int LDR_PIN = 34;
int buzzer = 25;
int led = 26;

int threshold = 700;

void setup() {
  Serial.begin(115200);

  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  int lightValue = analogRead(LDR_PIN);

  Serial.print("Light Value: ");
  Serial.println(lightValue);

  // Dark condition
  if(lightValue < 200) {
    digitalWrite(led, HIGH);
    Serial.println("Status: DARK → LED ON");
  } else {
    digitalWrite(led, LOW);
    Serial.println("Status: BRIGHT → LED OFF");
  }

  // Intrusion detection
  if(lightValue > threshold) {
    digitalWrite(buzzer, HIGH);
    Serial.println("🚨 INTRUSION DETECTED!");
  } else {
    digitalWrite(buzzer, LOW);
  }

  Serial.println("------------------------");
  delay(1000);
}