Arduino on Twitter: "DAWesome! This Redditor created their own colorful USB MIDI controller with an Arduino Due: https://t.co/OFjIHxFjqi https://t.co/qAfeK3peg0" / Twitter
Build this MIDI controller using an Arduino: The Transport – The Nerd Musician
DIY MIDI Footswitch Controller
Turn an Arduino Uno into a MIDI Controller: Guitar Pedals - Hackster.io