DVDdoug:
I'm not sure I understand... You write a high to pin 12 with nothing connected and it works - you get 3V.Then, you connect the 1K resistor and the transistor and pin 12 drops to zero?
In that case, your 1K resistor is shorted (or it's way lower than 1K).
You understand well. My pin 12 is well configured as output. In a multimeter à check the 1k resistor.
My resistor should ne upper ?