Autohacking
Some resources so far
http://code.google.com/p/opengauge/ looks like a great open source resource
- mc33290 is an ISO K Line Serial Link Interface, I think has to do with serial interfacing odbii
- ELM seems to make some of the (only?) odb interface chips. They appear to have a software stack they burn onto microchip microcontrollers
- http://www.scantool.net/parts/ has some promising software, and seems to sell ELM products and a breakout board.