So, almost forgot I had this thread. New job and a move set me back some, but progress has been made!
I gave my dad the Pi 2 and got a Pi 3.
Use the aux input on the Raxiom and got the proper RCA cable for the Pi. Still working on the program to use the Bluetooth obd2 info for a live display.
Next challenge is power; you can't just cut power to the Pi because you can potentially corrupt the memory card (the OS runs off the card). There are a few different options I'm looking at that will run the shutdown sequence when power to the USB port is lost and maintain power long enough with a small capacitor.
Finally I need to adjust the display some; I thought I had figured out that the display on the Raxiom was 800x480 but it is either off a bit or I need to adjust my overscan settings on the Pi.
More to come!
Sorry for the dusty display...
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