>via a single I/O pin.  What is a cheap way to do a little conditioning on
>those sawtooth waves.  I am going to be implementing 1200 baud UART in

Use a PIC with built-in comparator, or use the ST input pins.  If you're
looking at the raw data, you need an amplifier of some sort.

Have you thought to connect the diode across the inputs of an op amp, with
a large resistor for feedback to the neg side?

Andy

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Andy Kunz               Life is what we do to prepare for Eternity
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