#include <Wire.h>
#include "RTClib.h"
#include <LiquidCrystal.h>

LiquidCrystal lcd (7,6,5,4,3,2);
RTC_DS3231 rtc;
char namaHari[7][12] = {"Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"};

void setup() {
  // put your setup code here, to run once:
pinMode(8, OUTPUT);
lcd.begin(20,4);
rtc.begin();
if (rtc.lostPower())
rtc.adjust (DateTime(F(__DATE__), F(__TIME__)));
lcd.setCursor(0,0);
lcd.print(" JAM DIGITAL ");
delay(1000);
lcd.setCursor(0,1);
lcd.print(" LAB LISTRIK ");
delay(1000);
lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
DateTime now = rtc.now();
lcd.setCursor(2,0);
lcd.print(namaHari[now.dayOfTheWeek()]);
lcd.print(",");
printAngka(now.day());
lcd.print("-");
printAngka(now.month());
lcd.print("-");
printAngka(now.year());
lcd.setCursor(5,1);
printAngka(now.hour());
lcd.print(":");
printAngka(now.minute());
lcd.print(":");
printAngka(now.second()); tone(10,1000,50);
lcd.setCursor(2,3);
lcd.print("SMKN 2 SURAKARTA ");
delay(5000);
}
void printAngka(int digits){
  if(digits <10){
    lcd.print('0');
    lcd.print(digits);
  }
  else lcd.print(digits);
}