a 10k resistor is never going to smoke at 12V.
- my thoughts exactly and yet it did on a 12v supply.
(but note that this resistor will pull up to 12V when the transistor is off, cannot be controlled from 5V circuit).
I failed to consider this... I wanted to make an H-bridge out of a couple of extra parts I had so i could control the direction of my DC motor. Looks like it is more trouble to make than it is worth just to buy one.