Book Image

Mastering IOT

By : Colin Dow, Perry Lea
Book Image

Mastering IOT

By: Colin Dow, Perry Lea

Overview of this book

The Internet of Things (IoT) is the fastest growing technology market. Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. We’ll begin our journey with an introduction to Raspberry Pi and quickly jump right into Python programming. We’ll learn all concepts through multiple projects, and then reinforce our learnings by creating an IoT robot car. We’ll examine modern sensor systems and focus on what their power and functionality can bring to our system. We’ll also gain insight into cloud and fog architectures, including the OpenFog standards. The Learning Path will conclude by discussing three forms of prevalent attacks and ways to improve the security of our IoT infrastructure. By the end of this Learning Path, we will have traversed the entire spectrum of technologies needed to build a successful IoT system, and will have the confidence to build, secure, and monitor our IoT infrastructure. This Learning Path includes content from the following Packt products: Internet of Things Programming Projects by Colin Dow Internet of Things for Architects by Perry Lea
Table of Contents (34 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Free Chapter
1
The IoT Story
Index

Accessing weather data from the cloud


In Chapter 13Subscribing to Web Services, we wrote a Python program to access weather data from Yahoo! Weather. The class, CurrentWeather, from that program returned the temperature, weather conditions, and wind speed for the city value that the class was instantiated with.

We will revisit that code and change the class name to WeatherData. We will also add a method to return a value from 0-100 to indicate the weather. We will take the temperature and wind speed into account when determining this number, with 0 being extreme winter-like conditions and 100 being very hot extreme summer conditions. We will use this number to control our servo. We will also check to see whether it is raining and update our LED to indicate whether or not we need an umbrella:

  1. Open up Thonny from Application Menu | Programming | Thonny Python IDE
  2. Click on the New icon to create a new file
  1. Type the following into the file:
from weather import Weather, Unit

class WeatherData:...