April 2017
Beginner to intermediate
312 pages
7h 23m
English
Content preview from Python Programming with Raspberry Pi
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Smart lawn sprinkler
In drought-struck states like California, United States, there are severe restrictions on water usage in certain parts of the state. For example: In summer, some cities passed an ordinance restricting water usage to 250 gallons per day. In such states, it is ridiculous to find lawn sprinklers going off the day before the rain. We are going to build a lawn sprinkler controller that only turns on when there is no rain predicted for the next day.
In order to build a smart lawn sprinkler, we need a flow control solenoid valve (for example, https://www.sparkfun.com/products/10456). Make sure that the valve can meet the water pressure requirements. This flow control valve can be interfaced to the Raspberry Pi Zero using a transistor ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.