In this article, we are publishing a project which explains different aspects of interfacing a Stepper Motor with Arduino. Stepper motor is a specially designed DC motor which comes with advantages of both a servo motor and a normal dc motor. Compared to a normal Dc motor, the maximum rpm a stepper motor can produce is very low. But they have the advantage that they can be positioned accurately. Unlike servo motor, stepper motor can also be rotated continuously. On the basis of the winding arrangement inside, the stepper motor can be categorized into unipolar and bipolar. The stepper motor we are using here is a unipolar stepper motor named 28BYJ-48. After going through the project you can run or turn the motor to desired direction.
Let’s begin our tutorial and learn how to interface a stepper motor to Arduino.
Objectives of the Project
- Understanding the basic working of stepper motor.
- Interfacing of stepper motor with Arduino.
- Generating code for turning motor to a desired direction.
- Using a simple Arduino library for stepper motor interfacing.
Let’s begin to build our project!
Components Used
| Component | Specification | Quantity |
|---|---|---|
| Arduino | Uno | 1 |
| Stepper Motor | 28BYJ-48 | 1 |
| Darlington Pair Transistor | ULN2003A | 1 |
| Resistors | 470 Ohms | 4 |
| LED | 4 |
Arduino Stepper Motor Interfacing – Circuit Diagram
Assemble the circuit as shown in the diagram. Components required and connections are explained below
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