DIY Chronodot, homemade RTC with a battery backup

Valentin built a DIY version of the Chronodot real-time clock with battery backup. He used some disc shaped perfboard to assemble all the components.

There is an optional component that you can add – a real time clock (RTC) with battery back up. It is called Chronodot RTC. All it does is ensure that clock is still ticking when main power source is removed, that way you don’t have to reset the clock every time power cord is unplugged. A nice feature┬áto have on any externally powered clock. You can buy one, but where is fun in that?! So I have decided to build my own. By the way this is what Chronodot looks like:

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