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 Raspberry Pi's GPIO


Through the GPIO, we are able to connect to the outside world. Here is a diagram of the Raspberry Pi GPIO pins:

The following is an explanation of these pins:

  • Red pins represent power coming out of the GPIO. The GPIO provides 3.3 Volts and 5 Volts.
  • Black pins represent pins used for electrical ground. As you can see, there are 8 ground pins on the GPIO.
  • Blue pins are used for Raspberry Pi Hardware Added on Top (HATs). They allow communication between the Raspberry Pi and the HAT's Electrical Erasable Programmable Read-Only Memory (EEPROM).
  • Green pins represent the input and output pins that we may program for. Please note that some of the green GPIO pins double up with additional functionality. We will not be covering the additional functionality for this project.

The GPIO is what lies at the heart of the Raspberry Pi. We can connect LEDs, buttons, buzzers, and so on to the Raspberry Pi through the GPIO. We can also access the GPIO through HATs designed for the Raspberry...