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.
ESP32Sra dev board 2026
SRA-VJTI
90.2 × 90 mm145 parts2LMIT80
ESP32Charge Controller
jharvey
139.7 × 88.9 mm157 parts2LNo license24
ESP8266Ikea fyrtur
mjuhanne
44.5 × 22.5 mm42 parts4LMIT22
STM32Bms hardware
jsphuebner
64.5 × 85.1 mm68 parts4LGPL-3.014
ESP32Zeen-AI-Plug
ampnics
105 × 58 mm71 parts2LNo license9
Raspberry PiLamoka1/2
bearjhartjen
122.7 × 124.8 mm126 parts2LCERN-OHL-W-2.07
STM32Custom BMS
SCFormulaElectric
104.2 × 59.7 mm192 parts4LNo license6
RP2040/RP2350RP2350-Eins
red-scorp
68.6 × 53.3 mm70 parts4LNo license5
ESP32WizServoTester
Abean2k
100 × 60.5 mm31 parts2LMIT3
USBC-LDO
25 × 13 mm9 parts2LNo license3
STM32Dragonfly
Broccoliux
66 × 58.8 mm226 parts4LMIT2
STM32KHATAF-F411
xXsenseiXx
51.9 × 52.8 mm67 parts4LNo license2
ESP32Corne Cherry
mornepousse
340.8 × 104.7 mm275 parts4LMIT1
ESP32Air filter controller
ademuri
41 × 149 mm162 parts4LNo license1
AVR/ArduinoBattery discharger
jkordek1
100 × 160 mm51 parts2LNo license1
ESP32Weather station
ismangoman
36 × 49.8 mm14 parts2LMIT1
ESP32AWS PROJECT
marydovika
206.3 × 91.3 mm207 parts2LNo license0
ESP32Penguin bot
jeevan9s
89.5 × 62.6 mm141 parts4LNo license0
ESP32Smart peltier driver esp32-v1
manhoosbilli1
94 × 48.1 mm84 parts2LNo license0
2040-artnode
dnewcome
100 × 70 mm80 parts4LNo license0
ESP32Hexapod Robot Board
EnejiOhieku
100 × 80 mm64 parts4LNo 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
ESP32Node-Smart-Clock
martinsram3k
95 × 54 mm41 parts2LNo license0
ESP32GameBoy-Mp3-Plater
amkhan2009
52.8 × 68.5 mm40 parts2LMIT0
ESP32Tuyyo-Hackclub
andaniayan-jpg
99.9 × 99.9 mm28 parts2LNo license0
NXP32Bit shift register
MaltWhiskey
100 × 54 mm56 parts4LNo license763
Raspberry PiLamoka1-DEV-board
70 × 30 mm48 parts2LCERN-OHL-W-2.07
ESP32ImogenWren
low-poly-studio
85.1 × 53.3 mm83 parts4LNo license5
BluePill base board with 3 MikroBUS sockets
michpro
96.5 × 81.3 mm40 parts2LCERN-OHL-P-2.03
ESP32Corne Cherry
169.3 × 198.4 mm275 parts4LMIT1
Power supply
Ciprian-LocalPulse
90 × 55 mm12 parts2LMIT1
PICTransmitter
38 × 72.6 mm27 parts4LNo license0
ESP32DIYBMS ESP32 Controller
stuartpittaway
122.5 × 87.6 mm90 parts2LCC-BY-NC-4.01.1k
ESP32Solar Powered Egg Incubator
jsitech4
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.