#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#include "RTClib.h"
RTC_DS1307 rtc;
int jam,menit,detik,hari,tanggal,bulan,tahun;
char temp [33];
char nama_hari[7][7] = {"Mingg","Senin","Sel","Rabu","Kamis","Jumat","Sabtu"};

void setup() {
  Serial.begin(9600);

lcd.backlight();
lcd.init();
lcd.setCursor(4,0);
lcd.print("MIJUN");
lcd.setCursor(2,1);
lcd.print("ELEKTRONIKA");  delay(2000); lcd.clear(); 
rtc.begin();
Serial.println("program siap");
}

void loop(){
  DateTime now = rtc.now();
  jam = now.hour();
  menit = now.minute();
  detik = now.second();
  hari = now.dayOfTheWeek();
  tanggal = now.day();
  bulan = now.month();
  tahun = now.year();
  sprintf (temp, "jam %02d:%02d:%02d WIB", jam, menit, detik);
  lcd.setCursor(0,0);lcd.print(temp);
  Serial.println(temp);
  sprintf (temp, "%s,%02d-%02d-%d", nama_hari[hari],tanggal,bulan,tahun);
  lcd.setCursor(0,1);lcd.print(temp);
  Serial.println(temp);
}