The RTC module is crucial for keeping accurate time, even when the Arduino is powered off. It maintains the time using a small battery, ensuring that the clock remains accurate.

A header connects to an Arduino, which provides power and control over I2C. If you’re looking for an application, [Jason]’s prototype single-sideband radio shows the chip in action.

The build relies on an Arduino Pro Mini to run the show, paired with a DS3231 real-time clock module. The latter part is of great importance, as without it, the Arduino would not keep accurate time.

Arduino enthusiasts, makers and hobbyists looking for inspiration for their next project might be interested in a unique Arduino clock aptly named the Time Slider.

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...