This project turns the Arduino into an OBD2 on-board diagnostic tester. So, the Arduino can read OBD2 vehicle data and it can ...

An Arduino project to display useful information like turbo boost pressure, current gear, performance tune status, etc.

It show me these responses. How can it get speed , rpm values ? And why should i need to unplug obd2 connector to make connection ...

If ever you wanted to jump the Arduino bandwagon, here’s a great opportunity to do so. The Arduino™ programming environment ...