/* this code will help to print the distance from the data to serial monitor, readings will be taken by ultrasonic sensor*/


  #include <Ultrasonic.h>
  // ULTRASONIC LIBRARY

  #include <SoftwareSerial.h>
  // include SOFTWERE SERIAL library above, with software serial any two I/O pins can be run as Rx, Tx

  SoftwareSerial Serial(0, 1); // RX, TX // to send and receive the data to serial port(Monitor)
  Ultrasonic ultrasonic(7, 8); // ultrasonic pins defined ( triger(5) and echo(4)), echo pin will send sound waves and triger will receive sound signals

  int distance; // defining variable

  void setup()
  {
   pinMode(2,OUTPUT);
    Serial.begin(115200);
  }

  void loop() {
    // Pass INC as a parameter to get the distance in inches
    distance = ultrasonic.read(); // reading values

    Serial.print("Distance in CM: ");
    Serial.println(distance); // printing distance on serial
    delay(1000);

    // if else condition, if condition is fulfilled then, led will High, if no it will be low.
    if(distance <= 50)
    {
      digitalWrite(2,HIGH);
    }
    else
    {
      digitalWrite(2,LOW);
    }
  }