Arduino Stepper Motor Serial Control Of A Nec
In last project we have, where you can rotate the stepper motor by entering the rotation angle in Serial Monitor of Arduino. Here in this project, we will Rotate the Stepper Motor using Potentiometer and Arduino, like if you turn the potentiometer clockwise then stepper will rotate clockwise and if you turn potentiometer anticlockwise then it will rotate anticlockwise.Stepper Motors:Let us take a look at this 28-BYJ48 Stepper motor.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 is. First of all steppers motors do not rotate, they 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.
- Schematic diagram Arduino Sketch //YWROBOT //Compatible with the Arduino IDE 1.0 //Library version:1.1 #include #include.
- Unlike other motor types, the stepper motor is designed for use with more advanced electronics in order to take advantage of the fine motor control that it is capable of. For that reason, stepper motors require a driver circuit which connects it to a control system (such as an Arduino) capable of regulating power to the motor.
Arduino Stepper Motor Serial Control Of A Nec System
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.
Controlling Stepper Motors With Arduino
The Red wires will be supplied with +5V and the remaining four wires will be pulled to ground for triggering the respective coil. 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 28-BYJ48?
The example code will control both kinds of motors. See the unipolar and bipolar motor schematics for information on how to wire up your motor. In this example, a potentiometer (or other sensor) on analog input 0 is used to control the rotational speed of a stepper motor using the Arduino Stepper Library. The stepper is controlled by with.
I don’t know. 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 1:64. This means the shaft that you see outside will make one complete rotation only if the motor inside rotates for 64 times. Ghar aaja mahi by falak mp3 free download. 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: 5.625°/64. The Driver module will have four LED using which we can check which coil is being energised at any given time. The complete demonstration video can be found at the end of this tutorial.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#define STEPS 32Next you have to create instances in which we specify the pins to which we have connected the Stepper motor.Stepper stepper (STEPS, 8, 10, 9, 11);Note: 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 200 for 28-BYJ48 stepper motors.stepper.setSpeed(200);Now, to make the motor move one step clockwise we can use the following line.stepper.step(1);To make the motor move one step anti-clockwise we can use the following line.stepper.step(-1);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.potVal = map(analogRead(A0),0,1024,0,500);if (potValPval)stepper.step(5);if (potVal.