This is a simple program, turns on and off the LED, this parameter is SET.

This is a modified library of digital clocks for LCD 1602 with support for Russian characters. The original project from XOD "Digital Clock Example — Working with RTC Modules" was taken as a basis. If you wish, you can contact me via Google mail.

This example describes how to use the datetime and ds-rtc libraries, format date and time values, and work with real-time clock (RTC) modules for Arduino. Upon the completion of this guide, you will learn how to create a simple digital clock based on a DS1307 I2C RTC module and I2C LCD display.