#include <NewPing.h> 

//Ultrasonic sensor pins 
#define ECHO_PIN 5 //Output 
#define TRIGGER_PIN 6 //Input 

NewPing ultSonic(TRIGGER_PIN, ECHO_PIN); 

void setup() 
{ 
  Serial.begin(9600); //Set data rates in bit per second (bps) 
} 


void loop() 
{ 
  long int distance = ultSonic.ping_cm(); //get sensor output in cm 
  Serial.println(distance); // Print result 
  delay(200); //delay 200ms 
}