#define PIR_PIN D2
#define LED_PIN D6
#define BUZZER_PIN D7

unsigned long motionStart = 0;
const unsigned long motionDuration = 3000;
bool motionOn = false;

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

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

  if (motion == HIGH && !motionOn) {
    motionOn = true;
    motionStart = millis();
    digitalWrite(LED_PIN, HIGH);
    digitalWrite(BUZZER_PIN, HIGH); // active buzzer ON
  }

  if (motionOn && millis() - motionStart >= motionDuration) {
    motionOn = false;
    digitalWrite(LED_PIN, LOW);
    digitalWrite(BUZZER_PIN, LOW); // active buzzer OFF
  }
}