REFERENCE DESIGNS

Open hardware, with the files to prove it.

362 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

362

With a design page

362

KiCad projects

163

CH32X035 USB PD Tester

by wagiminator

USB Power Delivery Testing Device and Variable Power Supply

184 20Custom

AppleIIMini board, published by Cupcakus

EAGLE source

Power & batteries

AppleIIMini

by Cupcakus

Apple II Mini for C.H.I.P

137 7GPL-2.0

Battman Hardware board, published by raphaelchang

Altium source

Power & batteries

Battman Hardware

by raphaelchang

PCB designs for Battman lithium ion battery management system

60 22LGPL-3.0

Power & batteries

Chpc

by gonzho000

CHPC: Cheap Heat Pump Controller

58 23GPL-3.0

Boatcontrol board, published by antevens

KiCad source

Power & batteries

Boatcontrol

by antevens

A Relay PCB with a socket for a Raspberry Pi or Nvidia Jetson to control everything on a boat

36 5Custom

KiCad source

Power & batteries

Jlcsearch

by tscircuit

Find parts from JLCPCB matching design constraints (resistance values, capacitance, tolerance etc.)

33 221MIT

KiCad source

Power & batteries

Nikon Gps

by 4x1md

DIY GPS module for Nikon DSLR

30 3MIT

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Microcontroller boards73 Keyboards & input devices54 Computers & FPGA30 Retro computing30 Displays & LED23 Audio & music22 Sensors & data acquisition21 Motor control & robotics21 Power & batteries20 RF & wireless20 Interfaces & adapters16 Other boards14 IoT & home automation6 Test & measurement5 Badges & art boards5 Automotive & vehicles1 Cameras & imaging1

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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