Open source PCB designs you can simulate
6,828 boards
Every public KiCad project we can find on GitHub, with its processor, full parts list and a render of the board. Any of them can be brought up in simulation: open one and run firmware on it before you order a single PCB.
RP2040/RP2350Riptide
SharKingStudios
330 × 123 mm250 parts2LMIT18
RP2040/RP2350SnakeBoard
Nadoooor
315 × 152.4 mm193 parts2LMIT5
RP2040/RP2350Keyboard
ayaangrover
347.1 × 119.7 mm169 parts2LNo license5
RP2040/RP2350Seed75
ikrishagarwal
317.8 × 133.5 mm168 parts2LAGPL-3.03
RP2040/RP2350Krunchboard
krunchiekrunch
427.6 × 139.1 mm200 parts2LCustom license2
RP2040/RP2350Krunchboard-90
324 × 122.1 mm187 parts2LCustom license2
RP2040/RP2350Keeb colon three
BananerCatter
369.3 × 148.8 mm166 parts2LNo license2- schematic only · 61 partsRP2040/RP2350
Sten0
pizzalover125
61 partsNo license2 
RP2040/RP2350New-Keeb
Osaidii
340.1 × 130 mm298 parts2LApache-2.01
RP2040/RP2350Keeb
qubixal
345 × 120 mm203 parts2LNo license1
RP2040/RP2350Chaney--Board
Anayjain1129
345.2 × 129.2 mm165 parts2LNo license1
RP2040/RP2350MochaDeck
FabioCanavarro
348.5 × 142.5 mm153 parts2LNo license1
RP2040/RP2350LK56HS
lambdakb
247.7 × 95.3 mm143 parts2LCERN-OHL-S-2.01
RP2040/RP2350Winter60
aryan-madan
352.2 × 101.3 mm137 parts2LGPL-3.01
RP2040/RP2350LK16C
76.2 × 76.2 mm38 parts2LCERN-OHL-S-2.01
RP2040/RP2350CTRL-AI-Macropad
RishabhMewada
96.3 × 68.8 mm22 parts2LMIT1
RP2040/RP2350Macropad
RedstoneGuy9248
87.5 × 70.5 mm20 parts2LNo license1
RP2040/RP2350Custom keyboard
HACKERHSB1453
178.2 × 127.1 mm267 parts2LNo license0
RP2040/RP2350FlexKey
dushyantyadav0303
345 × 124 mm253 parts2LMIT0
RP2040/RP2350Mechanical-Keyboard
Bihyungbetter
360 × 155 mm249 parts2LNo license0
RP2040/RP2350Ketchuboard
Ketchupism
393.2 × 141.1 mm164 parts2LNo license0
RP2040/RP2350MechaCore
aryanprabhuin-ship-it
298.8 × 136 mm128 parts2LNo license0
RP2040/RP2350Split keyboard
AYUSH-pro-grammer
230.5 × 167.5 mm94 parts2LNo license0
RP2040/RP2350Learnboard
bobis1
281.4 × 126 mm55 parts2LNo license0
RP2040/RP2350Keyboardcontroller
Marc-Blanco
235 × 140 mm21 parts2LMIT0
RP2040/RP2350Single panel
22.1 × 52 mm203 parts2LNo license1
RP2040/RP2350Msxnano board8020
Papipapito
85 × 56 mm39 parts4LNo license1
About these open source PCB designs
Every board here is a published hardware project: a public GitHub repository with KiCad design files and a bill of materials. HardLabs reads those files directly — the board outline for its size, the copper layers, every footprint for the parts list — and draws the render from the layout itself, so what you see is the design as committed rather than a product photo.
Boards are indexed by the microcontroller they are built around, by what they are for, and by every IC and module on them. That makes the gallery a quick way to find a reference design: look up a part number to see how other engineers power, decouple and connect it.
Using an open source board as a reference design
- Find boards built on your chip or with the part you are designing around.
- Compare their size, layer count and bill of materials, and open the KiCad files on GitHub.
- Check the license before reusing any of the design.
- Simulate the firmware on HardLabs to test your changes before you order a PCB.
Open source PCB designs: common questions
What is an open source PCB?
A printed circuit board whose design files — schematic, layout and bill of materials — are published for anyone to study and, depending on the license, to modify and manufacture.
Are these PCB designs free to use?
It depends on each project's license. Open hardware licenses such as CERN-OHL and CC BY-SA, and software licenses such as MIT, allow reuse on their terms; a repository with no license keeps all rights with its author. Every board page shows its license.
What design files do the boards come with?
They are KiCad projects: the .kicad_pcb layout and the schematic (or a netlist from older KiCad versions), plus a bill of materials, usually a CSV. Each board page links to those files in the original GitHub repository.
How do I find boards that use a specific part?
Search for the part number, or open the part's page from the list of parts. It shows every board built with that part and the parts most often used alongside it.
How many boards are there, and how often is the list updated?
6,828 boards from 3,344 repositories today. New projects are found and added every night.
Can I test a board's firmware before ordering the PCB?
Yes. HardLabs builds a simulation of a board from its netlist and BOM, so you can boot and debug firmware against it with no hardware on your desk.