#include <Wire.h>
#include "RTClib.h"
#include <LiquidCrystal.h>
LiquidCrystal lcd (12,11,5,4,3,2);
RTC_DS3231 rtc;
char namaHari [7][12]={"Ahad","Senin","Selasa","Rabu","Kamis","Jumat","SABTU"};
void setup(){
  // put your setup code here, to run once:
pinMode (7,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 A");
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(7,1000,50);
lcd.setCursor(2,3);
lcd.print("SMKN 2 SURAKARTA ");
delay(1000);
}
void printAngka(int digits){
if(digits < 10){
lcd.print("0");
lcd.print(digits);
  }
   else lcd.print (digits);
   }