Sample sketch for using ultrasonic sensors with Arduino

sonar.ino

//This sketch demonstrates how to interface with ultrasonic sensors using the Arduino and NewPing library

#include <NewPing.h>

int TRIGGER = 12;
int ECHO = 11;

//Declare a sonar object specifying the trigger and echo pins
NewPing sonar(TRIGGER, ECHO);

void setup(){
  //Start serial at 115200 baud rate
  Serial.begin(115200);  
}

void loop(){
  //get current measurement from sensor in centimeters
  int distance = sonar.ping_cm();
  //print it to the serial monitor
  Serial.print(distance);
  Serial.println("cm");
  //pause slightly before rereading the sensor again, don't make this value less than 30
  delay(100);
}