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About this Lesson
Add your first INPUT. A pushbutton tells the Arduino when to act. Press and hold — LED on. Release — LED off. Then flip the logic and make it work in reverse. Your first if/else, your first real decision in code.
What You'll Do
1
Start from Lesson 01 — the LED blink circuit
2
Add a pushbutton to the breadboard
3
Connect a 10kΩ pull-down resistor to the button
4
Wire the button to digital pin 2 on your Arduino
5
Write your first if/else statement in code
6
Press the button — LED on. Release — LED off. You control it!
Components Needed
- Arduino Uno
- USB Cable
- 1× LED
- 220Ω Resistor
- Pushbutton
- 10kΩ Resistor
- Breadboard
- 4× Jumper Wires
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