October 2019
Intermediate to advanced
350 pages
9h 5m
English
Content preview from Hands-On Internet of Things with MQTT
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Chapter 5: Building Your Own Automatic Pet Food Dispenser
- The # character is called a multi-level wildcard. By using it, we subscribe to all subtopics of the topic.
- In this project, we are using the public namespace with the try/try login credentials. It is neither secure nor private, and we just use it because it is easier and more tolerable for a prototype. If you want more security and privacy for your data, you need to use a private channel on Shiftr (or any other MQTT server with private channel functionality).
- If Shiftr stops working at some point, you can just move on to another (free) MQTT server (a list can be found at https://github.com/mqtt/mqtt.github.io/wiki/public_brokers). This is the beauty of MQTT: there are many implementations, ...
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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.