The Nema17 motor has 6 lead wires and rated voltage is 12V. It can be operated at lower voltage but torque will drop. These motors have a step angle of 1.8 deg., this means that it has 200 steps per revolution for every step it will cover a 1.8° hence the level of control is also high.
ULN2003 IC is one of the most commonly used Motor driver IC. This IC comes in handy when we need to drive high current loads using digital logic
ULN2003 Stepper Motor Driver Module
Industrial Grade Nema17 4.4kg-cm 0.9 Degree 2 Phase Hybrid Stepper
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NEMA17 Stepper Motor 4.4kg-cm 1.2A at Rs 500/piece