Autohacking

Some resources so far

• http://www.geekmyride.org/wiki/index.php/Main_Page

• 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.

Typically, one finds that the manufacturers use the following standards though most manufactures have adopted ISO15765 CAN for 2006 and newer vehicles:

• J1850-PWM (mainly Ford)
• J1850-VPW (Chrysler, GM, Saturn)
• ISO9141/ISO14230 (Acura, Chrysler, Honda, Subaru, Suzuki, Toyota, Volkswagen)
• ISO15765 (most newer vehicles)

Open Source Implementations

• Vehicle Telemetry Platform from the Practical Arduino book is a derivative of the OBDuino32K using the Arduino Mega
• http://code.google.com/p/opengauge/ looks like a great open source resource
• OBDuinoMega
• OBDuino32K
• MPGuino Miles Per Gallon monitor using the Arduino

Commercial Implementations

These links are basically for commercial versions of the obdII interface. Almost all of them give you a connector with free software that can read the basic trouble codes. Some give you the manufacturer specific "extended" or "enhanced" support codes that allow a person to troubleshoot even more components.

• AutoEnginuity.com

Hardware