#define PIR 10   // PIR sensor pin
#define LED 4    // LED pin

void setup()
{
  pinMode(PIR, INPUT);     // PIR sensor as input
  pinMode(LED, OUTPUT);    // LED as output
  Serial.begin(9600);      // Start Serial Monitor
}

void loop()
{
  int motion = 0;   // Variable to store PIR state

  // Read PIR sensor (HIGH = motion, LOW = no motion)
  motion = digitalRead(PIR);

  if (motion == HIGH)   // Motion detected
  {
    digitalWrite(LED, HIGH);   // Turn ON LED
    Serial.println(motion);
    Serial.println("Motion Detected");
  }
  else
  {
    digitalWrite(LED, LOW);    // Turn OFF LED
    Serial.println(motion);
    Serial.println("Motion Not Detected");
  }

  delay(1000);   // Small delay
}