Open source PCB designs you can simulate
7,678 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.
MFOS Eight Stage Phase Shifter - Main
mzuelch
27.9 × 101.6 mm104 parts2LMIT165
Toolbox
StudioKAT
80.9 × 128.5 mm272 parts2LNo license11- schematic only · 141 parts
POGO
jeffmhopkins
141 partsNo license0 
Abakus Main
69.9 × 108 mm87 parts2LMIT165
Anthracite PCB (Top)
trope-oshw
60 × 102 mm176 parts4LCERN-OHL-S-2.01
VCF Diode Ladder Filter
27.9 × 101.6 mm65 parts2LMIT165
Baby 8
68.6 × 107.3 mm62 parts2LMIT165
AVR/ArduinoHAGIWO Sync LFO Main
29.2 × 101.6 mm50 parts2LMIT165
Buffered Multiple SMD Main
38.1 × 101.6 mm49 parts2LMIT165
Rectifier Main
38.1 × 101.6 mm33 parts2LMIT165
Envelope Follower Main
31.8 × 101.6 mm31 parts2LMIT165
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?
7,678 boards from 3,664 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.