DS3231 RTC 11 Articles Blackout Logger Keeps Track Of Power Outages November 26, 2022 by Abe Connelly 7 Comments ...

That’s the ticket! He’s using a DS3231 RTC chip, which at +/- 2ppm 32.768kHz is more than precise enough. Some math, programming, and soldering later and the display is complete!

Adafruit has this week added two new add-on boards to their ever-growing range of Feather development boards and accessories with the launch of the DS3231 Precision RTC FeatherWing, RTC and SD ...

Underneath each one is a strand of fiber optic filament powered by an Arduino Nano development board which controls the colors of the clock and a DS3231 RTC module to manage time.