i have 2 advanced motion pwm motor drives, 1 is #b15a8d, the other #b12a6d. i just got them to learn on & play with. i have never messed with servos before. i have done some info searching, i have found nothing. any info anyone has i would appreciate, mostly at this point i need to know what kind of motor or motors too buy that these will run & what the input is for them? if anyone can help, thanks in advaance. greg