okay...i got it..:-)
thanks anyway...maybe i need ur help with my programming later...hope u can help me...hehe..

actually my project is to lock and unlock the door using gsm. so the stepper motor is rotate 90 degree right? i think it easy for me to control the degree of motor rotation..what do u say?

hi, i want to use gsm to move stepper motor by using arduino as interface. which mean i send sms to gsm module -> gsm module give instruction to arduino to rotate stepper motor 90 degree -> motor rotate 90 degree. is it possible and how to do with the coding?

sorry i'm very new to this...:-(