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 6. Working with Analog Inputs and Local Storage

In this chapter, we will work with analog inputs to transform quantitative values retrieved from the real environment into qualitative values that we will use to fire actions. We will:

  • Understand how analog inputs work

  • Learn about the impact of the resolution of analog to digital converters

  • Measure a voltage with an analog pin and the mraa library

  • Include a photoresistor in a voltage divider and wire an analog input pin with a voltage source

  • Transform a variable resistor into a voltage source

  • Determine the darkness level with analog input and the mraa library

  • Fire actions when the environment light changes

  • Control analog inputs with the wiring-x86 library

  • Work with different local storage options to log events