Project V - 22. DC Motor Speed Control using Potensio Meter (Arduino Based)

DC Motor Speed Control using Potensio Meter

Arduino UNO is used to control the speed of a DC motor using a potentiometer. The potentiometer is connected to pin A0 as the analog data input and the readout is used as the PWM output control on pin 9. The PWM value is also on the LCD.

Hardware Requirement

• Potentiometer 50 K
• 16 x 2 LCD Module
• Motor DC
• Driver Motor DC (L298)
• Power supply +5 Volt
• Jumper

                                  Motor DC | Source                       Potensiometer | Source

Block Diagram

Schematic

Arduino - LCD Wiring

Arduino - Potentiometer Wiring

Arduino - Driver Motor Wiring

Source Code/Sketch

#include <LiquidCrystal.h>
LiquidCrystal lcd(2, 3, 4, 5, 6, 7);
void setup(){
pinMode(9,OUTPUT);
lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print("Kontrol Motor DC");
lcd.setCursor(0,1);
lcd.print("dg Potensio (A0)");
delay(3000);
lcd.clear();
}
void loop(){
int val = analogRead(A0);
byte pwm = map(val, 0, 1023, 0, 255);
analogWrite(9,pwm);
lcd.setCursor(0,0);
lcd.print("PWM:");
lcd.print(pwm);
lcd.print(" ");
delay(100);
}

How it Works

1. Connect the Arduino with Peripherals needed
2. Plug in the Power Source on the device
3. Compile and upload the script program above to your arduino
4. First initial LCD display 

5. Normal view on the LCD, display the value of PWM

6. Just go ahead and rotate your potento meter. Then the smaller the PWM then the DC motor 
    rotation faster, and vice versa when the PWM value is greater then the rotation of DC motor is 
    getting slowed down.


Video for Project V - 22. DC Motor Speed Control using Potensio Meter (Arduino Based)

Required File