REFERENCE DESIGNS

Open hardware, with the files to prove it.

362 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

362

With a design page

362

KiCad projects

163

Haxo hw

by cardonabits

Haxophone, an electronic musical instrument that resembles a saxophone

672 20Custom

Eurorack Pcbs board, published by nickajeglin

KiCad source

Audio & music

Eurorack Pcbs

by nickajeglin

A collection of easy to solder DIY eurorack PCB's

207 14No license

KiCad source

Audio & music

Pico Dco

by polykit

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

161 16No license

pc Kharon 386 board, published by UzixLS

KiCad source

Audio & music

pc Kharon 386

by UzixLS

Tiny IBM PC compatible machine with 386 CPU, integrated VGA and sound.

109 14CC-BY-SA-4.0

Printable Instruments board, published by 30350n

KiCad source

Audio & music

Printable Instruments

by 30350n

PCB panels for Mutable Instruments eurorack modules

75 14Custom

zx Multisound board, published by UzixLS

KiCad source

Audio & music

zx Multisound

by UzixLS

ZX Spectrum soundcard for NEMOBUS/ZXBUS

37 19MIT

MIDI4MiSTer board, published by KabukiFlux

KiCad source

Audio & music

MIDI4MiSTer

by KabukiFlux

MiSTer user port MIDI output and input PCB

13 0MIT

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Microcontroller boards73 Keyboards & input devices54 Computers & FPGA30 Retro computing30 Displays & LED23 Audio & music22 Sensors & data acquisition21 Motor control & robotics21 Power & batteries20 RF & wireless20 Interfaces & adapters16 Other boards14 IoT & home automation6 Test & measurement5 Badges & art boards5 Automotive & vehicles1 Cameras & imaging1

Browse board families

ESP32ESP32 PCB design ArduinoArduino PCB design Raspberry Pi / RP2040Raspberry Pi PCB STM32STM32 PCB design Keyboard PCBkeyboard PCB design Power supplypower supply PCB design Battery chargerbattery charger PCB Motor controllermotor controller PCB Audio amplifieraudio amplifier PCB USB-CUSB-C PCB layout FPGAFPGA board design LoRaLoRa PCB design CAN busCAN bus PCB layout Dronedrone PCB design

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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