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DS3231 OLED clock – Added Alarm function

DS3231 OLED clock – Added Alarm function

This is an OLED alarm clock built using an Arduino Micro, a tiny OLED 128×64 display using the SSD1306 controller and I2C interface, and a precision DS3231-based real-time clock module with rechargeable battery backup. It features a menu system for setting the RTC (no serial port or USB required).

 

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