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.
ESP32SmartSPin2k
doudar
57.2 × 60.3 mm79 parts2LGPL-2.0283
ESP32KbxIRBlaster
kbx81
69.9 × 66.5 mm86 parts2LCC-BY-SA-4.056
ESP32ESP32 Plotter Controller revB1
MarkJB
99.1 × 55.4 mm57 parts2LMIT9
ESP32Hardware
vivian-ng
99.5 × 99.5 mm128 parts2LNo license8
ESP32Petdisk esp32
yo5ptd
75 × 49.8 mm31 parts2LGPL-3.06
ESP32Ftdi development boards
leonardoward
104 × 81 mm55 parts2LApache-2.05
ESP32ESP32MiniDrop
stasiselectronics
74 × 54 mm25 parts2LCERN-OHL-S-2.04
ESP32PriusG2
ksmola
147.8 × 65 mm145 parts4LNo license3
ESP32Esp32lcd
cjheath
78 × 44 mm30 parts2LNo license3
ESP32Eja m
51.2 × 97.5 mm91 parts4LApache-2.02
ESP32Co2-Sensor-Hardware
twam
45 × 65 mm69 parts2LNo license2
ESP32UltiCore-V1-PLC
paulmartinezcuenta
110 × 90 mm192 parts4LMIT1
ESP32LV PCB
luftaquila
293.1 × 125.3 mm159 parts2LNo license1
ESP32NEAToBOARD
halfmarble
100 × 60 mm110 parts2LCERN-OHL-P-2.01
ESP32GameBoy-Mp3-Plater
amkhan2009
52.8 × 68.5 mm40 parts2LMIT0
ESP32SmartSPin2k
189.5 × 204.9 mm79 parts2LGPL-2.0283
ESP32ESP32 Plotter Controller revB1 unrouted
99.1 × 55.4 mm49 parts2LMIT9
ESP322xpetdisk esp32
75 × 100 mm31 parts2LGPL-3.06
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.