July 2017
Beginner to intermediate
352 pages
7h 30m
English
Content preview from Making Things Smart
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Chapter 14. Cutting the Cord: Radio Signals
While infrared is nice and simple, there are some real drawbacks. For instance, the low data rate and the need to have line of sight to the receiver.
The next step is to use proper radio transmission. There are plenty of different types of radio transmission for data: there’s Bluetooth, Bluetooth Low Energy (sometimes known as Bluetooth Smart or BLE), Zigbee, WiFi, LoRa, and many others.
While very powerful, most of these systems use complicated radio transceiver chips. However, there are still some radios that are extremely simple—for example, the kind often used by cheap wireless sensors or wireless doorbells.
These use simple AM transmitters and receivers (see Figure 14-1) that transmit in the free ...
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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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