Sim racing button box with rotary encoder. 2 rotary encoders with push buttons connected with an arduino. When pushing on a button or turning the knob, the arduino will mimic a keyboard and send a ...

Laser diode are available in various sizes and can be interfaced with Arduino Uno using photoresistors, photodiodes, sensors & detectors.

My daughter likes buttons. She's learning letters. I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable ...

Arduino USB Switching Button Box A simple media/game USB plug and play 'mode switching' button box. The same buttons are used, but the mode is switchable, allowing multiplied control functionality.