There are only four components: an Arduino Nano, a DS3231 RTC module, a SSD1306 128×64 OLED module, and a momentary pushbutton.

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.

The Arduino Nano ESP32 with WS2812 RGB or SK6812 RGBW Pro WIFI and BLE in the microprocessor to control the clock from a phone or PC. NTP time from the internet in combination with the DS3231 RTC ...

DS3231 RTC Driver for esp-idf. Contribute to nopnop2002/esp-idf-ds3231 development by creating an account on GitHub.

Learn how to interface ESP32 thermal printer with complete tutorial. Includes PNP-500 wiring, Arduino code, circuit diagrams, and projects for receipt printing, barcodes, and QR codes. Perfect for ...