#include <Servo.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

Servo servo1;

int trig = 12;           
int echo = 13;           
long durasi, jarak;    

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  servo1.attach (3);
  servo1.write(0);
  pinMode(trig, OUTPUT);   
  pinMode(echo, INPUT);     
  //Serial.begin(9600);      
  lcd.init();   
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trig, LOW);
  delayMicroseconds(8);
  digitalWrite(trig, HIGH);
  delayMicroseconds(8);
  digitalWrite(trig, LOW);
  delayMicroseconds(8);
  durasi = pulseIn(echo, HIGH); 
  jarak = (durasi / 2) / 29.1;  
  //Serial.print("Jarak = ");
  //Serial.print(jarak);        
  //Serial.print(" cm  ");
  
  if(jarak >= 0 & jarak <=100) {
  servo1.write(0);
  lcd.setCursor(5,0);
  lcd.print("Kosong");
  delay(200);
  }
  else if (jarak >= 100 & jarak <=200) {
  servo1.write(60);
  lcd.setCursor(5,0);
  lcd.print("Terisi");
  delay(200);
  }
  else {
  servo1.write(90);
  lcd.setCursor(5,0);
  lcd.print("Penuh");
  delay(100);
  lcd.clear();
  }
  
}