const int pirPin = 2;       // PIR sensor output pin
const int ledPin = 13;      // LED pin

int motionCount = 0;
unsigned long firstMotionTime = 0;

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

void loop() {
  int motionDetected = digitalRead(pirPin);

  if (motionDetected == HIGH) {
    Serial.println("Motion Detected!");

    // First detection time tracking
    if (motionCount == 0) {
      firstMotionTime = millis();
    }

    motionCount++;

    if (motionCount > 3 && (millis() - firstMotionTime) <= 60000) {
      // High alert: blink LED continuously
      for (int i = 0; i < 30; i++) {
        digitalWrite(ledPin, HIGH);
        delay(250);
        digitalWrite(ledPin, LOW);
        delay(250);
      }
      motionCount = 0; // Reset count after alert
    } else {
      // Normal alert: LED on for 5 seconds
      digitalWrite(ledPin, HIGH);
      delay(5000);
      digitalWrite(ledPin, LOW);
    }
  }

  
  if ((millis() - firstMotionTime) > 60000) {
    motionCount = 0;
  }
}