Unless I'm missing something about what you're trying to do, I really don't
see the point of using the microcontroller as a repeater. It will introduce
lots of error which will mask the effects you are trying to measure. Just
stick with a simple digital or analog buffer. I suppose you could use a
microcontroller to generate the initial signal but that is still overkill.

Henry


"forTe" wrote in message
oups.com...
So that I make sure, I should use PWM for this task correct?