I have an Arduino Pro (OK it is an OSEPP, but they appear to be the same) but I can't get read any switch inputs on pin 13 to the serial console.
I'm not sure if this is the right forum or not, but I figured I would start here and then move to another place if needed.
Everything I've read implies that you need a 10K resistor wired to ground on a switch in pin 13 and then it should work OK, but I can't seem to get any digital read output at all on the serial console.
Any advice you can provide here would be greatly appreciated. This is the second board I've tested on and they both do the same thing. It works perfectly on my Uno, so I'm wondering if there is something different on the Pro causing the problem.
Sounds like a problem with the board you're using. I'd guess an actual Arduino Pro would work, but your derivative Arduino has a bug.