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

int jam, menit, detik;
char temp[33];

void setup() {
  lcd.backlight(); lcd.init();
  lcd.setCursor(0,0); lcd.print(" Semarang ");
  if(rtc.begin()){
      lcd.setCursor(0,1); lcd.print(" RTC berhasil ");
  } else {
      lcd.setCursor(0,1); lcd.print(" RTC gagal ");
  }
}

void loop() {
  DateTime now = rtc.now();
  jam = now.hour();
  menit = now.minute();
  detik = now.second();
  sprintf(temp, "JAM %02d:%02d:%02d WIB", jam, menit, detik);
  lcd.setCursor(0,1); lcd.print(temp);
}