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

Python libraries for the Raspberry Pi


We will turn our attention to the Python libraries or packages that come pre-installed with Raspbian. To view these packages from Thonny, click on Tools | Manage Packages. After a short delay, you should see many packages listed in the dialog:

 

Let's explore a few of these packages.

picamera

The camera port, or CSI, on the Raspberry Pi allows you to connect the specially designed Raspberry Pi camera module to your Pi. This camera can take both photos and videos, and has functionality to do time-lapse photography and slow-motion video recording. The picamera package gives us access to the camera through Python. The following is a picture of a Raspberry Pi camera module connected to a Raspberry Pi 3 Model B through the camera port:

Connect your Raspberry Pi camera module to your Pi, open up Thonny, and type in the following code:

import picamera
import time

picam = picamera.PiCamera()
picam.start_preview()
time.sleep(10)
picam.stop_preview()
picam.close()

This...