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Controller Area Network (CAN) is a serial communication protocol that lets microcontrollers and devices talk to each other without a central host computer. Developed by Bosch in the 1980s, it is now the standard in automotive and heavy vehicle electronics. Why...

Compatible boards Any Arduino with SPI support works. The CS pin and SPI pins vary by board: Board SCK MOSI MISO CS (recommended) Notes Arduino Mega 2560 52 51 50 53 Hardware SPI, most headroom Arduino Uno 13 11 12 10 5V, limited RAM Arduino Nano 1...

This implementation sends 6 messages every 20 ms (50 Hz cycle). All use 29-bit extended IDs and 8 data bytes, conforming to SAE J1939. Message table ID (hex) Name PGN Variable Active bytes 0x0CF00400 EEC1 — Engine RPM 61444 rpm 3–4 0x0CFE6CEE TCO1 — ...