Open source PCB designs you can simulate
18,949 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.
AVR/ArduinoISACard
profdc9
189.7 × 95.9 mm99 parts2LCC-BY-SA-4.046- schematic only · 15 partsAVR/Arduino
Kicad firmware generation
DLR-RY
15 partsMIT26 
AVR/ArduinoIR remote controlled amplifier main board
ak1211
159 × 100 mm123 parts2LMIT1
AVR/ArduinoBoard
160 × 100 mm118 parts2LMIT1
AVR/ArduinoAtmega BM83 RevB
Antonio-Balestrino
114.3 × 88.9 mm29 parts2LApache-2.01
AVR/ArduinoKamaji classic v1
iley
100 × 100 mm27 parts2LMIT4