DS1302 Real Time Clock Module

Slipped this into a weekend project and the 24-hour clock mode made setting up time-based sensor logs dead simple. The battery backup held through a few power cycles without losing a second.

The battery-backed clock keeps accurate time even after power loss, which is exactly what I needed for my data logger project. The 24-hour format with seconds is perfect for precise logging intervals.

Setting up the date and time was straightforward with the included example code, and it keeps accurate seconds even after being unplugged for a day. The compact size fits perfectly in my data logging project without taking up extra space.