#include <Servo.h>

Servo kran;
#define pinTrig 3
#define pinEcho 2

float distance;
long durasi;
float tinggiJus;

void setup() {
  kran.attach(11);
  kran.write(0);
  pinMode(pinTrig, OUTPUT);
  pinMode(pinEcho, INPUT);
  digitalWrite(pinTrig, LOW);
}

void loop() {

  digitalWrite(pinTrig, LOW);
  delayMicroseconds(2);
  digitalWrite(pinTrig, HIGH);
  delayMicroseconds(10);
  digitalWrite(pinTrig, LOW);

  durasi= pulseIn(pinEcho, HIGH);
  distance= 0.0001*((float)durasi*340)/2; 
  tinggiJus = 30- distance;

  if (tinggiJus > 22) {
    kran.write(0);
    delay(1000);
  } else {
    kran.write(90); 
  }

  delay(500); 
}