For the discussion of Arduino related topics.
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I have a 2003 VW. I think I have determined that the protocol is ISO9141-2. The example code included with the library, both the Can demo and ecu demo, do not work. I am also using the sparkfun obd2 cable. Is the cable using the wrong pins for my vehicle, or is there somewhere in the code that I need to change? Any help is appreciated, I was so excited to get this, but I cannot get it to work.