Alrighty so I has a Pioneer AVH P4300DVD that will be going in in a few days. It has a set of RCAs for A/V in. What I want to do is this: somehow display stuff like boost, A/F ratio, etc. on the screen through the A/V in using the car's OBD. I have a Droid, and have the app Torque, which uses a bluetooth OBD-II dongle and displays realtime information to the phone. I'm wondering if any of you guys have ever done something like this on a non-carputer.
My first thought was to build a little Android-running box and run Torque from that, then display that on the HU through the A/V ins. The problem with this is I'm not sure how I would control it- no idea how I'd make the touchscreen interface with the box. I used to be an IT tech and I've built lots of PCs before, but never done anything with Android. I know you can run Android from a PC, but that seems like overcomplicating things.
A geeky friend of mine suggested that I use an Android phone and remove the cellular radio, effectively giving me an extremely small Android-running computer. I suppose this could work... but it seems like there could be a better way.
The easy way out would be to just output video from my phone, but that's... meh.
What are your guys' thoughts on this? Ideas, input, advice?
Thanks a lot.