REFERENCE DESIGNS

Open hardware, with the files to prove it.

562 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

562

With a design page

562

KiCad projects

253

RPi RRCircuits

by RobertPHeller

A collection of circuit designs for various MCUs, not just Raspberry Pis relating to Model Railroading

24 3Custom

NIMRS 21Pin Decoder board, published by CDFER

KiCad source

Microcontroller boards

NIMRS 21Pin Decoder

by CDFER

An open source 21-Pin DCC Decoder for model trains

20 3No license

KiCad source

Microcontroller boards

IoT12

by atoomnetmarc

Schematic, PCB files, firmware and 3d models for creating the IoT12 solder iron temperature controller for T12 compatible tips.

14 5Apache-2.0

Browse by category

Microcontroller boards107 Keyboards & input devices73 Power & batteries38 Other boards38 Audio & music37 Displays & LED37 Retro computing37 Sensors & data acquisition36 Motor control & robotics36 Computers & FPGA34 Interfaces & adapters28 RF & wireless26 Test & measurement10 IoT & home automation10 Badges & art boards8 Automotive & vehicles4 Cameras & imaging3

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.

Loading…