// Task 2: IR Sensor Obstacle Detection

int irSensor = 3;   // IR sensor digital output connected to pin 3
int sensorValue = 0;

void setup() {
  pinMode(irSensor, INPUT);      // set pin as input
  Serial.begin(9600);            // start Serial Monitor
}

void loop() {
  sensorValue = digitalRead(irSensor);  // read IR sensor value
  
  if (sensorValue == LOW) {   // LOW means obstacle present (depends on module)
    Serial.println("Obstacle Detected");
  } else {
    Serial.println("Clear");
  }

  delay(500); // small delay for readability
}