Download the code and copy it to arduino IDE. Install the timelib library to the Arduino. Install the program to the RTC module using arduino microcontroller.

Using an Arduino Uno R4 WiFi, if the RTC date is set to before 2000-01-01, it will incorrectly report the date when it is read back from the RTC. For an easy repro, see the sketch I have provided in ...

Teyleten Robot DS3231SN DS3231 Real Time Clock Module RTC Clock AT24C32 Without Battery for Arduino Raspberry(5PCS) HiLetgo 5pcs DS3231 High Precision RTC Real Time Clock Module 5V for Arduino ...

The most popular RTC for the Arduino is the DS1307. However, it does have some drawbacks, the most notable of which is that its operating voltage is 5v, which means it cannot be used with 3.3v ...