UNTZtrument: a Trellis MIDI Instrument. Created using an Arduino Leonardo, translucent button pads, driver boards, diffused white LEDS, and a custom laser cut enclosure. This box turns into a USB MIDI device that works with any computer and has 64 buttons with individually-controllable LEDs.
YouTube: https://www.youtube.com/watch?v=U7JcpBFUXzo&feature=youtu.be