How to physically connect Arduino to ELM327 and extract messages from OBD2 - Device Hacking - Arduino Forum

Hi there, I'm quite new to hardware hacking and am trying to connect my Arduino Uno R3 to my car's OBD port. I am told the best way to do this is using an ELM327 chip to do the decoding and tap into it. I have bought a bbfly OBD adapter (importantly I have chosen a non Bluetooth adapter as I want to minimise lag/latency getting data from the car) and gotten it to show live data from my car using ForScan on my laptop. Now that I have checked everything "outside the hood" is working I want to

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How to physically connect Arduino to ELM327 and extract messages from OBD2 - Device Hacking - Arduino Forum