Hi I am doing a university project and need some help. I want to read a car's speed using OBD-II connector. I need some help on how to interface the OBD-II connector with arduino mega and the relative code to read the speed of vehicle from that. Regards

OBD-II Speedometer

oldvetteguy May 2, 2018, 4:03pm 2

Read this:

Then do an internet search for: ELM327