#include  <Wire.h>
#include  <LiquidCrystal_I2C.h>
#include  <RTClib.h>
LiquidCrystal_I2C lcd(0x27,16,2);
RTC_DS1307 rtc;

int buzzer = 6;
int relay = 5;
int sensorPin = A1;
int sensorValue = 0;

char nama2hari[7][12] = {" Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"};

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode (sensorPin, INPUT);
  pinMode (buzzer, OUTPUT);
  pinMode (relay, OUTPUT);
  if (! rtc.begin())
  {
    lcd.print("RTC tidak tersedia");
    while(1);
  }
  if (! rtc.isrunning())
  {
    lcd.print("RTC tidak berfungsi");
  }
rtc.adjust(DateTime(F(__DATE__),F(__TIME__)));
}

void loop (){

  DateTime now = rtc.now();
  lcd.setCursor(0, 0);
  lcd.print(nama2hari[now.dayOfTheWeek()]);
  lcd.print(" ");
  lcd.print(now.day());
  lcd.print(" /");
  lcd.print(now.month());
  lcd.print(" /");
  lcd.print(now.year());
  lcd.print("   ");

  lcd.setCursor(0, 1);
  lcd.print(now.hour());
  lcd.print(" : ");
  lcd.print(now.minute());
  lcd.print(" : ");
  lcd.print(now.second());
  lcd.print(" ");

  if(now.minute()==44)
  {
    digitalWrite(relay, LOW);
    lcd.setCursor(13,1);
    lcd.print("ON");
  }else{
    digitalWrite(relay, HIGH);
    lcd.setCursor(13,1);
    lcd.print("OFF");
  }
    sensorValue = analogRead(sensorPin);
      if(sensorValue <100)
      {
        tone (buzzer, 300, 250);
        delay(500);
        tone (buzzer, 160, 250);
        delay(500);

      }else{
        noTone(buzzer);
      }
}