Tips and Tricks

Arduino-based clock projects are a staple in the maker and DIY community, and I’ve built a few ones myself. Such projects typically incorporate a real-time clock (RTC) module that keeps track of the time. However, once the battery on the RTC module runs flat, it forgets the previously set time. Another option involves adding a few push buttons to allow users to set the time. The Arduino itself keeps track of the time as long as it’s plugged into a power supply, and it forgets the settings once you disconnect it from the power source. This short article discusses a third option that allows you to make your clock projects much more user-friendly by automatically setting and adjusting the time when necessary.