const int irsensor=A0;
const int led1=6;
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  pinMode(irsensor, INPUT);
    pinMode(led1, OUTPUT);
      pinMode(5,OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue = analogRead(irsensor);
  if(sensorValue<=500){
  // print out the value you read:
  Serial.print("object detected!");
  digitalWrite(led1, HIGH);
  }
  else{
    Serial.print("no object detected!");
     digitalWrite(led1, LOW);
  }
   Serial.println(sensorValue);
  delay(100);  // delay in between reads for stability
}