Book Image

Internet of Things with Python

By : Gaston C. Hillar
Book Image

Internet of Things with Python

By: Gaston C. Hillar

Overview of this book

Internet of Things (IoT) is revolutionizing the way devices/things interact with each other. And when you have IoT with Python on your side, you'll be able to build interactive objects and design them. This book lets you stay at the forefront of cutting-edge research on IoT. We'll open up the possibilities using tools that enable you to interact with the world, such as Intel Galileo Gen 2, sensors, and other hardware. You will learn how to read, write, and convert digital values to generate analog output by programming Pulse Width Modulation (PWM) in Python. You will get familiar with the complex communication system included in the board, so you can interact with any shield, actuator, or sensor. Later on, you will not only see how to work with data received from the sensors, but also perform actions by sending them to a specific shield. You'll be able to connect your IoT device to the entire world, by integrating WiFi, Bluetooth, and Internet settings. With everything ready, you will see how to work in real time on your IoT device using the MQTT protocol in python. By the end of the book, you will be able to develop IoT prototypes with Python, libraries, and tools.
Table of Contents (19 chapters)
Internet of Things with Python
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Publishing messages with commands through the PubNub cloud


Now, we will take advantage of the PubNub console to send messages with commands to the temperature channel and make the Python code running on the board process these commands. In case you have logged out of PubNub, login again and click on the Temperature Control pane in the Admin Portal. PubNub will display the Demo Keyset pane.

Click on the Demo Keyset pane and PubNub will display the publish, subscribe, and secret keys. This way, we select the keyset that we want to use for our PubNub application.

Click on Debug Console on the sidebar located the left-hand side of the screen. PubNub will create a client for a default channel and subscribe to this channel using the secret keys we have selected in the previous step. We want to subscribe to the temperature channel, and therefore, enter temperature in the Default Channel textbox within a pane that includes the Add client button at the bottom. Then, click on Add client and PubNub will...