sparkfun RV-1805 Hook-Up Manual

Qwiic Real Time Clock Module (RV-1805) Hookup Guide
Introduction
The Qwiic Real Time Clock (RTC) module is a Qwiic-enabled breakout board for the RV-1805 module! The RTC is
ultra-low power (running at about 22 nA in its lowest power setting) so it can use a supercapacitor for backup
power instead of a normal battery. This means infinite charge and discharge cycles without any degradation to the
"battery" (in this case, a supercapacitor). The breakout board is also a part of SparkFun's Qwiic system, so you
won't have to do any soldering to figure out what time it is.
SparkFun Real Time Clock Module - RV-1805 (Qwiic)
 BOB-14558
In this hookup guide, we'll take advantage of the Arduino IDE to automatically set the time of the RTC to the
compiler time. Once we have the time set, we'll set the alarm to a time of our choice and have it generate a signal
on the interrupt pin. We'll also look at how charged the RTC is so we know when to unplug the RTC from power
(when it's full of course). Finally, we'll look at how to store other data into the RTC so we can keep important
variables safe when our system loses power. We'll also go over how to extend the battery life of your RTC by
adding an external battery.
Required Materials
To get started, you'll need a microcontroller to control everything in your project.
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O O U C C A R U T N Y
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