int led = 13;
int sensor = 2;
int sensorVal = 0;

void setup() {
  pinMode(led, OUTPUT);
  pinMode(sensor, INPUT);
  Serial.begin(9600);
}

void loop() {
  sensorVal = digitalRead(sensor);
  if (sensorVal == HIGH) {
    digitalWrite(led, HIGH); 
    Serial.println("Motion detected!");
    delay(100);
  } else {
    digitalWrite(led, LOW);
    Serial.println("Motion stopped!");
    delay(100);
  }
}