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

Wiring a digital temperature and humidity sensor to the I2C bus


Now, we will use a multifunctional digital sensor that will provide us with temperature and relative humidity information. We will use a breakout board that uses the I2C bus to allow the Intel Galileo Gen 2 board to communicate with the sensor. The sensor is useful when we don't need to measure temperature and humidity in extreme conditions. We cannot use this sensor at the top of Mount Etna, just in case we work in a research project related to volcanoes.

We will use the two pins labeled SDA and SCL to connect the data and clock lines of the I2C bus to the corresponding pins in the digital temperature and humidity breakout board. After we finish the necessary wirings, we will write a Python code to measure, display the ambient temperature, and the relative humidity. This way, we will read the result of sending commands to the sensor through the I2C bus, reading the responses, and decoding them into the ambient temperature and...