[dustn]

Well here is what i have been planning on using... since my electronic skills are on a somewhat basic level (two electronics classes a couple years ago in high school), i decided to use an already built circuit. Allelectronics.com has some pwm motor controllers for $4. They look to be small and it could be used as a means of pulsing the control buttons (taking out the microswitches and connect to the spot on the motor control board where it would open and close the circuit. I'd have to order and look at the thing to tell what exactly to do with it, but thats my basic idea.

on the same site, there are some "basic stamp" boards that can do all sorts of stuff, including pwm. I have a few from a robotics lab i did in highschool, but forgot a lot about how to use them. they retail for a tall $60