#include <NewPing.h>
#define TRIGGER_PIN A0
#define ECHO_PIN A1 
#define MAX_DISTANCE  200
NewPing sonar (TRIGGER_PIN,ECHO_PIN,MAX_DISTANCE);

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
delay(1000);
Serial.print("jarak=");
Serial.print(sonar.ping_cm());
Serial.println("cm");
}