/*
  Forum: https://forum.arduino.cc/t/application-of-timer-in-brushed-dc-motor-control-using-arduino/1233664/3
  Wokwi: https://wokwi.com/projects/391959385017752577

*/

#include <LiquidCrystal.h> // Include LCD library

// Define pins
const int motorPin = 9;
const int potentiometerPin = A0; // Assuming a potentiometer for speed control
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; // LCD pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int speed = 100; // Initial speed
unsigned long startTime = 0;
const int timerInterval = 1000; // milliseconds

void setup() {
  pinMode(motorPin, OUTPUT);
  lcd.begin(16, 2); // Initialize LCD
  Serial.begin(9600); // Optional for debugging
}

void loop() {
  // Read potentiometer value for speed control
  int potValue = analogRead(potentiometerPin);
  speed = map(potValue, 0, 1023, 0, 255); // Map potentiometer value to PWM range

  unsigned long currentTime = millis();
  if (currentTime - startTime >= timerInterval) {
    startTime = currentTime;
    // Update motor speed
    analogWrite(motorPin, speed);
    // Display motor speed on LCD
    lcd.clear();
    lcd.print("Motor Speed: ");
    lcd.print(speed);
  }
}