Arduino Canbus Dashboard

Introduction

CAN standards

A controller area network bus (CAN bus) is a vehicle bus standard.

• Differential signaling
• CRC

ECU Electronic Control Unit

CAN 2.0 (classical CAN)

• eight bytes
• a typical baud rate of 500 kbit/s
• CAN2.0A, CAN2.0B,

CAN FD (releases 2012).

Some de facto standards for mechanical implementation: 9-pin D-sub type male connector

• pin 2: CAN-Low (CAN−)
• pin 3: GND (ground)
• pin 7: CAN-High (CAN+)
• pin 9: CAN V+ (power)

CAN C - Engine CAN (also known as chassis CAN): Fast communication speeds 125 kbps or 500 kbps

CAN B - Interior CAN (also known as body CAN): Communication speed 83 kbps

CAN and Arduino

Arduino shield

OBD2

On-Board Diagnostic protocols or the OBD2.

MB

https://www.benzworld.org/threads/the-230-can-bus-and-how-to-test.1988297/

• X connector

https://www.benzworld.org/threads/troubleshooting-the-can-bus.1989185/ W220 CAN B

• X30/6
• X30/5
• X30&4
• green and white cables; clip to open.