Pneumatic walking robot uses vacuum suction cups to traverse almost any indoor surfaces and disinfect them with UV light.
Did you ever want to have a nice LED blink off and on while OpenCV recorded video from your WebCam?
Did you ever want to use another radio band to control your LED from a distance w/ an Xbee by way of push button?
Did you ever want to use a FET for switching your LED on and off?
Did you ever want to know if you were moving while you slept?
Did you want to light the LED and you got turned down on the fly? libgpiod!