int ledPin = 13; // choose the pin for the LED
int inputPin = 7; // choose the input pin (for PIR sensor)
// we start, assuming no motion detected

int pirState = LOW; // variable for reading the pin status
int val = 0;

void setup() {
  // declare LED as output
  pinMode(ledPin, OUTPUT);

  // declare sensor as input
  pinMode(inputPin, INPUT);

  // start the serial communication at 9600 bits per second
  Serial.begin(9600);

}

void loop() {
  // read Input from the sensor

  
  val = digitalRead(inputPin);
  
  // if the sensor is HIGH, >> motion is detected
  if (val == HIGH) {
    // turn on the LED
    digitalWrite(ledPin, HIGH);
    Serial.println("LED Turned on");

    // check if the state has changed from LOW to HIGH
    if (pirState == LOW) {
      // print a message to the serial monitor
      Serial.println("Motion detected!");
    }
    
    // set the state to HIGH, so we only print the message once
    // Use Truth Tables if u wanna explain it more smoothly
    pirState = HIGH;
    Serial.println("Recorded the current State of PIR Sensor");
  } else {
    // if the sensor is LOW, meaning no motion is detected
    digitalWrite(ledPin, LOW);
    Serial.println("No Motion Detected");
    // set the state to LOW
    pirState = LOW;
  }
}