int IR = D1;
void setup() {
 pinMode(IR,OUTPUT);      // IR SENSOR AS INPUT DEVICE 
 Serial.begin(9600);
}

void loop() {
  if(digitalRead(IR) == LOW){
     Serial.println("Object Detected");
    }
    else{
       Serial.println("Object Not Detected");
       delay(250);       // Delay to Avoid the fast print 
      }
}