Project: Blink an LED
The hello world of physical computing: make an LED blink from code on a microcontroller. You can connect the LED directly to power and ground, using a resistance in the circuit to keep the voltage low enough not to explode the light. Starting with a breadboard can make this setup simpler.
Build Reference
Breadboard layout for the blink circuit.
Schematic for an LED and resistor connected to a microcontroller pin
You can move on when you can...
- LED blinks at a rate you control from code
- Bonus: button press changes the blink pattern (uses Logic Gates thinking)
Resources
Iulia's Hardware Picks
Some links below are affiliate links. As an Amazon Associate I earn from qualifying purchases. I may also earn a small commission from other links, at no extra cost to you, and I only list gear I actually use and recommend.