REFERENCE DESIGNS

Open hardware, with the files to prove it.

712 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

712

With a design page

712

KiCad projects

324

Open Gamma Detector

by OpenGammaProject

☢️👁️ Hardware for a hackable DIY gamma-ray spectrometer using a popular NaI(Tl) scintillator, SiPM and a Raspberry Pi Pico.

374 52GPL-3.0

Mppt 2420 lc board, published by LibreSolar

KiCad source

Power & batteries

Mppt 2420 lc

by LibreSolar

Hackable and open source MPPT solar charge controller

232 53CC-BY-SA-4.0

Displays & LED

Yatchy

by Szybet

A modular, hackable, improved watchy like watch

179 8No license

Sensors & data acquisition

AIOsense

by Schluggi

ESPHome based all-in-one sensor

162 30MIT

KiCad source

Retro computing

Pi1541io

by hackup

Raspberry Pi extension board for the PI1541 project.

108 24CC-BY-SA-4.0

ZEReader KiCad board, published by Allegra42

KiCad source

Displays & LED

ZEReader KiCad

by Allegra42

ZEReader is an open source hardware and software E-Book Reader platform. Originally developed as a bachelor's thesis in electrical engineering, the project now evolves as a hobby initiative dedicated to further develop this hackable and customizable platform.

65 3CERN-OHL-S-2.0

Klangorium board, published by hexagon5un

KiCad source

Audio & music

Klangorium

by hexagon5un

Hardware and tutorials for the Hackaday / Logic Noise Klangorium demo board

65 16No license

Openeew Sensor board, published by openeew

KiCad source

Sensors & data acquisition

Openeew Sensor

by openeew

Hardware for an OpenEEW sensor

49 13Apache-2.0

Power & batteries

PipBoy Pi5

by SurvivorGrim

PipBoy-Pi5 Project. A how to guide on building your own functional PipBoy from Fallout!

48 6No license

RF & wireless

PowerRiser

by nandfarm

PowerRiser – NVMe 2230 and 2242 Expansion board for Lenovo Tiny 5 Series

27 1CERN-OHL-S-2.0

KiCad source

Keyboards & input devices

Xwhatits Capsense Controller

by BASLQC

A GPLv3 Keyboard Controller created by xwhatit from Geekhack for IBM Model F and Beamspring capacitive keyboards. Archived by the BASLQC on Github.

24 9GPL-3.0

Displays & LED

Universal Led Board

by Loewe111

PCB for controlling LED Strips with WLED, made to fit into a DIN Rail Breaker Box

15 3MIT

KiCad source

Test & measurement

Open Source Multimeter

by PreferLinux

Source repository for https://hackaday.io/project/10820-open-source-multimeter

14 4GPL-3.0

Ikea Molgan Hack board, published by Yveaux

EAGLE source

Microcontroller boards

Ikea Molgan Hack

by Yveaux

Ikea Molgan PIR LED light hack to add wireless Arduino functionality

11 4GPL-3.0

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Microcontroller boards139 Keyboards & input devices89 Retro computing51 Power & batteries50 Sensors & data acquisition48 Displays & LED48 Audio & music47 Other boards46 Motor control & robotics42 Computers & FPGA41 Interfaces & adapters37 RF & wireless33 Test & measurement12 IoT & home automation12 Badges & art boards10 Automotive & vehicles4 Cameras & imaging3

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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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