An low cost MIDI controller for drum machines like Addictive Drums and Hydrogen

Arduino based MIDI device, also called launchpad 🎹

Simple USB MIDI controller with 1 Pitch Fader, 1 Toggle Switch, 1LED and Arduino Micro.

24-input capacitive MIDI controller via USB at Atmega32u4

Midi sound source using YMZ294 and MIDIUSB. (Supposed to run on arduino micro, or pro micro)

This MIDI controller seamlessly adds drum sounds to your guitar or bass. Attachable to your instrument, it broadens your sonic range, enhancing performances with rhythmic depth. Powered by an Arduino Pro Micro and MIDIUSB library in cpp, it ensures a dynamic musical experience.

simplest player midi messages on one cord with arduino and solenoids + pitch bend with servo

The Helix at Home (HaH) is an Arduino-based MIDI controller using an Arduino Pro Micro, designed to manage buttons, potentiometers, and LEDs for controlling MIDI effects and channel settings, simulating a guitar pedalboard with customizable modes, an expression pedals, and a tap delay. Watch a video demo in the linked YT video