On Mon, 6 Nov 1995, Errington A wrote:

> I used a piezo tranducer between PA0 and GND on a PIC84 with no apparent
> ill-effects.  I don't think you should have any problems with the transducer
> between two pins.
>
> Andy

I'm working on a small project that uses the PIC as an ultrasonic
distance detector.  Instead of using a separate chip, I generated the
40kHz directly from the chip to the transducer (I also tried one with
a transistor amplifier).  The receiving end (using a 567 tone decoder) did
not seem to work very well. Has anyone attempted similar projects?
I need some hints on getting the receiver to work better.

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 Rolan Yang            http://hertz.njit.edu/~rxy5310   Electrical Engineer
 rxy5310@hertz.njit.edu                             kyurius@tsb.weschke.com
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