>Your idea just needs one R from battery + to the pin,
>with the cap to gnd. Then pull the pin low and count for
>it to get high again. With a 560k resistor and the pin
>held high by software, your circuit would use much less
>power too. Good way to measure a battery voltage with
>just a digital pin (not ADC). Pretty cool!
>-Roman

You would probably need a small R from cap to the pin to limit the current
discharge when the I/O pin is pulled low. Nice idea.

James

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