Freematics Forum

I just purchased OBD2 Adaptor Model A. I use my 2006 Lexus to do the test. I changed the code a lit bit. Turn on the PIN 13 if obd.init is passed. At least I know the odb initialization works. When I connect to TX/RX, I do see pin 13 turn on. However when I change it to A4(SDA) and A5(SCL) on UNO. I...