Datasheet

https://adafru.it/cxm

Rename the uncompressed folder RTCLib and check that the RTCLib folder contains RTCLib.cpp and RTCLib.h

Place the RTCLib library folder your arduinosketchfolder/libraries/ folder.

You may need to create the libraries subfolder if its your first library. Restart the IDE.

We also have a great tutorial on Arduino library installation at:

http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use

First RTC Test

The first thing we'll demonstrate is a test sketch that will read the time from the RTC once per second. We'll also show

what happens if you remove the battery and replace it since that causes the RTC to halt. So to start, remove the battery

from the holder while the Arduino is not powered or plugged into USB. Wait 3 seconds and then replace the battery.

This resets the RTC chip.

Load Demo

Open up File->Examples->RTClib->ds3231 and upload to your Arduino wired up to the RTC