DIY electronic music instruments, built by makers.
open hardware designs, modular firmware libraries, and free plugins for electronic musicians. Understand it, adapt it, build it yourself — all community-driven and MIT licensed.
Open all the way down
Every layer of the stack is open — from the copper traces to the source code — so you can learn, remix, and truly own your instruments.
Open Hardware
Thoughtfully crafted designs freely available for you to use, adapt, and distribute under open licenses.
Open Firmware
Modular, multi-architecture libraries freeing you from vendor lock-in and platform constraints.
Open Source
MIT licensed releases enabling you to understand, adapt, and collaborate on our projects.
Our top 3 projects
A DSP plugin, a hardware sequencer, and a firmware library, open source, free to use, and free to build.
DSP PluginJC-303
A free Roland TB-303 emulation plugin for Windows, macOS and Linux. Ships as VST2, VST3, LV2, CLAP and AU.
SequencerAciduino
Affordable and DIY: a Roland TB-303 and TR-808 step sequencer clone and MIDI controller you can build yourself.
LibraryµClock
A tight music clock generator for Arduino and PlatformIO using hardware timer interruption.
Help us turn open designs into kits you can buy
Every schematic, board file, and line of firmware we publish stays open and free. We're now moving into producing our own kits and assembled devices, for makers who'd rather buy one than build it from raw files. Support at this stage funds prototypes, components, and the first manufacturing runs. It's optional, it's temporary, and it's genuinely appreciated.
Want to build your own instruments?
Get involved via our Discord server. All projects are open source and community-driven — share builds, ask questions, and help shape what comes next.