#include <Wire.h>
#include <RTClib.h>
RTC_DS1307 rtc;

void setup() {
 Serial.begin(115200);
 Wire.begin();
 if(!rtc.begin()) {
  Serial.println("RTC Tidak Terhubung");
  while(1);
 }
 //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
}

void loop() {
  DateTime now =rtc.now();
 int tahun =now.year();
 int bulan = now.month();
 int tanggal = now.day();
 int jam =now.hour();
 int menit =now.minute();
 int detik =now.second();
 Serial.println(String() + "Tanggal: " + tanggal + "-" + bulan + "-" + tahun);
 Serial.println(String() + "Waktu  : " + jam + ":" + menit + ":" + detik);
 Serial.println();
 delay(1000);
if( (jam==8) && (menit == 51) && (detik == 1) ){
  digitalWrite (4, HIGH);
  delay (5000);
  digitalWrite (4, LOW);
}
}