// Define pins for IR sensor and LED
const int irSensorPin = 2; // Connect IR sensor output pin to digital pin 2
const int ledPin = 13;     // Built-in LED pin on Arduino board

void setup() {
  pinMode(irSensorPin, INPUT); // Set IR sensor pin as input
  pinMode(ledPin, OUTPUT);     // Set LED pin as output
  Serial.begin(9600);          // Initialize serial communication for debugging
}

void loop() {
  // Read the state of IR sensor
  int irState = digitalRead(irSensorPin);
  
  if (irState == HIGH) {
    // If IR sensor detects something (object), turn on LED
    digitalWrite(ledPin, HIGH);
    Serial.println("Object detected!"); // Print message for debugging
  } else {
    // If no object is detected, turn off LED
    digitalWrite(ledPin, LOW);
  }
  
  delay(100); // Small delay for stability
}