I want to use an Arduino to capture and display data from the class 2 GM data stream that uses the J1850 PWM standard. I do not want to use an adapter that plugs into the OBD2 port, I want to T into the single data wire.
- These engines are not used in their original vehicle, complete custom install
- OBD2 port is installed but it needs to be free for diagnostics.
- I can deal with a small single chip solution and that would be preferred.
- a nano or mega will probably be used as it will control other functions as well.