ESP8266: Connection to DS3231 RTC - techtutorialsx
GitHub - sleemanj/DS3231_Simple: An Arduino Library for EASY communication with DS3231 I2C RTC Clock and Atmel AT24C32 I2C EEPROM commonly found on the same board. Implements setting, getting the time/date, setting, checking
Real Time Clock - Modulo RTC DS3231 - Configuracion y Programacion - YouTube
17 Time with RTC(DS3231) by using ESP32 Arduino - YouTube
Arduino and DS3231 real time clock - Simple Projects
DS3231 - Rinky-Dink Electronics
In-Depth: Interface DS3231 Precision RTC Module with Arduino