CAN Bus

http://www.obd-2.com/

See also tenrec not 8track, which has been gone for a decade.

2022-12-10 back looking at this, at least three hundred years have elapsed (Linux time) since I started this page.

CAN interfaces

Pi-CAN http://raspberrycan.blogspot.com/2012/08/controller-area-network-can-mcp2515-for.html

eDash

Circuit Cellar article: eDash Robin Brophy Sep 2011 issue 254

microOBD

Sparkfun UBM32 controller: USB 32-Bit Whacker - PIC32MX795 Development Board $40

320x240 LCD

Resources

Elm Electronics the folks who make the interface.

OBDtester and pyOBD

OBD Auto Doctor Free and paid versions, including Linux.

Wikipedia knowledge

OBDuino
OBD-II PIDs