const int pirPin = 2;  
const int ledPin = 13; 
int motionState = LOW; 

void setup() {
  pinMode(pirPin, INPUT);     
  pinMode(ledPin, OUTPUT);    
  Serial.begin(9600);         
}

void loop() {
  motionState = digitalRead(pirPin);

  if (motionState == HIGH) {         
    digitalWrite(ledPin, HIGH);      
    Serial.println("Motion detected!"); 
    delay(2000);                    
  } else {
    digitalWrite(ledPin, LOW);       
    Serial.println("No motion detected."); 
  }
}