Resources
Reference material worth knowing about if you build Eurorack modules. These sit alongside the builds directory: places to find designs it does not cover, archives of circuits older than any repo, and a simulator for working out what a circuit does.
Finding designs
Directories that point at far more open designs than any one site can list.
- List of synth DIY repositories (sdiy.info)
A community-maintained index of over a hundred GitHub accounts publishing synth designs. If a maker is missing from this directory, start here.
- Online resources (sdiy.info)
The wider synth DIY landscape: forums, courses, parts sources, book scans and long-running project sites.
Circuits and schematics
Where to read the actual circuits, including designs that predate GitHub.
- electro-music schematics vault
A deep archive of synth schematics collected over decades, covering classic and obscure circuits you will not find in a repo.
- Mutable Instruments source
The hardware and firmware behind every Mutable module. Widely cloned and adapted, so it is the upstream for a lot of what people build. Code is MIT, hardware CC BY-SA 3.0.
Tools
For understanding a circuit before you order parts for it.
- Falstad circuit simulator
Runs in the browser and animates current as it flows. Good for building intuition about a filter or oscillator stage before committing to a build.
Know something that belongs here? Send it over.