int buzzer = 5; 

#include <Wire.h>
#include "LiquidCrystal_I2C.h"
#include <RTClib.h>

RTC_DS1307 rtc;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(buzzer, OUTPUT); 
  
  Serial.begin(9600);
  Wire.begin();

  if (! rtc.begin()) 
  {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

  lcd.init();
  lcd.backlight();
  lcd.print("yes");
}

void loop() {
  // put your main code here, to run repeatedly:
  tone(buzzer, 200); //membunyikan buzzer sebesar 200Hz, boleh diubah-ubah sesuai dengan keinginan, semakin tinggi frekuensi semakin tinggi pula suara buzzernya
  delay(2000);
  tone(buzzer, 250);
  delay(2000);

  DateTime now = rtc.now();
  Serial.print(now.hour());
  Serial.print(":");
  Serial.print(now.minute());
  Serial.print(":");
  Serial.print(now.second());
  Serial.println(" ");

  lcd.setCursor( 0,0);
  lcd.print(now.hour());
  lcd.print(":");
  lcd.print(now.minute());
  lcd.print(":");
  lcd.print(now.second());

  if ((now.hour() == 7 and now.minute() == 0 and now.second() == 0)) {
    // myStepper.step(1000);
  }

  delay(1000);
}