d Control
2 Which among the following blocks gets the speech recognised as text in this program?
a Move Motor at b get recognised speech
c Print Data d My Program
3 What hand gesture should you show to make the lift move up?
a Fist
b Wave
c Thumbs up d Palm
B. Answer the Following.
1 What happens when the AI detects no handpose on the camera?
2 How does Natural Language Processing (NLP) contribute to this experiment?
C. Apply Your Learning.
1 How could you make the RAK respond to an additional command, like “stop” in speech recognition mode?
2 What would happen if the “None” block was not included in the code in camera capture mode?
Maker Board
Exploring the Hardware Kit 1
About Maker Board
Maker Board is an easy-to-use electronic platform that helps you to make innovative projects. It consists of a 5×5 RGB LED matrix, a buzzer, four push buttons and six GPIO pins. You can use your creative ideas using the Maker Board by controlling its electronic sensors and modules. You can make and play interactive games using the LED matrix and the push buttons. You can make a piano, a snake game, a smart band, and many more such things.
Components of the Hardware Kit
The Maker Board robotics kit contains the following components:
The Maker Board can be programmed using the Maker Studio coding interface, an easy-to-use Graphical User Interface (GUI) block-based coding platform.
1. Maker Board 2. IR Sensor
3. Servo Motor 4. LEDs
5. Jumper Cable 6. Batteries 7. LDR Sensor 8. Rain Sensor
Detailed Description of the Components
1. GPIO Pads
There are 4 Pulse Width Modulation (PWM) pins and 2 Analog to Digital Converter (ADC) pins, which make a total of 6 General Purpose Input Output (GPIO) pins to interface with analog and digital sensors, LEDs, Motors, etc., using jumper cables and alligator clips.
2. Power Pins
1 VCC pin—This pin outputs a regulated voltage of 3.3V.
2 GND pins—Power Output (0V).
1 VIN pin—The input voltage to the Maker Board when it is using an external power source.
3. Programming LED Matrix
An LED matrix is a grid of addressable Red, Green, and Blue (RGB) LEDs arranged in rows and columns. In this, a total of 25 addressable RGB LEDs are used, which can be controlled individually. An LED matrix can be used to display animations or scroll text, numbers, patterns, etc. It can also be used to make different types of 8-bit games.
4. Push Buttons
There are 4 on-board push buttons named A, S, W, and D to perform various operations like activate, deactivate or move the blinking light of the LED in different directions.
5. Buzzer
The buzzer is used to make different types of sounds at distinct frequencies and at different beats per minute.
6. Reset Button
The reset button is used to restart any program loaded in the Maker Board.
7. Bluetooth Module (HC-05)
The Bluetooth module gets you started with the possibilities of IoT and enables wireless controlling of various equipment connected to the Maker Board.
IoT stands for Internet of Things which refers to a network of interconnected devices embedded with sensors and software, enabling them to collect, exchange data, and make autonomous decisions.
8. Standoff Holes
These holes are present to ensure that the Maker Board can be safely used on electrically conductive surfaces.
About Maker Studio Coding Interface
The Maker Studio coding interface acts as an integrated development environment that allows you to write code for all of your projects. This code is then loaded into the Maker Board.
The Maker Studio coding interface consists of five major components:
1. A workspace area to drag blocks for the code you want to create.
2. A blocks panel, which contains all the blocks required to make your code.
3. The Share Code option in the File drop-down menu generates a shareable link for the project.
4. Buttons to save, compile, and burn your code.
5. The Simulator Window to see the output.
Burning Your Code into Maker Board Hardware
Burning means loading your code into the Maker Board hardware. This process, mainly, has the following phases: Arrange the blocks to create the code Save the code In case of error, recheck the code.
Experiment 1: Calculator 2
Objective
Let’s make the Maker Board do some math and make a calculator. We will perform +, −, *, / operations on numbers depending upon which key out of W, A, S, D is pressed by the user. We will use a Maker Board to displaying the numbers.
Background
1. Button-Click
• Button-click is an event that causes something to happen.
• We can use these to tell programs under what circumstance(s) a particular action or set of actions should happen. Some examples of events are as follows:
• Keyboard events (Detecting the press of a certain key).
• As per input/output system, keyboard events are considered as Input and corresponding actions are considered as Output.
2. Conditionals
• Human beings (and other animals) make decisions all the time that affect their lives, for eg. a. "Should I eat one cookie or two?" b. "Should I play cricket or badminton?"
• Similarly, to make decisions and carry out actions accordingly, in our code, we use conditionals.
3. If block
• Conditional blocks have conditions and the program’s flow is based on whether the condition is true or false.
• To apply conditions in code, use the if block. The if block has else if and else blocks.
• If the condition given in the if block is true, then the set of code is executed; otherwise, the code given in else if or else block is executed.
Things Around Us
Some of the real life examples are:
1. Mathematical game apps
Let’s Code
2. Calculator app in phones
1. Click on the Control category in the Blocks panel.
2. Drag and drop the My Program block to the workspace to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Create two variables named “Num1” and “Num2”.
4. Drag the set Num1 to and set Num2 to blocks from the Variables category, and drop these blocks to the workspace in the same order inside the My Program block.
5. Set the values of these variables to “10” and “5”, respectively by using the number block from the Math category.
6. Drag the repeat while block from the Loops category and drop it below the second set Num2 to block. 7. Now, drag the If button block from the Button category and drop it inside the repeat while block.
8. Select “A” from the drop-down button.
9. Now, drag the show number block from the Display category and drop it inside the If button block.
10. Select your favourite colour from the colour palette and set the brightness to “100”.
11. Now, drag the add operator block from the Math category and drop it in the show number block.
12. Now, insert the Num1 and Num2 variable blocks from the Variables category in the add operator block.
13. Similarly, perform steps 5 to 10 again and change the value of the If button to “W” and change the “+” operation to “−”.
14. Similarly, assign the “×” operator to the “D” button.
15. Similarly, assign the “÷” operator to the “S” button.
16. Give a name to your program, save and then compile it.
17. Now the program is ready to burn on the Maker Board, and you can use your calculator. Note: The Maker Board should be connected to your computer through a USB for the experiment to run.
Scan QR code to view output
A. Tick () the Correct Option.
1 Which block is used to create conditional statements in the program? a My Program b If button
c repeat while d show number
2 In which category would you find the “add operator” block?
a Math b Control
c Button d Display
3 Which button is associated with the subtraction operation?
B. Answer the Following.
1 Which button is used for multiplication in this program?
2 How are "Num1" and "Num2" set in this program?
C. Apply Your Learning.
1 Where do you use calculators in real life?
2 If you wanted to display the result of addition in a different colour, how would you do it?
Experiment 2: Blinking of LEDs 3
Objective
Let’s make a circuit to glow LEDs using different buttons.
Background
1. Circuit
• Electric circuits are paths for transmitting electric current or moving electricity.
• Such circuits allow electricity to be used to provide power to lights, appliances, and many other devices.
• Electricity can only flow around a complete circuit that has no gaps.
• Current is the flow of electrical charge through materials.
2. Parts of the Circuit
• There is a power supply (the battery).
• There should be no gaps anywhere, so that the electrical current can flow around the entire circuit.
• The wires to connect the positive and the negative ends of the battery.
• Next, circuits need connectors. Connectors connect all the parts of the circuit and create the path or loop through which the electricity passes. Connectors are often made of wire or other metal.
• Another component is the load. This is the object being powered by the electricity in a circuit. It could be a light bulb, a TV, a fan, or any of the electronic gadgets we use every day.
Things Around Us
Some of the real-life examples are: 1. Digital sign boards
Road lamps
Circuit
• Connect the P0 pin of the Maker Board with the longer leg of LED 1 with a resistor in between.
• Connect the GND pin of the Maker Board with the shorter leg of LED 1.
• Connect the P3 pin of the Maker Board with the longer leg of LED 2 with a resistor in between.
• Connect the GND pin of the Maker Board with the shorter leg of LED 2.
LED 1
LED 2
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Drag the configure pin block from the Hardware category, and drop it inside the My Program block.
4. Select the P0 pin as Output.
5. Now, drag and drop another configure pin block, and select the P3 pin as Output.
6. Now, drag the repeat while block from the Loops category and drop it below the last configure pin block.
7. Now, drag the If button block from the Button category and drop it inside the repeat while block.
8. Set the value of the button to “W” from the drop-down.
9. Now, drag the show pattern block from the Display category and drop it inside the If button block.
10. Select any pattern of your choice for the LED Matrix from the drop-down.
11. Now, drag two output pin blocks from the Hardware category and drop them below the show pattern block.
12. For the first output pin block, select “P0” as “High”, so that LED 1 is turned on, and for the second block, select “P3” as “Low”, so that LED 2 is turned off.
13. Now, drag and drop another If button block and set the value to “A”.
14. Now, drag another show pattern block and drop it inside the last If button block.
15. Select any pattern of your choice different from the one selected earlier.
16. Now, drag two output pin blocks and drop them below the show pattern block.
17. For the first output pin block, select “P0” as “Low”, so that LED 1 is turned off, and for the second output pin block, select “P3” as “High”, so that LED 2 is turned on.
18. Give a name to your program, save and then compile it.
19. Now, the program is ready to burn on the Maker Board, and you can use your blinking LED.
Note: The Maker Board should be connected to your computer through a USB for the experiment to run.
Scan QR code to view output
A. Tick () the Correct Option.
1 What is the purpose of the configure pin block in this program?
a To set the pin as either input or output
c To change the LED colour
2 The repeat while block is used to:
a Run the program only once
c Continuously check conditions
b To turn on the Maker Board
d To start a loop
b Stop the program after one cycle
d Stop all button functions
3 Which hardware component is being controlled with the output pin blocks?
a LED Matrix
c Buzzer
B. Answer the Following.
b Motors
d LEDs 1 and 2
1 What purpose does the If button block serve in this program?
2 How is the LED Matrix pattern changed with each button press?
C. Apply Your Learning.
1 Give any two real-life examples where you observe blinking of LEDs.
2 Suggest a way to turn off all LEDs and patterns when no button is pressed.
Experiment 3: Blink LED AI 4
Objective
Let's make the LEDs on the Maker Board blink using Artificial Intelligence.
Background
Artificial Intelligence (AI)
Artificial Intelligence or AI, is the field of computer science that deals with the study of the principles, concepts, and technology for building machines that enable them to think, act, and learn like humans. Machines possessing AI are able to mimic certain human traits, i.e., making decisions, recognising patterns, predicting outcomes based on certain actions, learning, and improving on their own.
Natural Language Processing (NLP)
NLP is a domain of AI that enables computers to understand human language and generate appropriate responses when we interact with them. It allows computers to talk to us in a way that feels natural to us. Popular examples of NLP applications include Google Assistant, Siri, Alexa, Google Translate, etc.
Computer Vision
Computer Vision is a domain of AI which uses cameras to see and understand visual information.
Things Around Us
Some of the real-life examples of NLP are:
1. Virtual Assistants
2. Language Translation Apps
Some of the real-life examples of computer vision are:
1. Face Recognition in Smartphones
2. Self-driving Cars
Blink LED AI: Using Speech Recognition Mode
In this experiment, the use of NLP in the Maker Board includes:
• Building an AI-driven circuit to control the brightness of LEDs based on voice commands.
• When the voice recognition model detects the word “high”, the LEDs on the Maker Board light up at a high intensity.
• If it detects the word “low”, the LEDs will adjust to a lower brightness level.
Let's Build
To create the circuit for this project:
• Connect the P0 pin of the Maker Board to the longer leg of the LED with a resistor in between.
• Connect the GND pin of the Maker Board to the shorter leg of the LED.
• After connecting the positive leg of the LED to P0 and the negative leg of the LED to GND, you can see your LED flashing.
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Now drag the configure pin block from the Hardware category and drop it inside the My Program block.
4. Select P0 pin as Output.
5. Drag the repeat while block from the Loops category and drop it below the configure pin block. The block is set to true by default.
6. Click on the Variables category.
7. Click on the Create variable button. A pop-up box appears asking you to enter a new variable name.
• Enter a suitable variable name, let us say “Sound”.
• Click on the OK button.
8. Drag the set to block from the Variables category and drop it inside the repeat while block.
9. Drag the get recognised speech block from the Speech Recognition category and attach it to the set to block.
10. Drag the if block from the Control category and place it below the set to block.
11. Click on the settings icon of the if block. A pop-up box appears.
12. Drag the else if block and place it below the if block in the pop-up box (refer to the image below).
13. Again, click on the settings icon to hide the pop-up box.
14. Drag the includes block from the Text category and attach it to the if block.
15. Drag the Sound block from the Variables category and drop it in the left text box of the includes block.
16. Type “high” in the right text box of the includes block.
17. Now drag the output pin block from the Hardware category and drop it in the do part of the if block. Select P0 as High so that the LED is turned on.
18. Now drag the Time block from the Control category and drop it below the output pin block. The Time block is set to “1000” milliseconds (ms) or 1 second by default.
19. Similarly, drag another includes block and attach it to the else if block.
20. Drag the Sound variable block in the left text box of the includes block.
21. Type “low” in the right text box of the includes block.
22. Now, drag and drop the output pin block in the do part of the else if block. Select P0 as Low so that the LED is turned off.
23. Drag and drop the Time block below the output pin block.
24. Give a name to your program, save it, and then compile it.
25. Now the program is ready to burn on the Maker Board, and you can use the blinking LED circuit.
Note: The Maker Board should be connected to your computer through a Bluetooth or USB cable for the experiment to run.
26. Click on the Run button on the AI window.
27. Allow the system to use your microphone to hear your commands.
28. Click on the microphone button present on the AI window.
29. Give a command containing the terms “high” or “low”. Here, the AI detects the voice as “Highest”.
30. Again, click on the microphone button and observe the output on the Maker Board.
Blink LED AI: Using Camera Capture Mode
In this experiment, computer vision is used to recognise hand gestures through the camera.
• We will train the machine to recognise different hand postures: a palm and a fist.
• When the AI detects a palm, the LEDs will glow, and when it detects a fist, the LEDs will turn off.
Instructions
Before we start writing the code, let us train our AI Model. Follow the given steps:
1. Allow the system to use your camera.
2. Click on the Configure AI Model button in the AI Window on the right of your screen.
3. Choose your model by selecting Handpose from the Create Your Model pop-up window.
4. Add a name for your model and click on the Save button.
5. Now, add the label name as “Palm” and click on the Save button.
6. Click on the Start Recording button and record different palm postures by showing your palm on the camera.
7. Now, click on the Plus sign on the top-left corner and add a name for Label 2. Here, the name of the Label 2 is “Fist”. Then, click on the Save button.
8. Similarly, record different fist postures by showing your fist on the camera.
9. Now, click on the Train Model button to train the AI using the recorded hand poses. It will take a few minutes.
10. Test your model to check whether the AI is able to recognise the palm and fist hand poses correctly.
11. Now, click on the Download button.
12. You are now ready to write your code.
Let’s Code
1. Click on the Control category from the Blocks panel.
2. Drag the My Program block to the workspace to begin your program. The execution of all the blocks present inside this occurs step by step.
3. Now drag the configure pin block from the Hardware category and drop it inside the My Program block.
5. Drag the repeat while block from the Loops category and drop it below the configure pin block. The block is set to true by default.
6. Drag the if block from the Control category and place it inside the repeat while block.
7. Click on the settings icon of the if block. A pop-up box appears.
8. Drag the else if block and place it below the if block in the pop-up box (refer to the image below).
9. Drag the equal operator block from the Control category and attach it to the if block.
10. Now, drag the get detected AI label block from the AI category and drop it to the left part of the equal operator block.
11. Drag the Palm block from the AI category and drop it to the right part of the equal operator block.
12. Now, drag the output pin block from the Hardware category and drop it in the do part of the if block. Select P0 as High so that the LED is turned on.
13. Similarly, drag the equal operator block and attach it to the else if block.
14. In the left part of the equal operator block, drag and drop the get detected AI label block.
15. In the right part of the equal operator block, drag and drop the Palm block from the AI category. Select the Fist option from the drop-down menu of the Palm block.
16. Now, drag and drop the output pin block in the do part of the else if block. Select P0 as Low so that the LED is turned off.
17. Give a name to your program, save it, and then compile it.
18. Now the program is ready to burn on the Maker Board, and you can play the game. Note: The Maker Board should be connected to your computer through a bluetooth or a USB cable for the experiment to run.
19. Observe the output on the Maker Board. Scan QR code to view output
A. Tick () the Correct Option.
1 Which of the following hand postures are used to perform the AI experiment of blinking LEDs?
a Palm b Fist
c Thumbs Up d Both a and b
2 Which of the following is the main purpose of training an AI model?
a To reduce the size of the dataset.
b To improve the model’s accuracy in predicting the type of hand posture.
c To display results to the user.
d None of these
2 While conducting the experiment, we allow the system to use the to hear the commands.
a Speakers b Microphone
c Headphones d None of these
B. Answer the Following.
1 What output does the Maker Board produce when the AI detects the palm hand posture?
2 What steps do you follow to observe the output on the Maker Board?
C. Apply Your Learning.
1 How can a voice command be integrated into the LED circuit using AI?
2 While testing the model to check whether the AI is able to recognise the hand poses correctly, when does the model detect “None” as input?
About the Book
This book introduces learners to the captivating realm of robotics, with a learner-friendly, motivating, and hands-on approach. It combines theoretical understanding with practice, through insightful examples of real-world applications, while promoting creativity and coding skills. Emphasising a project-based learning methodology, the book provides a series of projects, each with detailed instructions. These instructions can be effortlessly executed using the accompanying robotics hardware kit. The assembly and programming of the robotics systems are done through block-based coding, and simulation environments; accelerating the experiential learning journey of the learners.
Special Features
• Hands-on Experiments: Engaging experiments that allow students to build and test-run robots themselves.
• Detailed Coding Practice: Step-by-step coding instructions to program robots, making it easy for beginners to learn.
• Things Around Us: Each experiment connects robotics to real-world scenarios, showing how technology solves everyday problems.
• Comprehensive Background: Clear explanations of the concepts and the technology behind each experiment, helping students understand the "why" and the "how."
• Interactive Exercises: Exercises at the end of each experiment to reinforce learning and to challenge students to think critically.
About Uolo
Uolo partners with K-12 schools to provide technology-enabled learning programs. We believe that pedagogy and technology must come together to deliver scalable learning experiences that generate measurable outcomes. Uolo is trusted by over 15,000+ schools across India, Southeast Asia, and the Middle East.
