MP3Car.com - View Single Post - Mercedes CANBUS comms -hack/log?

mgazza · 11-29-2007, 05:04 AM

i am also very interested, iv been snooping about on CANBUS. i wrote and built a I2C->LPT adaptor for my old car for the HU. but my new car has CANBUS HU and Auido controls. im looking into doing much of the same thing write software and make abit of hardware for raw interface with the bus. but i lac information on the physical design of the bus. as i understand it so far its two wires with a 120ohm resisters terminating them. using pnp and npn transistors to post states on the can hi- can lo. i belive there are also chips out there too that could save some work.

11-29-2007, 05:04 AM	#6
mgazza Newbie Join Date: Oct 2007 Posts: 12	i am also very interested, iv been snooping about on CANBUS. i wrote and built a I2C->LPT adaptor for my old car for the HU. but my new car has CANBUS HU and Auido controls. im looking into doing much of the same thing write software and make abit of hardware for raw interface with the bus. but i lac information on the physical design of the bus. as i understand it so far its two wires with a 120ohm resisters terminating them. using pnp and npn transistors to post states on the can hi- can lo. i belive there are also chips out there too that could save some work.