#include <Wire.h> 

#include "RTClib.h"
RTC_DS1307 rtc;
#include <LiquidCrystal_I2C.h>

char namaHari[7][12] = {"Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"};

#define trigger 9

#define echo 8

#define relay 12

int buzzer = 7;

LiquidCrystal_I2C lcd(0x27, 16, 2);


 

float time=0,distance=0;

 

void setup () {
  Serial.begin(9600);
  lcd.begin(16, 2);

  if (!rtc.begin()) {
    lcd.println("RTC tidak terhubung, Cek kembali wiring!");
    while (1);
  }

  if (! rtc.isrunning()) {
    lcd.println("RTC tidak bekerja, Setel ulang waktu!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

lcd.init();
  lcd.backlight();

 pinMode(trigger,OUTPUT);

 pinMode(echo,INPUT);

 pinMode(relay,OUTPUT);

 pinMode(buzzer,OUTPUT);


 delay(2000);

}

void loop()

{

 measure_distance();
{
  
  lcd.setCursor(0,0);

    DateTime now = rtc.now();
    lcd.print(namaHari[now.dayOfTheWeek()]);  
    lcd.print(',');    
    lcd.print(now.hour(), DEC);
    lcd.print(':');
    lcd.print(now.minute(), DEC);
    lcd.print(':');
    lcd.print(now.second(), DEC);
    lcd.println();
 
  delay(100);}


 if (distance<80)

 {

   digitalWrite(relay,HIGH);
   digitalWrite(buzzer,HIGH);
  
  lcd.setCursor(0,1);
  lcd.print("FILLING...");
 }

 else

 {

   digitalWrite(relay,LOW);
   digitalWrite(buzzer,LOW);
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("EMPTY!");
 }



 delay(500);

}


void measure_distance()

{

 digitalWrite(trigger,LOW);

 delayMicroseconds(2);

 digitalWrite(trigger,HIGH);

 delayMicroseconds(10);

 digitalWrite(trigger,LOW);

 delayMicroseconds(2);

 time=pulseIn(echo,HIGH);

 

 distance=time*340/20000;

}