2 layers130 × 115 mm

Obd2-simulator
FilipRaic/obd2-simulator
Open-source OBD-II simulator board: emulates a vehicle ECU per SAE J1979 and ISO 15031-5 over CAN. ESP32-S3 + MCP2515, 21 simulated parameters, DTC bank with MIL.
107 partsMIT
KiCad boards from 1 GitHub repository tagged “sae-j1979”, the most starred first; open any of them in PCBKit.

FilipRaic/obd2-simulator
Open-source OBD-II simulator board: emulates a vehicle ECU per SAE J1979 and ISO 15031-5 over CAN. ESP32-S3 + MCP2515, 21 simulated parameters, DTC bank with MIL.