REFERENCE DESIGNS

Open hardware, with the files to prove it.

662 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

662

With a design page

662

KiCad projects

299

RetroWiFiModem

by mecparts

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

254 43GPL-3.0

Computers & FPGA

Pico 56

by visrealm

The HBC-56 (65C02/TMS9918A/AY-3-8910 retro computer) fully emulated on a Raspberry Pi Pico

171 19MIT

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

KiCad source

Retro computing

Retroreflectors

by mossmann

RF retroreflectors

104 20GPL-2.0

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

Retro computing

pi Tin

by jackw01

Open source raspberry pi handheld retro gaming console

73 10CERN-OHL-W-2.0

Retro computing

SN76489

by jblang

SN76489 Sound Card for RC2014

52 14No license

Audio & music

ES688 ISA8

by hkzlab

Sound Card for the ISA (8bit) bus sporting Sound Blaster / Sound Blaster PRO emulation via ES688F chip, and a real Yamaha OPL3 FM Synth. It's also completely jumper configurable.

46 8Custom

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

Audio & music

Dendy

by UzixLS

Yet another Dendy (Famicom) clone - 8-bit home video game console

19 1No license

ISA DualUARTParport board, published by hkzlab

KiCad source

Interfaces & adapters

ISA DualUARTParport

by hkzlab

8 bit ISA Parallel port + dual UART adapter

18 5Custom

Retroverse board, published by transistorfet

KiCad source

Retro computing

Retroverse

by transistorfet

A collection of VME-based hardware and software for modular computers

17 2Custom

Interfaces & adapters

386DX QFP PGA Adapter

by hkzlab

A QFP -> PGA adapter for 386DX CPUs

17 2CC-BY-SA-4.0

Duplicanator Scart Duplicator board, published by KabukiFlux

KiCad source

Power & batteries

Duplicanator Scart Duplicator

by KabukiFlux

Duplicanator the Scart Duplicator

11 2MIT

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Microcontroller boards131 Keyboards & input devices83 Retro computing47 Power & batteries45 Displays & LED44 Sensors & data acquisition43 Audio & music43 Other boards42 Motor control & robotics40 Computers & FPGA39 Interfaces & adapters36 RF & wireless30 Test & measurement11 IoT & home automation11 Badges & art boards10 Automotive & vehicles4 Cameras & imaging3

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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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