REFERENCE DESIGNS

Open hardware, with the files to prove it.

887 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

887

With a design page

887

KiCad projects

405

Sirboard

by vul-os

Open hardware: 107 KiCad PCB designs — SMD-to-THT breakout adapters, ATTiny/ATMega/ESP development boards, and a 39-part sensor line on a common JST-SH connector.

55 17Apache-2.0

KiCad source

Retro computing

c2c 64

by jsanpe

A Composite & S-video to Component transcoder for the OSSC

37 4MIT

KiCad source

Retro computing

SwinsidNeat

by jsanpe

Yet another PCB layout of the nano SwinSID focusing on aesthetics

16 5MIT

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Microcontroller boards179 Keyboards & input devices100 Other boards71 Sensors & data acquisition61 Power & batteries60 Displays & LED60 Audio & music57 Retro computing57 Interfaces & adapters50 Motor control & robotics49 RF & wireless45 Computers & FPGA45 Test & measurement16 IoT & home automation14 Badges & art boards13 Automotive & vehicles5 Cameras & imaging5

Browse board families

ESP32ESP32 PCB design ArduinoArduino PCB design Raspberry Pi / RP2040Raspberry Pi PCB STM32STM32 PCB design Keyboard PCBkeyboard PCB design Power supplypower supply PCB design Battery chargerbattery charger PCB Motor controllermotor controller PCB Audio amplifieraudio amplifier PCB USB-CUSB-C PCB layout FPGAFPGA board design LoRaLoRa PCB design CAN busCAN bus PCB layout Dronedrone PCB design

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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