#include <NewPing.h>
#define TRIGGER_PIN  13 
#define ECHO_PIN     14  
#define MAX_DISTANCE 200
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); 
float tinggiMaksimal = 200.0;
float tinggiMukaAir = 0.0;
float jarak;
int iteration = 10;

void setup() {
  Serial.begin(115200); 
}

void loop() {
  delay(100); 
  jarak = (sonar.ping_median(iteration) / 2) * 0.0343;
  Serial.println(jarak);
  tinggiMukaAir = tinggiMaksimal - jarak;
  Serial.println(tinggiMukaAir);
  Serial.println();
}