Open source PCB designs you can simulate
23,543 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.
ESP32Osciloscope-ESP32
cristobalcuevas
137.5 × 42.5 mm79 parts2LNo license4
ESP32Bench psu monitor
fixthepixel
110 × 80 mm35 parts2LCustom license4
ESP32Robocup-2025
La-Quiche-Industrielle
173.5 × 150.4 mm12 parts2LMPL-2.04
ESP32ESP32Pet
dishishshawn
82.3 × 79 mm11 parts2LNo license4
ESP32Plant Partner PCB 1.0
aboler
148.3 × 69 mm82 parts2LNo license3
ESP32ShrackThingy
bismarx-v1
230 × 100 mm153 parts2LNo license2
ESP32ESPDrive
Ehryk
44 × 64 mm53 parts4LBSD-3-Clause2
ESP32Main Board
Ensmasteel
200 × 100 mm48 parts2LNo license2
ESP32VX-Solenoid-Engine
SunritHazra
120 × 80 mm33 parts2LNo license2
ESP32ARGB-WLED-PC-Controller
jwidess
1 parts2LAGPL-3.02
ESP32BLUE-ME ESP32 hard
facundosala
61 × 117.2 mm53 parts2LNo license1
ESP32PCB 1
Nigonzalezf
100 × 100 mm12 parts2LMIT1
ESP32Microcontroller Schematics
AlexFinns
79.4 × 70 mm49 parts2LNo license0
ESP32Solar wifi weather station v3.3.5
3ddruck12
86.2 × 100 mm39 parts2LCC-BY-NC-4.00
ESP32Autohealer
sarpharaj-09
101.6 × 78.8 mm36 parts2LNo license0
ESP32Embeddster
alheir
117.4 × 63 mm36 parts2LMIT0
ESP32Kicad tugas akhir
nanangcreacoll
120 × 100 mm31 parts2LNo license0
ESP32PC and Light Controller
HighCarlSagan
81.2 × 58.9 mm28 parts2LCustom license0- schematic only · 20 partsESP32
Lisbon av install
squaretaper
20 partsNo license0 - schematic only · 19 partsESP32
Eletrifica
brigsd
19 partsMIT0 
ESP32MATRIZ COCHE COMPETENCIA
OttoDotto
62 × 95 mm186 parts2LNo license3
ESP32Plant Partner PCB v2
70 × 65.6 mm74 parts2LNo license3
ESP32ESPRadiator
50 × 57 mm49 parts2LBSD-3-Clause2
ESP32PCB-Sami-2023
Ezecarp36
75 × 40 mm11 parts2LNo license2
ESP32LineMazeSolver
114 × 84 mm24 parts2LNo license1
ESP32Circuit for 1st Milestone
Ammar-Bin-Amir
68.6 × 47 mm13 parts2LNo license1
ESP32Drone
Tomnwol
53.1 × 93.3 mm11 parts2LNo license1
ESP32PlacaPrueba
TomasOsP
92.4 × 64.2 mm12 parts2LCC-BY-4.00
ESP32Circuit for 2nd Milestone Updated
57.9 × 39.6 mm10 parts2LNo license1
ESP32ESPSauna
68.5 × 62 mm45 parts2LBSD-3-Clause2
ESP32Circuit for 2nd Milestone
54.6 × 46.9 mm8 parts2LNo license1
ESP32ThePreamp-Controller
Gninnorg
336 × 44.5 mm25 parts2LNo license0
ESP32SLAVE TEMP
zen451019
90 × 85 mm22 parts2LNo license1
ESP32Imu bn008
ArunCH404
56.6 × 56.4 mm7 parts2LNo license0
ESP32SLAVE PRESSURE
90 × 85 mm21 parts2LNo license1
ESP32SLAVE V-C INSOLATED
90 × 85 mm19 parts2LNo license1
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?
23,543 boards from 11,917 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.