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Hi Andrew, Yes, it was a typo it should be DS3231 I have made some adjustments to the guide to improve it, including how to get crontab to write the system time to the RTC regularly and keep a historical log of the adjustments etc.. Also how to then install NTP and set other linux and windows machin...

PURPOSE: The purpose of this guide is to configure an RTC clock to work with Ubuntu on a Raspberry Pi. Without an RTC when your PI has been off a long time the system time will not update until it connects to the internet. The system can then encounter errors until the ntp service synchronises with...