You should now be ready to try your concentrator with the controller application. While some details have been left to the reader, they are available in the ConcentratorXmpp project in the GitHub repository. When it runs, it makes the necessary registrations in the Thing Registry. The controller application will now be able to find both registrations and use them, if necessary. The controller application is already prepared for handling node identities, data sources, and partitions, as described in Chapter 10, The Controller.

You can also use the simple IoT Client presented in Chapter 9, Social Interaction with Your Devices Using XMPP to interact with your concentrator. A concentrator will be expandable. You can expand it to view available data sources. Data sources with nodes (or with other child sources) will in turn be expandable, as will nodes with child nodes. You interact with the embedded nodes as you would any other type of sensor or actuator: