This is a good solution, except in this particular case there are two obstacles: 1. Liability - the more I attach to the car (especially critical communication busses) the more risk I take and testing I have to do. 2. While diagnostics and engine data over OBDII (VPW, CAN, etc) are fairly well defined, other messages (door open, etc) are vehicle/supplier/manufacturer specific and may not even make it to the OBDII connector. Would be nice to have the extra data, though (MPG, etc) -Adam On 6/3/08, Hazelwood Lyle wrote: > I have only been lightly reading this thread, please excuse me if I'm repeating a previous idea. > Don't most cars use CAN bus? > Could you connect in read only mode and monitor events? > It may not be "universal", but when it works, you'd get a great deal of data from all over the car. > > I am sure there are others here with more info on this than I have. > It it feasible? > > Lyle > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- EARTH DAY 2008 Tuesday April 22 Save Money * Save Oil * Save Lives * Save the Planet http://www.driveslowly.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist