![Erriez DS3231 high precision I2C RTC library for Arduino: DS3231 high precision I2C RTC library for Arduino Erriez DS3231 high precision I2C RTC library for Arduino: DS3231 high precision I2C RTC library for Arduino](https://raw.githubusercontent.com/Erriez/ErriezDS3231/master/extras/DS3231_Arduino_UNO.png)
Erriez DS3231 high precision I2C RTC library for Arduino: DS3231 high precision I2C RTC library for Arduino
![Amazon.com: Wishiot DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5) : Electronics Amazon.com: Wishiot DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5) : Electronics](https://m.media-amazon.com/images/I/517c1nlEe0L._AC_UF350,350_QL80_.jpg)
Amazon.com: Wishiot DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5) : Electronics
![RTC DS3231's SQW pin goes LOW when on Vbat and triggers an unsolicited interrupt - Sensors - Arduino Forum RTC DS3231's SQW pin goes LOW when on Vbat and triggers an unsolicited interrupt - Sensors - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/9/c/a/9ca84dffd753e0365368bf94e3a71cbe8098fed7.jpeg)
RTC DS3231's SQW pin goes LOW when on Vbat and triggers an unsolicited interrupt - Sensors - Arduino Forum
![mosfet - How to switch ON a Raspberry Pi, Arduino, ESP32, etc from SQW pin of RTC DS3231 - Electrical Engineering Stack Exchange mosfet - How to switch ON a Raspberry Pi, Arduino, ESP32, etc from SQW pin of RTC DS3231 - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/S9krN.jpg)