Connect the alarm pin (named SQW) of the DS3231 module to a pin on the Arduino that can be used for interrupts. Set an alarm on the DS3231 clock. Enable the Arduino's main loop to ignore the clock ...

A simple project to display real-time clock data on an I2C 16x2 LCD using an Arduino and DS3231 RTC module. Displays time and date in real-time. Uses I2C communication for both RTC and LCD. Easy to ...