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 ...

For the most part, the build is what you would expect: a 16×8 LED Matrix display driven by a TLC5920 LED driver, with an Arduino that uses a DS1307 RTC (real-time clock) with a coin cell battery ...