You must, first of all, upload the "TimeRTCSet.pde" example of the Time library (obviously to set the time on DS1307 RTC), then you can upload my sketch. Check connections between Arduino and LCD, ...

This repository contains code and resources for interfacing an Arduino with a Real-Time Clock (RTC) module and an I2C LCD display. The RTC module keeps track of the current time and date even when the ...

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 ...