DS1307 features and specs Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the week, and Year with Leap-Year. Compensation Valid Up to 2100 56-Byte, ...

Step 1 The hardware that you need for this are : DS 1307 RTC IC x 1 – datasheet 32.768kHz Quartz Crystal X 1 Coin cell CR2032 & the holder 10k resistor x 2 LCD board x 1 Arduino x 1 This is the backup ...

An Atmega328 is used for the main microcontroller which communicates via I2C both to a DS1307 real time clock (RTC) and a TEA5767 FM module.