DS3231 Real-Time-Clock . Contribute to jarzebski/Arduino-DS3231 development by creating an account on GitHub.

All designs communicate with a Bluetooth serial terminal app on a phone or tablet but also includes a rotary encoder and DS3231 RTC time module to set the time and keep the time accurate to 20 seconds ...

A square IPS LCD display is used to display an analog-style watch face, and time is kept by a DS3231 real-time clock. A pair of small vibration sensors are used to wake the watch when the user ...

It also uses a DS3231 real-time clock module as a backup, keeping accurate time even when a network connection is unavailable. Time is displayed via a 60-pixel ring of WS2812B addressable LEDs.