Stepper motors are increasingly taking its position in the world of the electronics. Here in this project, we will Rotate the Stepper Motor using Potentiometer and Arduinolike if you turn the potentiometer clockwise then stepper will rotate clockwise and if you turn potentiometer anticlockwise then it will rotate anticlockwise.
Okay, so unlike a normal DC motor this one has five wires of all fancy colors coming out of it and why is it so? To understand this we should first know how a stepper works and what its specialty Arduino stepper motor potentiometer code dating. First of all steppers motors do not rotatethey step and so they also known as step motors. Meaning, they will move only one step at a time. These motors have a sequence of coils present in them and these coils have to be energized in a particular fashion to make the motor rotate.
When each coil is being energized the motor takes a step and a sequence of energization will make the motor take continuous steps, thus making it to rotate. Let us take a look at the coils present inside the motor to know exactly know from where these wires come from.
As you can see the motor has Unipolar 5-lead coil arrangement. There are four coils which have to be energized in a particular sequence. We use a microcontroller like Arduino energize these coils in a particular sequence and make the motor perform the required number of steps.
So now, why is this motor called the BYJ48? There is no technical reason for this motor for being named so; maybe we should dive much deeper into it. Let us look at some of the important technical data obtained from the datasheet of this motor in the picture below. That is a head full of information, but we need to look at few important ones to know what type of stepper we are using so that we can program it efficiently. First we know that it is a 5V Stepper motor since we energize the Red wire with 5V.
Then, we also know that it is a four phase stepper motor since it had four coils in it. Now, the gear ratio is given to be 1: This means the shaft that you see outside will make one complete rotation only if the motor inside rotates for 64 times. This is because of the gears that are connected between the motor and output shaft, these gears help in increasing the torque. Another important data to notice is the Stride Angle: This means that the motor when operates in 8-step sequence will move 5.
It is important to know how to calculate the steps per Revolution for your stepper motor because only then you can program it effectively. In Arduino we will be operating the motor in 4-step sequence so the stride angle will be Most stepper motors will operate only with the help of a driver module.
So we will use an external module like ULN module as stepper motor driver. There are a many types of driver module and the rating of one will change based on the type of motor used. "Arduino stepper motor potentiometer code dating" energise the four coils of the stepper motor we are using the digital pins 8,9,10 and The driver module is powered by the 5V pin of the Arduino Board.
A potentiometer is connected to A0 based in whose values we will rotate the Stepper motor. Arduino stepper motor potentiometer code dating, power the driver with External Power supply when you are connecting some load to the steppe motor. Also remember to connect the Ground of the Arduino with the ground of the Driver module.
Before we start programming with our Arduino, let us understand what should actually happen inside the program. As said earlier we will be using 4-step sequence method so we will have four steps to perform for making one complete rotation. The Driver Arduino stepper motor potentiometer code dating will have four LED using which we can check which coil is being energised at any given time. In this tutorial we are going to program the Arduino in such a way that we can turn the potentiometer connected to pin A0 and control the direction of the Stepper motor.
The complete program can be found at the end of the tutorial few important lines are explained below. The number of steps per revolution for our stepper motor was calculated to be 32; hence we enter that as shown in the line below. Next you have to create instances in which we specify the pins to which we have connected the Stepper motor. The pins number are disordered as 8,10,9,11 on purpose. You have to follow the same pattern even if you change the pins to which your motor is connected.
Since we are using the Arduino stepper library, we can set the speed of the motor using the below line. The speed can range between 0 to for BYJ48 stepper motors. In our program we will read the value of the Analog pin A0 and compare it with previous value Pval. If it has increased we move 5 steps in clockwise and if it is decreased then we move 5 steps in anti-clockwise.
Now, upload the below program in Arduino UNO and open the serial monitor. As discussed earlier you have to rotate the potentiometer to control the rotation of the Stepper motor. Rotating it in clockwise will turn the stepper motor in clockwise direction and vice versa.
Hope you understood the project and enjoyed building it. The complete working of the project is shown in the video below. If you have any doubts post them on the comment section below or on our forums.
Quote and Order boards in minutes on https: Hi, I'm new to programming.
Wonder if there's a way of rotating the stepper motor at a sharp 90 degrees when the potentiometer is turned.
And the motor would return to its initial position when the potentiometer is turned off. I would greatly appreciate your help, thanks in advance! Let us take a look at this BYJ48 Stepper motor. Calculating the Steps per Revolution for Stepper Motor: Why so we need Driver modules for Stepper motors?