Open source PCB designs you can simulate
20,833 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.
ESP32LCDZapperPro
charcole
90 × 76.5 mm110 parts2LCC-BY-NC-4.0161
ESP32ESP32BB
asukiaaa
43.2 × 61 mm27 parts2LNo license57
ESP32Iotuz esp32-hardware
CCHS-Melbourne
150 × 95 mm97 parts2LTAPR-OHL-1.035
ESP32Badge2017
cryptovillage
95.2 × 154.5 mm129 parts2LNo license31
ESP32Badge2018
124.3 × 113.5 mm97 parts4LNo license17
ESP32ZX21
fordp2002
142 × 100 mm125 parts2LBSD-3-Clause9
ESP32Hardware
vivian-ng
99.5 × 99.5 mm128 parts2LNo license8
ESP32Crazyflie control board
sPyOpenSource
40.1 × 38.1 mm92 parts4LMIT8
ESP32Meteo station
alicjamusial
110 × 90 mm23 parts2LCC-BY-SA-4.08
ESP32Esp32stack
3.2 × 3.2 mm27 parts2LNo license7
ESP32Uamsense
GNB-UAM
69.7 × 95.9 mm72 parts2LGPL-3.04
ESP32Load Demand Response System
jsitech4
198.1 × 130.8 mm133 parts4LNo license0
ESP32Shuttle
uli
50 × 50 mm19 parts2LNo license48
ESP32ESP32 battery management module
KomplexKapharnaum
56.5 × 57.5 mm98 parts4LMIT4
ESP32Smart Home Energy Management System
198.1 × 130.8 mm133 parts4LNo license0
ESP32Audio board for ESP32 module
39.8 × 44.5 mm26 parts2LMIT4
ESP32Smart Hybrid IOT energy management System
198.1 × 130.8 mm133 parts4LNo license0
ESP32Audio board for ESP32 module
99 × 109 mm26 parts2LMIT4
ESP32Solar Powered Egg Incubator
100 × 90.1 mm100 parts2LNo license0
ESP32Audio board for ESP32 module
99 × 109 mm26 parts2LMIT4
ESP32Predictive Maintenance System for Industrial Motor
108.8 × 83.6 mm81 parts2LNo license0
ESP32KXKM esp remote control module
48.9 × 70.8 mm20 parts2LMIT4
ESP32Smart Transformer Health Monitoring System
108.8 × 83.6 mm81 parts2LNo license0
ESP32Dual Axis Solar Tracker
101.2 × 76.6 mm75 parts2LNo license0
ESP32Solar Powered Irrigation System
91.6 × 57.8 mm70 parts2LNo license0
ESP32Smart Posture Corrector
105.6 × 92.7 mm64 parts2LNo license0
ESP32Motion Detection and Alarm Mesh System
67.3 × 100 mm59 parts2LNo license0
ESP32Water Level Monitor and Control
88.6 × 88.7 mm51 parts2LNo license0
ESP32PCB para Alarma IoT
brengi
50 × 50 mm19 parts2LNo license7
ESP32NFC Card Payment System
97.8 × 137.6 mm41 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?
20,833 boards from 10,409 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.