#define PIR_PIN A0
#define LED_PIN A1

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(115200);
  Serial.println("System Ready");  // Confirm serial working
}

void loop() {
  int pirStatus = digitalRead(PIR_PIN);
  
  if (pirStatus == HIGH) {
    digitalWrite(LED_PIN, HIGH);
    Serial.println("Motion Detected!");
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  delay(200);
}