[eimix]

Originally Posted by Bix

Has anyone had a look at the vishay SI9241? http://www.datasheetcatalog.org/data...shay/70013.pdf

Would this chip be compatible with this project, or perhaps some slight mod to get it working?

I read few thread in various forums about IC for ISO 9141
and it looks possible to use other ICs:

Different ISO Serial Chips - MyRollingRoad & South West Mitsubishi EVO Forums
and home build one:
prj.perquin.com

For SI9241 CS pin control I can make some changes to OBDuino and output HIGH on one pin if transmitting (initialization or sending pid request) and LOW if receiving (always if not transmitting). Or oposit if needed.

As i see there is few pins unused left

But testing in real and troubleshooting would be your job.