I don't know much about electronics. But I am trying to figure out a simple hack for the Gemmy head that they were doing the midi hack on. What I have so done so far is cut everything out of the head. I wired the jaw motor through a 10k audio taper potentiometer ran the led eyes straight to the power supply. Which is a 6.5 walwart. I run the walwart through my lightning box. The jaw and eyes are working perfect! but the motor that moves the eyes back and fourth doesn't do right. I have it separate and have hooked it up all kinds of ways. If I hook it up straight it moves a 1/3 to 1/2 of turn. Then it will not move any more. It doesn't work through the potentiometer either. Trying to do something you know nothing about is a great challenge. I can tell you that! But I think I am as far as I can go. If this is the best I can do with it it will be Ok. But would like to have the eyes moving. So any ideas would be great!