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.
ESP32ESP32
Chrismettal
66.4 × 48.1 mm70 parts2LCC-BY-SA-4.0446
ESP32Ble stepper motor analyzer
zapta
38.5 × 43 mm58 parts2LNo license58
ESP32Esp atx power
valletw
76.6 × 25.1 mm51 parts4LMIT28
ESP32Charge Controller
jharvey
139.7 × 88.9 mm157 parts2LNo license24
ESP32Iot esp eth com
uysan
29.5 × 64.5 mm146 parts4LCERN-OHL-P-2.019
ESP32Access controller
physiii
150 × 90 mm186 parts4LNo license13
ESP32Defcon32 badge
thehackbat
60 × 100 mm36 parts2LGPL-3.013
ESP32Hackbat esp32
100 × 40 mm59 parts2LNo license12
ESP32STM32L0-ESP32-Breakout-Board
mohamedyanis
50 × 50 mm31 parts4LBSD-3-Clause12
ESP32KRAKE
PubInv
137.2 × 83.8 mm195 parts2LAGPL-3.09
ESP32Zeen-AI-Plug
ampnics
105 × 58 mm71 parts2LNo license9
ESP32Iot leddriver hw
0xjmux
57 × 56 mm58 parts4LNo license9
ESP32Hardware
vivian-ng
99.5 × 99.5 mm128 parts2LNo license8
ESP32SensactHs
klaus-liebler
100 × 86.5 mm317 parts2LApache-2.04
ESP32IOS-MoonLamp
mkhairyx
60 × 60 mm33 parts2LNo license3
ESP32Pilot 6 axis
X-Lemon-X
171 × 83.9 mm125 parts2LMIT2
ESP32Mosaic x3
shashwtd
21 × 128 mm32 parts2LNo license2
ESP32Esp32-tiny led controller
t3mschm2d
33.5 × 33.5 mm25 parts4LNo license2
ESP32Corne Cherry
mornepousse
340.8 × 104.7 mm275 parts4LMIT1
ESP32Air filter controller
ademuri
41 × 149 mm162 parts4LNo license1
ESP32Msxnano dock
Papipapito
120 × 70 mm85 parts2LNo license1
ESP3230A-Home-Automation with-ESP32
SushantSaroch13
76 × 69.2 mm28 parts2LNo license1
ESP32PCB-Business-Card
Studented0
100 × 75 mm20 parts2LMIT1
ESP32DroneMagNav2.0
ajisrawi
128 × 84 mm218 parts4LCustom license0
ESP32Load Demand Response System
jsitech4
198.1 × 130.8 mm133 parts4LNo license0
ESP32Nft hydroponic controller
hasan-abuzaid
135 × 101.3 mm97 parts4LCERN-OHL-S-2.00
ESP32Smart peltier driver esp32-v1
manhoosbilli1
94 × 48.1 mm84 parts2LNo license0
ESP32Nescart
Keitark
99.7 × 63.9 mm84 parts6LMIT0
ESP32Hexapod Robot Board
EnejiOhieku
100 × 80 mm64 parts4LNo license0
ESP32InSomnia
kaorii-ako
100 × 80 mm53 parts2LNo license0
ESP32GameBoy-Mp3-Plater
amkhan2009
52.8 × 68.5 mm40 parts2LMIT0
ESP32Tuyyo-Hackclub
andaniayan-jpg
99.9 × 99.9 mm28 parts2LNo license0
ESP32Teknofest-Drone-AramaKurtarma
alikerem120215
75 × 50 mm17 parts2LNo license0
ESP32Navyug Submission
KrAnubhav
100 × 80 mm15 parts2LNo license0
ESP32Jay-Tab
Jay-Tai
109.3 × 90.7 mm12 parts2LMIT0
ESP32WebShooter
8aChristian
38 × 38 mm6 parts2LMIT0
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.