Open source music hardware projects

This list of open source music hardware projects includes brands or projects relative to electro-music where schematics and firmaware are open-source. However it also includes projects which are not fully open source hardware as defined by the Open Source Hardware Association.

Amplifiers

 * AX84, a variety of music electronics projects.

Mixers

 * Aurora, music mixer for DJ's

Controllers

 * Monome
 * O0SCC - controller that communicates via the open sound control protocol.
 * Open Pipe
 * OpenPipe
 * Vectr 3D Sensing Controller

Enclosures

 * Eurorack Lasercut Case

MIDI

 * MIDIbox - The MIDIbox project is an open-source modular DIY hardware and software platform for MIDI devices like controllers, synthesizers, sequencers
 * MIDIsense

Synthesizers and modules

 * Barton Musical Circuits
 * Bastl Instruments
 * Befaco
 * eChanter
 * GMSN!
 * HackMe
 * Mad Science Lab SSM1
 * MeeBlip anode
 * Music Thing Modular
 * Mutable Instruments
 * One Bit Groove Box
 * PreenFM2
 * xnotox on GitHub
 * Adafruit Industries, more than just x0xb0x
 * Zoybar
 * Zynthian

Sequencers

 * Rebel Technology Stoicheia
 * Lötklaus Pro - an Arduino based sequencer

Microcontrollers

 * Arduinome

Resources

 * Adafruit Industries
 * Zoybar social network

Tools & test equipment

 * DSO Nano, a a pocket size digital storage oscilloscope.