V3.0 - Using NodeMCU ESP8266 for controlling switches (Relay). Uses RTC (Real Time Clock - DS3231) and NTP (Network Time Protocol) for maintaining time. OLED Display (128x64) for instant updates. A ...
The DS3231 Real Time Clock module includes two alarms. Support for these was added to the Adafruit RTClib. The examples here cover using the alarm. Setting an alarm and polling the SQW pin to monitor ...
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