//int LEDpin = 13;
int obstaclePin = 10;
int hasObstacle = LOW; // LOW MEANS NO OBSTACLE
void setup() {
pinMode(obstaclePin, INPUT);
Serial.begin(9600);
}
void loop() {
  hasObstacle = digitalRead(obstaclePin);
  if (hasObstacle == HIGH) 
  {
    Serial.println("Stop something is ahead!!");
  }
  else if (hasObstacle == LOW)
  {
    Serial.println("Path is clear");
    //digitalWrite(LEDpin, LOW);
  }
  delay(200);
}