Hack an ELM327 Cable to Make an Arduino OBD2 Scanner. By mviljoen2 in Technology Arduino. Published Oct. 10, 2014 Stats Download Favorite. Introduction: Hack an ELM327 Cable to Make an Arduino OBD2 Scanner. By mviljoen2 Follow More by the author: In my previous instructable i created an OBD2 Simulator so that i didn't have to test my Arduino OBD2 Reader in the car the whole. Arduino + CAN-BUS shield to monitor fuel consumption and other vehicle parameters. I first wrote this to get a fuel economy meter on my RX-8, and later worked to reverse engineer the messages streaming across the CAN-BUS to see what sensor data is available on the car. Features: Live streaming of CAN-BUS content over serial link to connected PC (with logging and viewing.