Adafruit’s got a handy breakout board for the DS1307 RTC available. This chip isn’t nearly as accurate as the DS3231 used in the Chronodot but it’s quite a bit cheaper. The breakout makes ...
The DS1307 has the proud title of being the de facto RTC for those experimenting with microcontrollers. Running off 5 V, with a 500 nA current draw on battery backup, it’s the barebones solution ...
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