March 2017
Beginner to intermediate
422 pages
8h 4m
English
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Interfacing RTC to get accurate time
The real-time clock (RTC) is a way to keep the right time even if you've lost power. The low-power requirements of a clock make it easy to accurately keep time, and it can run for years on just a small battery. If your Raspberry Pi Zero is going to live somewhere it will be off and unable to access an NTP server over a network, an RTC board will help when keeping accurate time is important.
Getting ready
You'll need an RTC board. I used the board included in the Elego Super Complete Starter Kit, which uses the DS3231 chip. There are a few different RTC boards available, most of which will work with your Raspberry Pi Zero.
You'll also need to ensure that I2C is enabled on your RPZ. The recipe on I2C basics in ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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