Book Image

Internet of Things Programming Projects

By : Colin Dow
Book Image

Internet of Things Programming Projects

By: Colin Dow

Overview of this book

The Internet of Things (IOT) has managed to attract the attention of researchers and tech enthusiasts, since it powerfully combines classical networks with instruments and devices. In Internet of Things Programming Projects, we unleash the power of Raspberry Pi and Python to create engaging projects. In the first part of the book, you’ll be introduced to the Raspberry Pi, learn how to set it up, and then jump right into Python programming. Then, you’ll dive into real-world computing by creating a“Hello World” app using flash LEDs. As you make your way through the chapters, you’ll go back to an age when analog needle meters ruled the world of data display. You’ll learn to retrieve weather data from a web service and display it on an analog needle meter, and build a home security system using the Raspberry Pi. The next project has a modern twist, where we employ the Raspberry Pi to send a signal to a web service that will send you a text when someone is at the door. In the final project, you take what you've learned from the previous two projects and create an IoT robot car that you can use to monitor what your pets are up to when you are away. By the end of this book, you will be well versed in almost every possible way to make your IoT projects stand out.

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Table of Contents (21 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Installing Raspbian on the Raspberry Pi
Installing Raspbian on the Raspberry Pi
A brief history of the Raspberry Pi
A look at operating systems for the Raspberry Pi
Project overview
Getting started
Installing the Raspbian OS
A quick overview of the Raspbian OS
Summary
Questions
Further reading
2
Writing Python Programs Using Raspberry Pi
Writing Python Programs Using Raspberry Pi
Project overview
Technical requirements
Python tools for Raspberry Pi
Using the Python command line
Writing a simple Python program
Summary
Questions
Further reading
3
Using the GPIO to Connect to the Outside World
Using the GPIO to Connect to the Outside World
Project overview
Technical requirements
Python libraries for the Raspberry Pi
Accessing Raspberry Pi's GPIO
Setting up the circuit
Hello LED
Summary
Questions
Further reading
4
Subscribing to Web Services
Subscribing to Web Services
Prerequisites
Project overview
Getting started
Cloud services for IoT
A basic Python program to pull data from the cloud
Summary
Questions
Further reading
5
Controlling a Servo with Python
Controlling a Servo with Python
Knowledge required to complete this chapter
Project overview
Getting started
Wiring up a servo motor to the Raspberry Pi
Control the servo through the command line
Write a Python program to control the servo
Summary
Questions
Further reading
6
Working with the Servo Control Code to Control an Analog Device
Working with the Servo Control Code to Control an Analog Device
Knowledge required to complete this chapter
Project overview
Getting started
Accessing weather data from the cloud
Controlling the servo using weather data
Enhancing our project
Summary
Questions
Further reading
7
Setting Up a Raspberry Pi Web Server
Setting Up a Raspberry Pi Web Server
Knowledge required to complete this chapter
Project overview
Getting started
Introducing CherryPy – a minimalist Python web framework
Creating a simple web page using CherryPy
Summary
Questions
Further reading
8
Reading Raspberry Pi GPIO Sensor Data Using Python
Reading Raspberry Pi GPIO Sensor Data Using Python
Project overview
Getting started
Reading the state of a button
Reading the state from an infrared motion sensor
Modifying Hello LED using infrared sensor
Summary
Questions
Further reading
9
Building a Home Security Dashboard
Building a Home Security Dashboard
Knowledge required to complete this chapter
Project overview
Getting started
Creating our dashboard using CherryPy
Displaying sensory data on our dashboard
Summary
Questions
Further reading
10
Publishing to Web Services
Publishing to Web Services
Project overview
Getting started
Publishing sensory data to cloud-based services
Setting up an account for text message transmission
Summary
Questions
Further reading
11
Creating a Doorbell Button Using Bluetooth
Creating a Doorbell Button Using Bluetooth
Project overview
Getting started
Introducing Blue Dot
Wiring up our circuit
Reading our button state using Bluetooth and Python
Summary
Questions
Further reading
12
Enhancing Our IoT Doorbell
Enhancing Our IoT Doorbell
Project overview
Getting started
Sending a text message when someone is at the door
Summary
Questions
Further reading
13
Introducing the Raspberry Pi Robot Car
Introducing the Raspberry Pi Robot Car
The parts of the robot car
Building the robot car
Learning how to control the robot car
Summary
Questions
14
Controlling the Robot Car Using Python
Controlling the Robot Car Using Python
Knowledge required to complete this chapter
Project overview
Getting started
Taking a look at the Python code
Modifying the robot car Python code
Enhancing the code
Summary
Questions
Further reading
15
Connecting Sensory Inputs from the Robot Car to the Web
Connecting Sensory Inputs from the Robot Car to the Web
Knowledge required to complete this chapter
Project overview
Getting started
Identifying the sensor on the robot car
Reading robot car sensory data with Python
Publishing robot car sensory data to the cloud
Create a ThingsBoard device
Summary
Questions
Further reading
16
Controlling the Robot Car with Web Service Calls
Controlling the Robot Car with Web Service Calls
Knowledge required to complete this chapter
Project overview
Technical requirements
Reading the robot car's data from the cloud
Using a Python program to control a robot car through the cloud
Summary
Questions
Further reading
17
Building the JavaScript Client
Building the JavaScript Client
Project overview
Getting started
Introducing JavaScript cloud libraries
Connecting to cloud services using JavaScript
Summary
Questions
Further reading
18
Putting It All Together
Putting It All Together
Project overview
Getting started
Building a JavaScript client to connect to our Raspberry Pi
Creating a JavaScript client to access our robot car's sensory data
Enhancing our JavaScript client to control our robot car
Summary
Questions
Further reading
19
Assessments
Assessments
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
20
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The parts of the robot car

I designed T.A.R.A.S to be as simple to put together as possible. T.A.R.A.S consists of a laser cut hardboard chassis, 3D printed wheel, and camera mount parts (there is an option to use laser cut wheel mounts, too). In order for you to build T.A.R.A.S, I have provided SVG files for the chassis and STL files for the 3D printed parts. All other parts may be purchased online. The following is a photo of T.A.R.A.S. before assembly:

  1. Servo camera mount (shown assembled)—search www.aliexpress.com for a camera platform anti-vibration camera mount
  2. 3D printed bracket (camera brace)
  3. DC motors for wheels (shown with motor wires and extension wires attached)—search www.aliexpress.com for a smart car robot plastic tire wheel
  4. Wheel mounts (3D printed)
  5. LEDs
  6. LED holders—search www.aliexpress.com for a lamp LED holder black clip
  7. Camera mount brace...
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