Light Up Drumset
Using an arduino, some disk vibration sensors, an 8-channel relay board, and some LEDs, a friend and I built a light-up drumset for Cleveland's Ingenuity Fest. We used two different sized buckets as toms, a large trash bin as a bass drum, and a wok from our kitchen as a cymbol. By attaching each to their own LED color, we were able to translate drum beats into something visual.
Some footage of people using the finished drumset throughout the weekend: