This SD2405 library provides a interface to read and write the date and time to and from the I2C SD2405 RTC device and compatibles (SD2405AL). Furthermore one can set alarms in many formats. An unique ...

Take a search for "RTC library" in your Arduino IDE or on GitHub and you'll find a plethora of existing libraries. Yes, many of them are great, but many of them are not. Many of them are old, outdated ...

Here is the circuit diagram of a compact RTC module, based on the popular RTC IC DS1307, for your everyday microcontroller projects. The DS1307 serial real-time clock (RTC) is a lowpower, full ...

The most popular RTC for the Arduino is the DS1307. However, it does have some drawbacks, the most notable of which is that its operating voltage is 5v, which means it cannot be used with 3.3v ...

Teyleten Robot DS3231SN DS3231 Real Time Clock Module RTC Clock AT24C32 Without Battery for Arduino Raspberry (5PCS) , HiLetgo 5pcs DS3231 High Precision RTC Real Time Clock Module 5V for Arduino ...