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

AltiumDesigner PcbLibrary

by KitSprout

AD 元件庫，AltiumDesigner PCB Library

670 237No license

Altium source

Keyboards & input devices

waffling60

by 4pplet

Multi layout 60% PCB with support for common ANSI and ISO layouts and split space. SE-version is for use in Polaris, DB-version for use in Bakeneko/Kei.

99 16Custom

yasir-shahzad Altium Library board, published by yasir-shahzad

Altium source

Microcontroller boards

yasir-shahzad Altium Library

by yasir-shahzad

🖥️ Altium Library with 4000+ components! 🛠️ It ensures design accuracy 📐 and includes 3D STEP models 📏✨—perfect for engineers! 🚀😊 Let me know if you need more! 👍

39 2GPL-3.0

Altium source

Sensors & data acquisition

Personal Altium Library

by ddtdanilo

Curated Altium Designer schematic symbols and PCB footprints with verified inventory, documentation, and integrity checks.

21 4CERN-OHL-P-2.0

Altium source

Badges & art boards

Pcb Standard

by spacelab-ufsc

Components libraries, project templates and other PCB related files

16 2CC-BY-SA-4.0

SMotlaq Altium Library board, published by SMotlaq

Altium source

Badges & art boards

SMotlaq Altium Library

by SMotlaq

A custom Altium Designer library that I created over 5 years. It includes custom footprints and schematic symbols for various components. 🛠📐

8 0MIT

BeatNTweet HA220 board, published by patsaoglou

Altium source

Audio & music

BeatNTweet HA220

by patsaoglou

Headphone Amplifier project featuring the NE5532 OP-Amp and a powerful Class AB output stage

8 0MIT

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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

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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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