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

Chapter 4. Working with a RESTful API and Pulse Width Modulation

In this chapter, we will interact with the board with HTTP requests and we will use pulse width modulation to generate different output voltages. We shall:

  • Work with the Tornado web server to build a RESTful API in Python

  • Compose and send HTTP requests to print numbers in LEDs

  • Work with pulse width modulation to control the output voltage in pins

  • Fade in and fade out LEDs connected to the board

  • Use different tools to compose and send HTTP requests that interact with the board

  • Build a RESTful API to mix red, green and blue and generate millions of colors with an RGB LED

  • Use the mraa and wiring-x86 libraries to control pulse width modulation