Preface
One of the drivers behind the recent explosive growth in the Internet of Things has been the Bluetooth Low Energy (LE) standard. What makes it so appealing is the ubiquity of smartphones—both Apple and otherwise—with support for the standard, which means that thing-makers no longer have to worry about a display or user interface. And that means that things like smart lightbulbs can look a lot more like lightbulbs rather than a computer that happens to have a light attached to it.
Bluetooth LE is very different from classic Bluetooth—in fact, pretty much the only thing that is the same is the name. You’re probably used to thinking about radios as sort of like serial connections working similarly to a phone call between two phones—once ...
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