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.
STM32Cheap-FOCer-2
shamansystems
59.1 × 99.9 mm165 partsNo license405
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- schematic only · 9 partsSTM32
MetaForge
FidelOdok
9 partsCustom license8 
ESP32Esp
0Zane
100 × 80 mm82 parts2LMIT5
STM32FOC KING
b264
75.2 × 99.5 mm238 parts4LNo license3
ESP32WizServoTester
Abean2k
100 × 60.5 mm31 parts2LMIT3
STM32Dragonfly
Broccoliux
66 × 58.8 mm226 parts4LMIT2
STM32UltraHawk
InSynchronous
50 × 87 mm76 parts2LMIT2
STM32KHATAF-F411
xXsenseiXx
51.9 × 52.8 mm67 parts4LNo license2
STM32619-J Stepper
jawher-Mansour
42 × 42 mm63 parts4LNo license2
STM32PCB DRONE C8
ArduProject
102 × 49 mm140 parts4LMIT1
STM32SwanStabilizer-FlightStabilizer
kappyphm
30 × 40 mm27 parts2LMIT1
ESP32DroneMagNav2.0
128 × 84 mm218 parts4LCustom license0
ESP32Penguin bot
jeevan9s
89.5 × 62.6 mm141 parts4LNo license0
Raspberry PiMini one
esicoe
50 × 70 mm112 parts4LNo license0
ESP32Hexapod Robot Board
EnejiOhieku
100 × 80 mm64 parts4LNo license0
ESP32Dronemagnav
Comrade-rn
64 × 60 mm56 parts4LCustom license0
ESP32Philobot
dish-glitch
116 × 116 mm56 parts2LNo license0
EEE3088F-Design-Project
maarijbhai
80.6 × 61 mm54 parts2LNo license0
PICReceiver
finnhittson
30.6 × 67.9 mm42 parts4LNo license0
ESP32Teknofest-Drone-AramaKurtarma
alikerem120215
75 × 50 mm17 parts2LNo license0
ESP32Navyug Submission
KrAnubhav
100 × 80 mm15 parts2LNo license0
ESP32Lsa
61.9 × 24.2 mm16 parts2LMIT80
ESP32ESP32 Plotter Controller revB1 unrouted
99.1 × 55.4 mm49 parts2LMIT9
PICTransmitter
38 × 72.6 mm27 parts4LNo license0
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.