4,840 open source PCB designs, indexed by the chip they’re built around
Real boards from 2,339 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.
ESP32Sra dev board 2026
SRA-VJTI
90.2 × 90 mm145 parts2LMIT80
ESP32Ble stepper motor analyzer
zapta
38.5 × 43 mm58 parts2LNo license58
ESP32Open-ESPilot
Tomas-Kuchta-FPV
50.6 × 71.1 mm98 parts2LCERN-OHL-W-2.018
ESP32Dronemagnav
ajisrawi
64 × 60 mm56 parts4LCustom license11
ESP32ESP32 Plotter Controller revB1
MarkJB
99.1 × 55.4 mm57 parts2LMIT9
ESP32Esp
0Zane
100 × 80 mm82 parts2LMIT5
ESP32WizServoTester
Abean2k
100 × 60.5 mm31 parts2LMIT3
ESP32Lsa
61.9 × 24.2 mm16 parts2LMIT80
ESP32ESP32 Plotter Controller revB1 unrouted
99.1 × 55.4 mm49 parts2LMIT9
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?
4,840 boards from 2,339 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.