Motor Speed Control Using Arduino

Arduino can generate pwm on its analog output pin and when it is applied to dc motor its speed varies.
Motor speed control using arduino. This will control the speed of the motor. The motorcontrol sketch to gain control of the speed of your motor whenever you need it you need to add a potentiometer to your circuit. In the below code we have initialized the variable c1 and c2 and assigned analog pin a0 for the potentiometer output and 12 th pin for pwm. It uses arduino uno board to generate pwm and measure calculate above 3 parameters.
A pwm dc motor controller technology is used to control the speed. The en a pin of ic is connected to the pwm pin 2 of arduino. A dc motor can t be connected to a microcontroller as the output current of the microcontroller is very small and it cannot drive the motor. It is very easy to vary speed of dc motor using arduino.
I have also performed the dc motor direction control in matlab by sending different commands through serial port from matlab and labview to the arduino and then controlled the direction of. The complete arduino code for controlling dc motor speed using potentiometer is given at the end. These two digital pins of arduino control the direction of the motor. These parameters are displayed on 16x4 lcd.
In my previous tutorial dc motor direction control using arduino i have just controlled the dc motor in both directions at constant speed using arduino. 2 applied voltage to motor. 3 motor speed in rpm. To set the values of arduino pins 8 and 9 we will use the digitalwrite function and to set the value of pin 2 we will use the using analogwrite function.
In this project an arduino based speed and direction control of dc motor without using motor driver ic is designed. To set the values of arduino pins 8 and 9 we have used the digitalwrite function and to set the value of pin 2 we have to use the analogwrite function. The en a pin of ic is connected to the pwm pin 2 of arduino. These two digital pins of arduino control the direction of the motor.
When the speed is varied from 1 to 9 the speed increases with the value 9 set as the maximum speed of the motor. This will control the speed of the motor.