Arduino real time clock with alarm and temperature monitor using DS3231

The DS3231 RTC has a built-in two alarm functions and a temperature sensor with a resolution of 0.25 and an accuracy of ±3°C which make this project more easier.
The DS3231 interrupts the microcontroller when there is an alarm (alarm1 or alarm2).
In the circuit there are 3 push buttons: B1, B2 and B3. These buttons are used to set time, calendar and alarms.
The Arduino code below doesn’t use any library for the DS3231.
By reading the datasheet of the DS3231 RTC the code will be more easier!

Download : https://github.com/SarjanaElectro/AlarmRTC_DS3231

DS3231 RTC memiliki dua fungsi alarm dan sensor suhu dengan resolusi 0,25 dan akurasi ± 3 ° C yang membuat proyek ini lebih mudah.
DS3231 menginterupsi mikrokontroler ketika ada alarm (alarm1 atau alarm2).
Di sirkuit ada 3 tombol tekan: B1, B2 dan B3. Tombol-tombol ini digunakan untuk mengatur waktu, kalender dan alarm.
Kode Arduino di bawah ini tidak menggunakan library apa pun untuk DS3231.
Dengan membaca datasheet dari DS3231 RTC kode akan lebih mudah!

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