the motor fundamentals did help me...but it was my mistake that i forgot to mention i will not be using a potentiometer, instead atmega8 will do the controlling after programming. would you know if some one has done this?
here's the parts list, that i have...
TEAC 4Z28, P.No. 14769070-30, made in china, 12V stepper motor
L12 Arduino Board with ATMEL 0850G ATmega8 16 pu IC