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 three axis acceleration with an analog accelerometer


The upm library includes support for the three axis analog accelerometer breakout board in the pyupm_adxl335 module. The ADXL335 class declared in this module represents a three axis analog accelerometer connected to our board. The class makes it easy to calibrate the accelerometer and convert the raw values read from the analog inputs into values expressed in the g unit.

We will create a new Accelerometer class to represent the accelerometer and make it easier for us to retrieve the acceleration values without worrying about type conversion that are necessary when working with an instance of the ADXL335 class. We will use the ADXL335 class to interact with the accelerometer. The following lines show the code for the new Accelerometer class that works with the upm library, specifically with the pyupm_adxl335 module. The code file for the sample is iot_python_chapter_07_01.py.

import pyupm_adxl335 as upmAdxl335
import time


class...