Quote Originally Posted by Swankrg View Post
Where is the variable voltage portion, I must have missed it.
I never did end up doing that bit. For very low current levels, you can get away with just hooking up a potentiometer, but if you want to do it properly, I would suggest something along the lines of the below link. Just beef up the mosfet to the needed level, and put the load hookups where he has the motor.

http://pcbheaven.com/circuitpages/PW...r_using_a_555/