i have an unknown voltage that will vary from about 0 volts up to about 30, and i need to determine what that voltage
is via a 16F877 pin.

i know that i could just do a simple voltage divider, put that on a A/D pin and figure it up.

what i'd like to do is find a way to get it without drawing current all the time.

i'm wondering if there's not somethign i could do with a known RC circuit and the PiCBasic POT or RCTIME commands to
determine what that voltage is .. with this setup i wouldn't be drawing current except when i execute one of those
commands.

i'll only need to check this voltage every 30 seconds or so.



thanks for any ideas you may have !



david dunn

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