REFERENCE DESIGNS

Open hardware, with the files to prove it.

912 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

912

With a design page

912

KiCad projects

419

Niubi Headphones

by strangeparts

Flexible circuit board design for adding a headphone jack to an iPhone 7

492 42MIT

RetroWiFiModem board, published by mecparts

KiCad source

Retro computing

RetroWiFiModem

by mecparts

An ESP8266 based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators

254 43GPL-3.0

Arduinocade board, published by rossumur

EAGLE source

Retro computing

Arduinocade

by rossumur

Play color retro games on an arduino with a few cheap components

161 23No license

Retro computing

TMS9918A

by jblang

TMS9918A video card for RC2014

145 24No license

KiCad source

Retro computing

zx Tsid

by UzixLS

MOS SID sound card for ZX Spectrum

22 5MIT

SHINSANWASWITCH board, published by steelpuxnastik

KiCad source

Retro computing

SHINSANWASWITCH

by steelpuxnastik

DIY-friendly photointerrupter microswitch/lamp holder 2-in-1 for generic 100mm Chinese arcade buttons. Enables an OBSA-LHSXF+OBSA-100UMQ-like setup at low cost with generic parts.

14 1MIT

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Microcontroller boards180 Keyboards & input devices102 Other boards75 Sensors & data acquisition64 Power & batteries64 Displays & LED62 Retro computing61 Audio & music57 Interfaces & adapters52 Motor control & robotics49 RF & wireless47 Computers & FPGA46 Test & measurement16 IoT & home automation14 Badges & art boards13 Automotive & vehicles5 Cameras & imaging5

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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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