MSgpio.com read only forums (Jan.15,2018)

I've found that the VSS on my Audi is actually a reed switch and not a VR sensor.

I've already built my board for a VR input, what changes should I make to the circuit to use the reed switch? (it appears to be 12v from the factory, but I assume it will work with a 5v feed)

Is it going to be as simple as connecting the processor port to the sensor (via a 380ohm resistor) with a 5v pullup (1K?)?

More info if needed:

http://forums.quattroworld.com/s4s6/msgs/168463.phtml

Addicted.

You dont need to do anything, the VR circuit will work on a DC square wave signal as well 5 or 12volt.

BR//Tobmag

Great news, that was the final piece in the jigsaw puzzle..






Now all I have to do is put it all together...

lucky you!!

should remove most if not all vss issues most seem to have..square wave in!!