Open source PCB designs you can simulate
7,464 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.
Microchip SAMTiny4FSK
New-England-Weather-Balloon-Society
35.1 × 76.3 mm80 parts4LCERN-OHL-W-2.095- schematic only · 69 parts
Cohdl
conol-ai
69 partsMIT16 
ESP32Nomad
0Zane
65 × 120 mm69 parts2LMIT15
ESP32MoleNet V7.1
ComNets-Bremen
106 × 66.8 mm70 parts4LGPL-3.013
BME280-Breakout
Destination-SPACE
12.7 × 12.7 mm10 parts2LCERN-OHL-P-2.03
Hw udsp card
crsknr
60 × 30 mm211 parts6LGPL-3.02
ESP32Esp32s3-plant monitor
MuffinByteLabs
62.5 × 44.5 mm51 parts4LCERN-OHL-P-2.02
Pmod bme280
fm4dd
41 × 20.3 mm12 parts2LCERN-OHL-1.22
Sensor
Maniek19-ENG
21 × 16 mm8 parts2LMIT1- schematic only · 23 parts
SmartGarden
Silverlode76
23 partsMIT1 
ESP32ESP32-S3-4Layer-CoreBoard
gorkemguven
102.9 × 43.7 mm101 parts4LGPL-3.00
ESP32Nft hydroponic controller
hasan-abuzaid
135 × 101.3 mm97 parts4LCERN-OHL-S-2.00- schematic only · 6 partsSTM32
Helix grounding
CARC-Program
6 partsMIT0 
AVR/ArduinoRain Gauge v0.6.2
ARTS-Laboratory
36.1 × 54.3 mm11 parts2LCC-BY-SA-4.00
RP2040/RP2350Eae125ce91d5220efa92105e51b069a0e56b70021c6ffda8759e7e6ba92ac7f0
autonomous-ai
95.3 × 68 mm52 parts2LMIT5
Browse boards by part
AMS1117-3.3 345USBLC6-2SC6 296RP2040 224W25Q128JVS 135TL072 118CH340C 116AP2112K-3.3 103ESP32-S3-WROOM-1 97TL074 94AP2112K-3.3TRG1 82SRV05-4 73W25Q128JVSIQ 73USBLC6-2P6 70Pico 52L7805 50XC6206P332MR 50MCP73831T-2ACI/OT 49SN65HVD230 49AMS1117-5.0 48ESP32-S3-WROOM-1-N16R8 48LM393 44BME280 43DW01A 43LAN8710A-EZC(QFN32) 43