Motor Speed Control Using Arduino

This will control the speed of the motor.
Motor speed control using arduino. In this project an arduino based speed and direction control of dc motor without using motor driver ic is designed. The en a pin of ic is connected to the pwm pin 2 of arduino. These parameters are displayed on 16x4 lcd. A pwm dc motor controller technology is used to control the speed.
When the speed is varied from 1 to 9 the speed increases with the value 9 set as the maximum speed of the motor. Arduino can generate pwm on its analog output pin and when it is applied to dc motor its speed varies. These two digital pins of arduino control the direction of the motor. 2 applied voltage to motor.
You can use the motorcontrol sketch for the arduino to put some input into a dc motor to give you full control of the motor on the fly. 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. It uses arduino uno board to generate pwm and measure calculate above 3 parameters. It is very easy to vary speed of dc motor using 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. These two digital pins of arduino control the direction of the motor. Hence we use transistors to form an h bridge to drive the motor. 3 motor speed in rpm.
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. This will control the speed of the motor. The en a pin of ic is connected to the pwm pin 2 of arduino. 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 pwm the arduino sends a pulsating wave that is similar to astable mode of 555 timer ic. 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.