Quote Originally Posted by runrite View Post
I have done just that on the input I have
100k to ground permanently on GP0
the switch is wired in this order +5V 10K switch then GP0
still no luck
Not sure if it's 10k or 100k. 100k would be too high.
But, either way ...

Turn off the Pull-up's, by commenting the WPU statement.
It's not letting the voltage go far enough towards Vss.
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