#define PIR_PIN 13        // PIR sensor OUT
#define MOTION_LED 12     // Red LED
#define POWER_LED 14      // Green LED
#define BUZZER_PIN 27     // Buzzer

void setup() {
  pinMode(PIR_PIN, INPUT);
    pinMode(MOTION_LED, OUTPUT);
      pinMode(POWER_LED, OUTPUT);
        pinMode(BUZZER_PIN, OUTPUT);

          digitalWrite(POWER_LED, HIGH);  // Keep system LED ON
            Serial.begin(115200);
              Serial.println("🔒 System Initialized. Monitoring for motion...");
              }

              void loop() {
                int motion = digitalRead(PIR_PIN);

                  if (motion == HIGH) {
                      digitalWrite(MOTION_LED, HIGH);
                          digitalWrite(BUZZER_PIN, HIGH);
                              Serial.println("🚨 Motion Detected! Sending alert to cloud (simulated)...");

                                  delay(3000);  // Alert duration

                                      digitalWrite(MOTION_LED, LOW);
                                          digitalWrite(BUZZER_PIN, LOW);
                                              Serial.println("✅ Alert done. System monitoring...");
                                                }

                                                  delay(500);  // Sensor polling interval
                                                  }