Debraj has been developing a project to read the OBD information through CAN bus. His design is based on the dsPIC33FJ128MC802 (3.3V) and MCP2551. He is using a factory stock OBD cable and feeding the data into a jack on the project board. The data is displayed on a 16×4 LCD and includes engine RPM, throttle, vehicle speed, etc.
The description, hardware schematic, software description, code can be found at hobbydebraj website.
Via the contact form.
I wrote an article on automotive CAN and OBD-II for those interested in automotive electronics: http://evenchick.com/?p=112. I’m also working on a CAN development board based on the new PIC18F26K80.
Hi at all, intresting Project!