Datasheet

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

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

Once done, restart the IDE

First RTC test

The first thing we'll demonstrate is a test sketch that will read the time from the RTC once a

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. Now load up the matching sketch for your RTC

For the Adafruit Datalogger shield rev B open up Examples->RTClib->pcf8523

For the older Adafruit Dataloggers, use Examples->RTClib->ds1307

Upload it to your Arduino with the datalogger shield on!

If you're having problems make sure you are running the right example! PCF8523 and

DS1307 RTC chips are not identical so they have separate examples!

Now open up the Serial Console and make sure the baud rate is set correctly at 57600

baud you should see the following: