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

Niubi Headphones

by strangeparts

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

492 42MIT

Retro computing

pico9918

by visrealm

A replacement for the classic TMS9918A/TMS9929A VDP, powered by a Raspberry Pi Pico

260 26MIT

Amiga 2000 EATX board, published by jasonsbeer

KiCad source

Retro computing

Amiga 2000 EATX

by jasonsbeer

An Amiga 2000 PCB in the EATX form factor.

198 23GPL-3.0

Altium Designer Notes And PCB Design Guidelines board, published by amiryeg

Altium source

Retro computing

Altium Designer Notes And PCB Design Guidelines

by amiryeg

How to design a standard PCB layout using Altium Designer

113 28No license

Retro computing

SNES FeRAM Cart

by soniccd123

Open Hardware SNES Cartridge with save capability

87 17No license

rc2014 ym2149 board, published by electrified

KiCad source

Retro computing

rc2014 ym2149

by electrified

KiCad schematics and gerbers for a YM sound card for the RC2014. See it in action here: https://www.youtube.com/watch?v=-iLwi9FagFE

78 17Custom

Gameboy Color Cartridge board, published by Xyl2k

EAGLE source

Retro computing

Gameboy Color Cartridge

by Xyl2k

Board layout for an eeprom powered GB cartridge

75 23Unlicense

Retro computing

pi Tin

by jackw01

Open source raspberry pi handheld retro gaming console

73 10CERN-OHL-W-2.0

Kicad amiga2000 board, published by rhaamo

KiCad source

Retro computing

Kicad amiga2000

by rhaamo

Amiga 2000 revision 6.2 motherboard re-done in KiCAD. WARNING: stability issue with Wicher 500i, could be noise related from accelerator speed.

33 9CC0-1.0

KiCad source

Retro computing

zx Tsid

by UzixLS

MOS SID sound card for ZX Spectrum

22 5MIT

Retro computing

LENINGRAD 2 48k

by Alex-2-Graf

Leningrad-2. Russian ZX Spectrum clone (2025 Revision). Modernized schematic & PCB with onboard RGB2VGA/HDMI converter, AY-3-8910 sound, and expansion bus adapters.

11 4MIT

pi Rgb Cable Sync Mixer board, published by KabukiFlux

KiCad source

Retro computing

pi Rgb Cable Sync Mixer

by KabukiFlux

Small PCB mod to mix the sync in the RGBpi cable to solve sync issues

9 1MIT

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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

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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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