sparkfun RV-8803 Hook-Up Manual page 23

SAMD21 Mini/Dev Breakout Hookup Guide
An introduction to the Atmel ATSAMD21G18 microprocessor and our Mini
and Pro R3 breakout boards. Level up your Arduino-skills with the
powerful ARM Cortex M0+ processor.
Or check out some of these blog posts for project ideas:
Enginursday: Battle of the RTC
OCTOBER 6, 2016
Real Time Clock Module Hookup Guide
A quick introduction to the DS1307 RTC module and a hookup guide for
the SparkFun Breakout.
Hardware Hump Day: Earth Day Hacking
APRIL 19, 2017