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The A4988 Nema 17 stepper driver is a microstepping driver module that is used to control bipolar stepper motors.
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Stepper drivers send the current to stepper motor through various phases. Steps per Revolution = 360/ step angle 360/1.8 = 200 Steps Per RevolutionĪlso check various stepper motor related projects here, which not only incudes basic interfacing with various microcontrollers but also have robotics projects which involves stepper motor.Ī stepper driver module controls the working of a stepper motor. So in the case, NEMA 17 step angle is 1.8 deg. Steps Per Revolution for a particular stepper motor is calculated using the step angle of that stepper motor. Normally center tap wires left disconnected. Black, Yellow, Green wires are part of first winding where Black is center tap, and Yellow and Green are coil end while Red, White, and Blue is part of a second winding, in which White is center tap and Red and Blue are coil end wires.
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These wire are connected in two split windings. Wiring diagram for NEMA17 is given below.Īs you can see that this motor has a Unipolar six-wire arrangement. means it covers 1.8 degrees in every step. Stepper motors do not rotate they step, and NEMA17 motor has a step angle of 1.8 deg. It can be operated at a lower voltage, but torque will drop. This motor has six lead wires, and the rated voltage is 12 volt. NEMA 17 stepper motor has a 1.7 x 1.7-inch faceplate, and it usually has more torque than the smaller variants, such as NEMA 14. Operation of Nema17 is similar to normal Stepper Motors.