Arduino Stepper Motor Driver Code

Free patterns graphic design. Stepper Motor Control using Arduino is a simple project where a Bipolar Stepper Motor is controlled using Arduino UNO. Stepper Motor is a type of brushless DC Motor that converts electrical pulses into distinct mechanical movements i.e. the shaft of a stepper motor rotates in discrete steps. When a computer controls these steps, we can get precise position and speed control.

Arduino Stepper Motor Controller Code
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Because of this discrete nature of step – wise rotation of a stepper motor, they are often employed in industrial automation, CNC systems, etc. where precision motion is required.

Here, we look at the 28BYJ-48 stepper motor with the ULN2003 driver. We get familiar with the specifications and the wire connections for driving the stepper motor from an Arduino microcontroller. Also, I include Arduino code to drive the 28BYJ-48 stepper motor without installing any.
As you might expect, there is an Arduino library to support stepper motors. This makes the process of using a motor very easy. After including the 'Stepper' library, the four control pins 'in1' to 'in4' are defined. To tell the Arduino Stepper library which pins are connected to the motor controller, the following command is used.
Wiring NEMA 17 Stepper Motor with L298N & Arduino Arduino Code – Controlling NEMA 17 Stepper Motor. The following sketch will give you complete understanding on how to control a bipolar stepper motor like NEMA 17 with L298N motor driver and can serve.

In this project, we designed a simple system to control a stepper motor using Arduino. We have used Arduino UNO as the main controlling part of the project to control the steps of the stepper motor.

Select the Next Set of Arduino Projects You Want to Learn in Electronicshub: Arduino Projects»

Information about the 28BYJ-48 stepper motor and ULN2003 driver board. The 28BYJ-48 is one of the cheapest stepper motors you can find.Although it is not super accurate or powerful, it is a great motor to use for smaller projects or if you just want to learn about stepper motors. Aug 29, 2017 I really need help. I'm trying to learn how to control a 200 step, 1.8 degree stepper motor with an A4988 Stepper Motor driver and arduino. I'm having trouble finding example codes that work at all, or when they do work and something happens, I have no idea if the motor. This article includes everything you need to know about controlling a stepper motor with the DRV8825 stepper motor driver and Arduino. I have included a wiring diagram, a tutorial on how to set the current limit and many example codes.

In the following sections, a brief introduction to stepper motors, circuit of the project and also the working of the project is explained.

Circuit Diagram of Stepper Motor Control using ArduinoComponents Required

Arduino UNO [Buy Here]
L293D Motor Driver IC [Buy Here]
Bipolar Stepper Motor [Buy Here]
Power Supply (suitable for your stepper motor) [Buy Here]
Breadboard (Prototyping Board) [Buy Here]
Connecting Wires [Buy Here]

A brief introduction to Stepper Motor

As mentioned earlier, a Stepper Motor is a type of DC Motor that rotates in discrete steps. Due to their unique design, stepper motors can be controlled for precise positioning without any feedback.

A typical stepper motor has multiple coils that are divided into phases. When each phase is energised in sequence, the rotor of the stepper motor rotates in steps.

Basically, there are three types of stepper motors: Variable Reluctance (VR) Stepper Motors, Permanent Magnet (PM) Stepper Motors and Hybrid Stepper Motors. Based on the winding of the stator, stepper motors can also be classified as Bipolar Stepper Motors and Unipolar Stepper Motors.

We will not go into the details of the types of stepper motors but it is important to identify whether your stepper motor is a bipolar or unipolar one. This is because, the driving method for each of these stepper motors is different from the other.

For instance, the driver circuit of a unipolar stepper motor can be implemented with simple transistor based circuit or a Darlington Transistor IC like ULN2003A. But in case of a bipolar stepper motor, we need to implement an H – bridge type driver like L293D Motor Driver IC.

The following image shows a bipolar stepper motor, a 6 – wire unipolar stepper motor and a 5 – wire unipolar stepper motor.

The most common step angle or step count for stepper motors is 1.8⁰ or 200 steps (both of them are same as 1.8⁰ x 200 = 360⁰).

How to Design Stepper Motor Control Circuit?

In this project, we have used a bipolar stepper motor. Hence, we used the Motor Driver IC L293D, which is an H – bridge type driver. Since it is a bipolar stepper motor, there are only 4 wires we need to connect.

So, connect the two wires from one coil to outputs 1 and 2 of L293D and the other two wires from second coil to outputs 3 and 4.

The 4 inputs of the L293D Motor Diver IC are given from Arduino UNO. So connect them to any of the 4 digital I/O pins (here, we connected them to pins 2, 3, 4 and 5 of Arduino UNO).

Understand the power requirements of your stepper motor and provide necessary power supply. Wrong power supply would permanently damage the motor.

The control of steps is done with the help of computer using serial monitor. So, make sure that the RX and TX pins of the Arduino are not used as digital I/O. Alternatively, we can control the steps or rotation of the motor with the help of analog input via a potentiometer.

Working of the Project

Arduino Stepper Motor Controller Code

A simple Stepper Motor Control using Arduino UNO and L293D Motor Driver IC is designed in this project. The working of the project is explained here.

The stepper motor used in this project is a Bipolar PMH (Permanent Magnet Hybrid) type Stepper Motor. Since it is a bipolar motor, there are only 4 wires corresponding to the end terminals of two coils. These 4 wires are connected to the output pins of the L293D Motor Driver IC.Convert 1080p to 4k software.

In order to drive the stepper motor, we will be using a technique called “Half Stepping”. The motor used in this project has 200 step count. With one phase stepper excitation i.e. energising only one phase at a time, we can achieve the normal 200 step rotation with least power consumption.

Two phase stepper excitation is another technique where two phases are energised at a time. With this technique, the step count doesn’t vary from the one phase excitation but the torque and speed is significantly increased.

But the disadvantage is it requires twice the power. The following image shows a 4 step based operation of one phase and two phase excitation methods.

There is another technique called Half Stepping. This is a combination of one phase and two phase excitation. The step count is doubled i.e. half the step angle can be achieved.

So, with half stepping, we can get double the resolution with along with smoother operation. The image below demonstrates an 8 step “Half Stepping” excitation method.

As mentioned earlier, the step angle of the motor used in this project is 1.80 i.e. 200 steps for full step excitation. In order to increase the resolution (double the resolution), we will use half step excitation and achieve 400 step count.