Hello friends! I hope you all will be absolutely fine and having fun. Today, I will elaborate you that how can we make a simple algorithm for Stepper Motor Direction Control using Arduino. In my previous tutorials I made algorithm for,, DC Motor Speed Control using Arduino and DC Motor Speed Control using Matlab. Now, in this tutorial I will control a stepper motor using Arduino by entering the different commands through its serial port. Before going into the detail of this tutorial, you must know the basic difference between stepper and DC motors. DC motors have only two input terminal one is positive and the other one is negative.

You just have to provide the power supply and it will start rotating but this is not the case in stepper motor. The stepper motor which I will use in this tutorial, has six pins out of which four pins provide pulses or steps and the other two pins are power pins. So, in this tutorial I will control this six pins stepper motor using L298 motor controller and Arduino UNO board. Basically we can use stepper motor where precision is required. Stepper motor has wide range of applications e.g robotics, CNC machines, home automation etc.

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In simple word, we can say that stepper motor can be used where there is a need to move at particular angle. So, let’s get started with Stepper Motor Direction Control using Arduino: Stepper Motor Direction Control using Arduino In this tutorial we will learn how to make a program for Stepper Motor Direction Control using Arduinoby sending dfferent commands from the serial port. First of all, I am going share the list of components used for this mini project. • Arduino UNO • Stepper motor (6 wire) • L298 Motor Controller (H-Bridge) • Voltage Regulator (7805) • 1000uF • Jumper Wires • Solderig Iron • Soldering Wire I want to tell you a bit about the stepper motor because all the other components are discussed in detail in. Stepper Motor.

Basically, stepper motors are like the DC motors that rotate in discrete steps. They have multiple arranged coils and they are usually known as phases. Motor will rotate one step at a time if we energize each phase sequence. High levels of precision can be achieved by controlling the stepper motor with computer. Steppers motors are available in the market in many different sizes. The speed of the stepper motor is controlled by frequency of pulses generated.

They have wide range of applications like hard disk drives, robotics, telescope, antenna, toys etc. A six wire stepper motor is shown in the figure below. • I have designed and its screen shot is given in the figure below. • You can download complete source code for Stepper Motor Direction Control using Arduino by clicking the below button.

• I have used 6 wire stepper motor and each wire has its own function. • I have first divided these six wires into two pair. • Each pair is consisting of three wires out of which one wire is common and the other two generate pulses. • The two pair of three wires are shown in the figure below. • Then, I have chosen a common wire in each pair from which the resistance to the other two wires is common. • I have checked the resistance from the common wire to the both of the other wires of the same pair. • I found that the resistance from the common wire to both of the other wires is same.