diy mpg gauge

[skewbe]

Yah, the laptop->obd route is a well traveled path. Problem is obdii is a hodgepodge of protocols, and laptops aren't exactly cheap.

Also, I'm not ready to sort out PICs and deal with programmer compatabilities,specs,etc.


However, there may still be a dirt cheap option for iso, an old blackberry 957 perhaps (or mebbe a serial based palm) and something to convert 5v<->12v. In that way it is relatively easy to program/reprogram and comes with a display,input system, and a serial port based on the windows iso stuff:
http://www.andywhittaker.com/ECU/OBD...9/Default.aspx
BUT, it ony works with iso vehicles.



Here is another laptop idea, tap into the vss and injector pulses via the line-in right and left channels on the sound card and sort it out from there. They are basicaly A/D converters.