// Define pin numbers
const int potPin = A0;    // Potentiometer connected to analog pin A0
const int irPin = 2;      // IR sensor connected to digital pin 2
const int ledPin = 9;     // LED connected to PWM pin 9 (optional)

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(9600);

  // Set IR sensor pin as input
  pinMode(irPin, INPUT);

  // Set LED pin as output
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // Read the potentiometer value (0 to 1023)
  int potValue = analogRead(potPin);

  // Map potentiometer value to LED brightness (0 to 255)
  int brightness = map(potValue, 0, 1023, 0, 255);

  // Set the LED brightness (optional)
  analogWrite(ledPin, brightness);

  // Read IR sensor state (HIGH when object detected, LOW when not)
  int irState = digitalRead(irPin);

  // Print values for debugging
  Serial.print("Potentiometer Value: ");
  Serial.print(potValue);
  Serial.print(" | LED Brightness: ");
  Serial.print(brightness);
  Serial.print(" | IR Sensor State: ");
  Serial.println(irState);

  // Add a delay for better readability
  delay(200);
}