We have used the 28BYJ-48 Stepper motor and the ULN2003 Driver module. The circuit Diagram for the arduino stepper motor control project is shown above. ![]() The primary principle for all driver modules will be to source/sink enough current for the motor to operate.Īrduino Stepper Motor Control Circuit Diagram and Explanation There are a many types of driver module and the rating of one will change based on the type of motor used. So we will use an external module like ULN2003 module as stepper motor driver. This is because the controller module (In our case Arduino) will not be able to provide enough current from its I/O pins for the motor to operate. Most stepper motors will operate only with the help of a driver module. Why so we need Driver modules for Stepper motors? In Arduino we will be operating the stepping motor in 4-step sequence so the stride angle will be 11.25° since it is 5.625°(given in datasheet) for 8 step sequence it will be 11.25° (5.625*2=11.25). The motor will take one revolution in one direction, then one revolution in the other direction.It is important to know how to calculate the steps per Revolution for your stepper motor because only then you can program it effectively. ![]() The motor is attached to digital pins 8 - 11 of Arduino. This program drives a unipolar or bipolar stepper motor. step one revolution in the other direction: Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11) initialize the stepper library on pins 8 through 11: change this to fit the number of steps per revolution Coding in the Arduino language will control your circuit. Open the Arduino IDE software on your computer.
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