[Jay Torborg]

Campy - very helpful reply. Thanks. I just bought an oscilloscope off ebay (pretty good deals available, btw), but I won't be able to check out the actual signals on my car until after we're committed to the throttle control electronics. However, I can pretty easily change resistor values in the input buffers to deal with different voltage ranges, and the programming of the microcontroller for counting pulses. It would be nice to have a feel for the voltage range from the hall effect sensor, but I think this is enough info to get the circuit designed. Thanks very much.

- Jay