In this chapter, we learned a lot about Bluetooth Classic, starting with a brief introduction on how the radio works and the network topology for Bluetooth Classic connections. We demonstrated how we could configure the Bluetooth HC-05 Bluetooth module as both a slave and master. We also saw how we could configure the Bluetooth modules to connect to each other on startup automatically. Finally, we saw how we could stream data from one device to another using Bluetooth classic.
In Chapter 20, Bluetooth LE, and this chapter we looked at two different Bluetooth technologies, but the question may still be when to use which one. When we have a use case that defines that we want one device to ask another device for information periodically, like a weather station, we generally want to use Bluetooth LE. When we want to stream data from one device to another without waiting for...