const int pirPin = 14;    // PIR sensor output pin (digital)
const int ledPin = 19;   // LED pin (built-in LED on most Arduino boards)
const int buzzer = 18; 

void setup() {
  pinMode(pirPin, INPUT);   // Set PIR pin as input
  pinMode(ledPin, OUTPUT);  // Set LED pin as output
  pinMode(buzzer, OUTPUT);
  digitalWrite(ledPin, LOW); // Ensure LED is off initially
  Serial.begin(9600);       // Start serial communication for debugging
  Serial.println("Hello, ESP32!");
}

void loop() {
  int pirState = digitalRead(pirPin); // Read PIR sensor state

  if (pirState == HIGH) {  // Motion detected
    digitalWrite(ledPin, HIGH); // Turn on LED
     digitalWrite(buzzer, HIGH);
    Serial.println("Motion detected!");
    delay(2000); // Keep LED on for 2 seconds (adjust as needed)
  } else {
    digitalWrite(ledPin, LOW);  // Turn off LED
     digitalWrite(buzzer, LOW);
    Serial.println("No motion.");
  }
  
  delay(1000); // Small delay to avoid flooding the Serial Monitor
}