#include <NewPing.h>

#define TRIGGER_PIN 12

#define ECHO_PIN 11

#define MAX_DISTANCE 200

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);

void setup() {

Serial.begin(115200);

}

void loop() {

delay(50);

Serial.print("Ping: ");

Serial.print(sonar.ping_cm());

Serial.println("cm");

}