Select "Soldered Inkplate 6COLOR" from Tools -> Board menu. This example will show you how to use RTC alarm interrupt with deep sleep.

This Arduino based Real time clock is a digital clock to display real time using a RTC IC DS1307 which works on I2C protocol. Real time clock means it runs even after power failure. When power is ...

An arduino nano - DS3231 RTC setup for setting an alarm at a precise time - Ovidiu22/RTC_DS3231-alarm ...

In this article we discussed how RTC Module works and how we can interface it with Arduino to build DIY Arduino digital clock.

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 ...

This project describes how to make the alarm clock radio in Arduino. This is a simple project and can assemble within a few bucks.

Watch this video on YouTube. Full instructions on how to create your very own Arduino music player and alarm clock have been kindly published by Dejan Nedelkovski with all the code you require.