REFERENCE DESIGNS

Open hardware, with the files to prove it.

37 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

With a design page

KiCad projects

Easyduino

by Hanqaqa

Easily dive into different PCB KiCad designs of the most popular microcontroller devboards

745 36CERN-OHL-P-2.0

KiCad source

Interfaces & adapters

OCP2PCIe

by KCORES

OCP Mezzanine card V2.0 to standard PCIe slot adapter design

359 87GPL-3.0

Teensy Eurorack board, published by newdigate

KiCad source

Audio & music

Teensy Eurorack

by newdigate

Hardware Design: Eurorack shield for teensy 4.1 with 14 in / 16 out analog channels

258 26MIT

Electrical board, published by murexrobotics

KiCad source

Motor control & robotics

Electrical

by murexrobotics

Highly integrated electronics design and printed circuit boards (PCBs) for the MATE ROV Competition. Attempt the impossible.

192 6MIT

Browse by category

Keyboards & input devices10 Microcontroller boards8 Computers & FPGA5 Retro computing3 Power & batteries2 RF & wireless2 Motor control & robotics2 Audio & music2 IoT & home automation2 Interfaces & adapters1

Browse board families

ESP32ESP32 PCB design ArduinoArduino PCB design Raspberry Pi / RP2040Raspberry Pi PCB Keyboard PCBkeyboard PCB design Battery chargerbattery charger PCB Motor controllermotor controller PCB Audio amplifieraudio amplifier PCB FPGAFPGA board design LoRaLoRa PCB design Dronedrone PCB design

Repository topics

pcb 13 keyboard 10 kicad 8 electronics 6 arduino 6 diy 6 hardware 4 esp32 4

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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