Hardware prerequisites: Raspberry Pi, Carberry module(http://carberry.it/), OBD2 connector. Scheme for OBD2 pinout can be found here: http://opengarages.org/handbook ...

send it to the device). Device will automatically handle your command as OBD2 response (41) for RPM (0C) with value 0x12 0x34 and it will display it on the led strip. Device can read data from OBD2 ...