int IRSensor=9;
int LED=13;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Serial working");
  pinMode(IRSensor,INPUT);
  pinMode(LED,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int sensorstatus=digitalRead(IRSensor);
  if(sensorstatus==1){
    digitalWrite(LED,LOW);
    Serial.println("Motion ended!");
  }
  digitalWrite(LED, HIGH);
  Serial.println("Motion detected");
  delay(2000);
}