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.
ESP32OMOTE - Open Universal Remote
OMOTE-Community
192.4 × 50 mm135 parts2LGPL-3.0142
ESP32Ups to esp32
aronreid
36 × 58 mm38 parts2LGPL-3.052
ESP32Charge Controller
jharvey
139.7 × 88.9 mm157 parts2LNo license24
ESP32Dif pressure meter
ardiloot
41 × 87 mm66 parts2LMIT23
ESP32Soldered-Inkplate-2-hardware design
SolderedElectronics
65.2 × 35.2 mm97 parts4LTAPR-OHL-1.013
ESP32CAN-to-WiFi-Converter-Dongle-
ampnics
47.5 × 71.5 mm68 parts2LNo license10
ESP32Hardware
vivian-ng
99.5 × 99.5 mm128 parts2LNo license8
ESP32Soldered Inkplate 4 TEMPERA with glass panel
72 × 78 mm246 parts4LTAPR-OHL-1.05
ESP32Soldered Inkplate 6
144.4 × 107.8 mm224 parts2LTAPR-OHL-1.05
ESP32ESP32 UniversalRemote
qvinhdao
130 × 130 mm53 parts2LNo license3
ESP32Dasduino-CONNECTPLUS-hardware design
63 × 25.9 mm51 parts2LTAPR-OHL-1.03
ESP32Solana badge
spacemandev-git
77.6 × 116.3 mm81 parts2LNo license2
ESP32ControllerTHT
deltaphi
260.4 × 132.1 mm64 parts2LGPL-3.02
ESP32OmniDrive
TLNKhanh
45 × 59.5 mm66 parts2LMIT1
ESP32StreamerBasic
alantrundle
108 × 60.9 mm51 parts2LNo license1
ESP32Load Demand Response System
jsitech4
198.1 × 130.8 mm133 parts4LNo license0
ESP32Prod board
family-mruby
90 × 70 mm125 parts4LCERN-OHL-S-2.00
ESP32Mk oniondao badge
majeedkhori
76.6 × 141.1 mm116 parts2LNo license0
ESP32Nft hydroponic controller
hasan-abuzaid
135 × 101.3 mm97 parts4LCERN-OHL-S-2.00
ESP32Tuyyo-Hackclub
andaniayan-jpg
99.9 × 99.9 mm28 parts2LNo license0
ESP32Soldered Inkplate 4 TEMPERA with glass panel panel
1.9 × 12 mm246 parts4LTAPR-OHL-1.05
ESP32Inkplate 6 SS panel
294.8 × 119.8 mm223 parts2LTAPR-OHL-1.05
ESP32Controller
35 × 124 mm54 parts2LGPL-3.02
ESP32Smart Home Energy Management System
198.1 × 130.8 mm133 parts4LNo license0
ESP32Dev board r2
90 × 70 mm109 parts4LCERN-OHL-S-2.00
ESP32SensactHsIO4
klaus-liebler
90 × 74.6 mm196 parts2LApache-2.04
ESP32Smart Hybrid IOT energy management System
198.1 × 130.8 mm133 parts4LNo license0
ESP32Solar Powered Egg Incubator
100 × 90.1 mm100 parts2LNo 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.