For my senior project, I created a MIDI controller using arcade buttons, potentiometers, and LED strip tape. It is programmed to control macros in Ableton Live with MIDI CC messages and notes.
The enclosure was built with 1x3 pine wood and plexiglass.
This is a video that displays the Rhomidus being used as a scratch sampler. The buttons trigger samples, and the knob controls the pitch envelope.