This Arduino library is developed for the Arduino OBD-II UART adapter (http://arduinodev.com/hardware/obd-kit/) and works with all Arduino varients. Several sample sketches are provided for demonstrating the usage of the library.
The aim is to provide Arduino vehicle connectivity via the OBD-II port with easy-to-use Arduino library so Arduino lovers can start play Arduino on their cars easily.
Source code repository: https://github.com/stanleyhuangyc/ArduinoOBD
Works and fast.