A4988 driver module provides five different step resolutions: full-step, haft-step, quarter-step, eight-step, and sixteenth-step. The truth table for these pins is given below: MS1 You can select the different step resolutions using the resolution selector pins ((MS1, MS2, and MS3). Microstep resolution: Full step, ½ step, ¼ step, 1/8 and 1/16 stepĬircuit diagram to control Nema 17 stepper motor with Arduino is given in the above image. As A4988 module has a built-in translator that means we only need to connect the Step and Direction pins to Arduino. Step pin is used for controlling the steps while the direction pin is used to control the direction. Stepper motor is powered using a 12V power source, and the A4988 module is powered via Arduino. Potentiometer is used to control the direction of the motor.

If you turn the potentiometer clockwise, then stepper will rotate clockwise, and if you turn potentiometer anticlockwise, then it will rotate anticlockwise. A 47 µf capacitor is used to protect the board from voltage spikes. MS1, MS2, and MS3 pins left disconnected, that means the driver will operate in full-step mode.Ĭomplete connections for Arduino Nema 17 A4988 given in below table.Ĭomplete code with working video control Nema 17 with Arduino is given at the end of this tutorial, here we are explaining the complete program to understand the working of the project.įirst of all, add the stepper motor library to your Arduino IDE. You can download the stepper motor library from here.Īfter that define the no of steps for the NEMA 17. of steps per revolution for NEMA 17 is 200.

#include Īfter that, specify the pins to which driver module is connected and define the motor interface type as Type1 because the motor is connected through the driver module.

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