5,396 open source PCB designs, indexed by the chip they’re built around
Real boards from 2,616 public GitHub repositories, read straight from their KiCad files: size, layers, the full parts list and a render of the PCB. Find one close to what you’re building, then simulate its firmware on HardLabs before you order anything.
STM32SmartPrintCoreH7x
BoltzRnD
170.1 × 96.9 mm530 parts2LGPL-3.087
STM32IMpack
harrislab-brown
38 × 35.3 mm94 parts4LCC-BY-SA-4.04
STM32Esc rev b
iamdarshg
173.8 × 282.9 mm687 parts4LNo license2
STM32Avalon HW
YassineBakkali
118 × 89.6 mm215 parts4LMIT2
STM32KHATAF-F411
xXsenseiXx
51.9 × 52.8 mm67 parts4LNo license2
STM32Pdms
PGRacing
102.5 × 113.8 mm473 parts4LNo license1
STM32DRSSTC-Fiber-Optic-Interrupter
Alberto0235
150 × 100 mm197 parts4LMIT0
STM32Stm32-flight controller
bachaaymene
59 × 59 mm58 parts4LNo license0
STM32Esc rev b.before hand power replicate
170 × 172.2 mm681 parts6LNo license2
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?
5,396 boards from 2,616 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.