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

Working with schematics to wire digital outputs


Now, it is time to take advantage of the prototyping capabilities of the breadboard and start working on a more complex example. We will turn on and off 9 LEDs by using 9 digital outputs of the Intel Galileo Gen 2 board. Each digital output is going to control whether an LED is turned on or turned off.

After we finish the necessary wirings, we will write Python code that counts from 1 to 9 by controlling the digital output to turn on the necessary number of LEDs. In this case, our first approach won't be the best one. However, after we learn many things, we will create new versions and we will improve both the initial prototype and the Python code.

We need the following parts to work with this example:

  • Three red ultrabright 5mm LEDs

  • Three white ultrabright 5mm LEDs

  • Three green ultrabright 5mm LEDs

  • Nine 270Ω resistors with 5% tolerance (red violet brown gold)

The following diagram shows the components connected to the breadboard, the necessary wirings...