Arduino Uno R3
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Chapter 0
Welcome to Robot Gurukul!
Your Arduino Adventure — Stages 1 to 3
What is this book?
This book helps you learn Arduino step by step through 30 fun projects. Each chapter matches a mission in Robot Gurukul Studio — the same lessons you see in the desktop app, written so you can read, build, and understand even when you are away from the computer.
How to use this book
1
Read the story
Every project starts with a real-world idea and a simple analogy so you know why you are building it.
2
Meet the parts
Learn what each component does before you touch any wires.
3
Build the circuit
Follow the wiring steps one at a time. Check the circuit diagram after each step.
4
Understand the code
Read the code in small pieces. Each block explains one idea.
5
Try the quiz
Test yourself with quick questions at the end of each chapter.
How the book matches the app
Each project chapter follows the same learning journey as Robot Gurukul Studio:
See itDiscover what the project doesStoryUnderstand the problem and analogyMeet partsLearn about each componentHow it worksFollow the program flowBuild itWire the circuit step by stepTry itRun and observePeek at codeRead the Arduino sketchQuick quizCheck your understandingCode labPractice challenges to try on your own
Safety first
- Always use a resistor with LEDs — it protects the LED and the Arduino pin.
- Connect and disconnect wires only when the Arduino is unplugged from USB power.
- Ask a teacher or adult if you are unsure about any connection.
- Never connect motors or high-power devices directly to Arduino pins without the right driver circuit.
- Keep food and drinks away from your breadboard and components.
Your starter kit
These 30 projects use the Robot Gurukul starter kit. Make sure you have all the parts before you begin Stage 1.
USB cable
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Breadboard
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Jumper wire pack
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Single LEDs
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Resistors 220 Ω
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RGB LED (common cathode)
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10-segment LED bar graph
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Pushbutton
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Slide switch
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Buzzer
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7-segment display (common cathode)
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PIR motion sensor module
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Parts you will meet
These components appear across the 30 projects in Stages 1–3.
It lights up little bars to show a number 1 to 6.
7-segment display
The number screen
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It thinks and tells the light when to turn on and off.
Arduino
The brain
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Press it for the blue color in the pattern.
Blue button
The blue button
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It flashes when blue is in the pattern.
Blue LED
The blue light
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Keeps the blue color safe from too much power.
Blue resistor
The protector
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Keeps the blue light safe.
Blue resistor
The protector
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Holds all the parts and joins them, like a LEGO baseplate.
Breadboard
Our building board
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You press it to send a message to the brain.
Button
The button
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It beeps when the brain says so.
Buzzer
The noise maker
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Glows green to say 'go!'.
Green LED
The go light
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Glows green when it is its turn.
Green LED
The second light
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Keeps the green light safe from too much power.
Green resistor
The protector
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Keeps the green light safe from too much power.
Green resistor
The protector
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Keeps the green color safe from too much power.
Green resistor
The protector
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A tiny light that glows when it gets power.
LED
The light
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Ten little lights in a line that you can switch on one by one.
LED bar graph
The row of lights
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It notices when something moves nearby.
Motion sensor
The motion sensor
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Press it to buzz in for Player A.
Player A button
Player A's button
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Press it to buzz in for Player B.
Player B button
Player B's button
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Press it for the red color in the pattern.
Red button
The red button
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Glows red to say 'stop and wait'.
Red LED
The stop light
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Glows red when it is its turn.
Red LED
The first light
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It flashes when red is in the pattern.
Red LED
The red light
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Keeps the red light safe from too much power.
Red resistor
The protector
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Keeps the red light safe from too much power.
Red resistor
The protector
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Keeps the red color safe from too much power.
Red resistor
The protector
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Keeps the red light safe.
Red resistor
The protector
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Slows the power down so the light does not get hurt.
Resistor
The protector
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One little bulb that can glow red, green, or blue.
RGB LED
The color light
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Slide it and it stays on or off all by itself.
Slide switch
The switch
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Press it for the yellow color in the pattern.
Yellow button
The yellow button
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Glows yellow to say 'get ready'.
Yellow LED
The get-ready light
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It flashes when yellow is in the pattern.
Yellow LED
The yellow light
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Keeps the yellow light safe from too much power.
Yellow resistor
The protector
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Keeps the yellow light safe.
Yellow resistor
The protector
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