Motor Speed Controller Arduino

Arduino pin 3 is used to turn the transistor on and off and is given the name motorpin in the sketch.

Motor speed controller arduino.

A pwm dc motor controller technology is used to control the speed. Speed control of any motor is always done y pulse width modulation abbreviated as pwm. The motor driver is connected to two pwm digital pins pins 10 and 11 on the arduino uno. When the program starts it prompts you to give the values to control the speed of the motor.

The frequency of pwm signal remains same. The transistor acts like a switch controlling the power of the motor. Speed control of dc motor using arduino with the help of pwm. The computer should have hmi made by visual studio to communicate with arduino.

In pwm the arduino sends a pulsating wave that is similar to astable mode of 555 timer ic. You need to enter a value between 0 and 255 in the serial monitor. Pwm speed control pulse width modulation microcontroller and arduino are digital devices. It s an arduino controlled motor speed regulator which uses phase cut dimming method and pid algorithm.

Before going into the further details i would like to tell you about the concept of pwm for controlling dc motor. The arduino pro mini is used to store motor controls pid algorithms and to communicate with the pc through com port. Pwm pulse can be generated using arduino and l298 enable pin is used to get that pwm pulse and then it controls the motor speed accordingly. The stepper is controlled by with digital pins 8 9 10 and 11 for either unipolar or bipolar motors.

By setting one of these pins low and the other high see line 18 and 19 in code below we can extend the actuator at maximum speed. 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. In short the duty cycle changes. Hmi will show motor speed graphs and change motor speed settings.

Pwm stands for pulse width modulation where we can change pulse width of the signal.