Hello all, I am using a stepper motor with following specifications : Steper motor with 2mm pulley attached to shaft compatible with GT2 timming belt Step Angle : 1.8° Degree Configuration: 4 wire Unipolar stepper motor Holding Torque: 2.1 Kgcm at 1A per winding Phase current : 1A Resistance/phase: 2.9 ohm Rated Voltage : 3.3V Inductance/Phase : 4.7 mH Length : 44mm Shaft Length : 15 mm Whileby jasani_karan - Stepper Motors, Servo Motors, DC Motors