im using a basic stamp 2 microcontroller on a board of education rev C to run a simple car that's supposed to go a certain distance and stop. its a competition, and it only allows me to use 4.8VDC max. however, the board of education that i have indicates that it wants 6-9VDC. i thought it would be ok and tried anyway using 4 AA batteries to power it (and the servos), but i notice the servos move differently each time i put in the same command so that my car veers left and right instead of going straight (not the same deviation each time either, and its definitely not human error). pretty much, i thought the low voltage may be the problem, so i was wondering how i could solve it. any help would be greatly appreciated. thanks!