Re:Unofficial documentation of the Tesla Model S REST API
by mlnowak on Thursday February 14, 2013 @03:27PM
(#5221945)
Wow,the price is really steep, but I also could not find info on the hardware they use to interface with OBDII for Dashcommand. I think there is most likely additional cost for a wifi enable d device that plugs in to OBDII and forwards this data to the mobile app.
Another nerdier but cheaper route is to use Arduino with ELM interpreter: http://www.cs.purdue.edu/homes/millerrv/Ryan_Miller/Projects...
https://play.google.com/store/apps/details?id=org.prowl.torq...
https://itunes.apple.com/ie/app/dashcommand-obd-ii-gauge-das...
http://www.devtoaster.com/products/rev/
Some of these are massively overpriced, but they are useful looking.
If I had a bit of cash I'd consider putting a 7" Android tablet into the dash (you'd need a double DIN slot) and install the torque app, with a custom moulded surround to make it look stock. Live engine data to satisfy your inner nerd!