REFERENCE DESIGNS

Open hardware, with the files to prove it.

637 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

637

With a design page

637

KiCad projects

289

discrete6502

by epatel

A MOS 6502 CPU rebuilt from 4,051 discrete transistors on a 291x322mm six-layer board that reproduces the original die layout

13 0Custom

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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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