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

Measuring temperature and humidity with a digital sensor


The upm library includes support for the digital temperature and humidity breakout board that uses the TH02 sensor in the pyupm_th02 module. The TH02 class declared in this module represents a digital temperature and humidity sensor that uses the TH02 sensor, connected to our board. The class makes it easy to initialize the sensor and retrieve the temperature and humidity values through the I2C bus. The class works with the mraa.I2c class under the hoods to talk with the sensor, that is, to write data to and read data from the TH02 sensor that acts as a slave device connected to the I2C bus.

We will create a new TemperatureAndHumiditySensor class to represent the temperature and humidity sensor and make it easier for us to retrieve the temperature and humidity values in the appropriate units working with an instance of the TH02 class. We will use the TH02 class to interact with the sensor. The following lines show the code for the...