Microcontroller
Controlling microcontrollers over USB with the Web Serial API
Upgrade your computer with LEDs, buttons, or sensors to control a microcontroller board over USB from your web browser.
Making a Retro-Style Alarm Clock
A few electronic components, some code, and a hand-made wooden case make a fine retro-style bedside clock.
Arduino Development on the Command Line
When programming an Arduino microcontroller board for the first time, most people use the Arduino IDE, a graphical development environment. However, if you prefer the command line, you have a powerful alternative: Arduino CLI.