REFERENCE DESIGNS

Open hardware, with the files to prove it.

612 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

612

With a design page

612

KiCad projects

275

pc Kharon 386

by UzixLS

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

109 14CC-BY-SA-4.0

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

zx Multisound board, published by UzixLS

KiCad source

Audio & music

zx Multisound

by UzixLS

ZX Spectrum soundcard for NEMOBUS/ZXBUS

37 19MIT

Audio & music

OPL2LPT Replica

by zjuyzj

A re-designed, simplified version of OPL2LPT Adlib-Compatible sound card working on printer port.

32 7MIT

KiCad source

Audio & music

picogus104

by UzixLS

PicoGUS sound card for PC/104 interface

23 2No license

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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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