/*
 * Created by ArduinoGetStarted.com
 *
 * This example code is in the public domain
 *
 * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-infrared-obstacle-avoidance-sensor
 */

// Arduino's pin connected to OUT pin of IR obstacle avoidance sensor
const int SENSOR_PIN = 10;

void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  // initialize the Arduino's pin as aninput
  pinMode(SENSOR_PIN, INPUT);
}

void loop() {
  // read the state of the the input pin:
  int state = digitalRead(SENSOR_PIN);

  if (state == LOW)
    Serial.println("The obstacle is present");
  else
    Serial.println("The obstacle is NOT present");

  delay(100);
}