retrolefty:
You might just have a bad analog pin. Note that the signal has a pull-up resistor to 3.3vdc at the mosfet, so the signal line will be a high is the pin is open circuit internally in the chip. Have you tried your 3 second test sketch on some of the other analog pins?
The pin seems to be working fine on a different sketch that I wrote. My problem seems to be something else now. The video above explains the problem that I am happening. Any insight that you can offer would be great!