REFERENCE DESIGNS

Open hardware, with the files to prove it.

637 published boards whose schematic and layout source is public — KiCad, EAGLE, Altium and EasyEDA projects you can read, fork and build on. Every entry links to the original repository and names its licence.

Boards indexed

637

With a design page

637

KiCad projects

289

Teensy Eurorack

by newdigate

Hardware Design: Eurorack shield for teensy 4.1 with 14 in / 16 out analog channels

258 26MIT

KiCad source

Audio & music

Pico Dco

by polykit

Polyphonic Digitally Controlled Oscillator (DCO) controlled by Raspberry Pi Pico PIO

161 16No license

Teensy Control Voltage board, published by newdigate

KiCad source

Audio & music

Teensy Control Voltage

by newdigate

Hardware Design: 16 channel analog control voltage shield for teensy 4.1; 8ch in / 8ch out; +-10V @ 16bits/sample;

27 5MIT

Eurorack Multi Saturation Module board, published by DIYSynthMNL

KiCad source

Audio & music

Eurorack Multi Saturation Module

by DIYSynthMNL

A multi saturation module with voltage controlled wet/dry mix

22 3GPL-3.0

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Repository topics

Every project listed here belongs to its author and is linked to its original repository. Licences are read from the repository metadata and summarised for convenience — check the licence file in the project itself before you manufacture or redistribute a design. ProtoFlow does not host, mirror or verify these files. Index last rebuilt 2026-09-21.

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