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  • Book Overview & Buying Internet of Things with Python
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Internet of Things with Python

Internet of Things with Python

By : Gaston C. Hillar
3.7 (6)
Buy this Book
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Internet of Things with Python

Internet of Things with Python

3.7 (6)
By: Gaston C. Hillar
Buy this Book

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 (13 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Understanding and Setting up the Base IoT Hardware
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1. Understanding and Setting up the Base IoT Hardware
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Understanding the Intel Galileo Gen 2 board and its components
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Recognizing the Input/Output and the Arduino 1.0 pinout
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Recognizing additional expansion and connectivity capabilities
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Understanding the buttons and the LEDs
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Checking and upgrading the board's firmware
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Test your knowledge
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Summary
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2. Working with Python on Intel Galileo Gen 2
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2. Working with Python on Intel Galileo Gen 2
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Setting up the board to work with Python as the programming language
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Retrieving the board's assigned IP address
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Connecting to the board's operating system
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Installing and upgrading the necessary libraries to interact with the board
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Installing pip and additional libraries
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Invoking the Python interpreter
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Test your knowledge
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Summary
3
3. Interacting with Digital Outputs with Python
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3. Interacting with Digital Outputs with Python
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Turning on and off an onboard component
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Prototyping with breadboards
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Working with schematics to wire digital outputs
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Counting from 1 to 9 with LEDs, Python code and the mraa library
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Taking advantage of object-oriented code to control digital outputs
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Improving our object-oriented code to provide new features
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Isolating the pin numbers to improve wirings
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Controlling digital outputs with the wiring-x86 library
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Test your knowledge
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Summary
4
4. Working with a RESTful API and Pulse Width Modulation
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4. Working with a RESTful API and Pulse Width Modulation
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Printing numbers in LEDs with a RESTful API
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Composing and sending HTTP requests
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Wiring pins with PWM capabilities
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Using PWM to generate analog values
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Generating analog values via HTTP requests
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Preparing the RESTful API for Web application requirements
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Using PWM plus a RESTful API to set colors for an RGB LED
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Controlling PWM with the wiring-x86 library
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Test your knowledge
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Summary
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5. Working with Digital Inputs, Polling and Interrupts
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5. Working with Digital Inputs, Polling and Interrupts
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Understanding pushbuttons and pullup resistors
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Wiring digital input pins with pushbuttons
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Reading pushbutton statuses with digital inputs and the mraa library
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Reading pushbutton statuses and running a RESTful API
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Reading digital inputs with the wiring-x86 library
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Using interrupts to detect pressed pushbuttons
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Test your knowledge
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Summary
6
6. Working with Analog Inputs and Local Storage
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6. Working with Analog Inputs and Local Storage
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Understanding the analog inputs
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Wiring an analog input pin with a voltage source
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Measuring voltage with analog inputs and the mraa library
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Wiring a photoresistor to an analog input pin
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Determining the darkness level with analog inputs and the mraa library
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Firing actions when the environment light changes
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Controlling analog inputs with the wiring-x86 library
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Logging to files in the local storage
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Working with USB attached storage
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Test your knowledge
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Summary
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7. Retrieving Data from the Real World with Sensors
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7. Retrieving Data from the Real World with Sensors
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Understanding sensors and their connection types
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Working with accelerometers
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Wiring an analog accelerometer to the analog input pins
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Measuring three axis acceleration with an analog accelerometer
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Wiring a digital accelerometer to the I2C bus
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Measuring three axis acceleration with a digital accelerometer
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Using the I2C bus to control a digital accelerometer with the mraa library
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Wiring an analog temperature sensor
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Measuring ambient temperature with an analog sensor
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Wiring a digital temperature and humidity sensor to the I2C bus
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Measuring temperature and humidity with a digital sensor
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Test your knowledge
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Summary
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8. Displaying Information and Performing Actions
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8. Displaying Information and Performing Actions
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Understanding LCD displays and their connection types
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Wiring an LCD RGB backlight to the I2C bus
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Displaying text on an LCD display
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Wiring an OLED dot matrix to the I2C bus
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Displaying text on an OLED display
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Wiring a servo motor
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Positioning a shaft to indicate a value with a servo motor
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Test your knowledge
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Summary
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9. Working with the Cloud
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9. Working with the Cloud
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Publishing data to the cloud with dweepy
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Building a web-based dashboard with Freeboard
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Sending and receiving data in real-time through Internet with PubNub
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Publishing messages with commands through the PubNub cloud
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Working with bi-directional communications
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Publishing messages to the cloud with a Python PubNub client
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Using MQTT with Mosquitto and Eclipse Paho
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Publishing messages to a Mosquitto broker with a Python client
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Test your knowledge
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Summary
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10. Analyzing Huge Amounts of Data with Cloud-based IoT Analytics
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10. Analyzing Huge Amounts of Data with Cloud-based IoT Analytics
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Understanding the relationship between Internet of Things and Big Data
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Understanding the Intel IoT Analytics structure
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Setting up devices in Intel IoT Analytics
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Setting up components in Intel IoT Analytics
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Collecting sensor data with Intel IoT Analytics
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Analyzing sensor data with Intel IoT Analytics
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Triggering alerts with rules in Intel IoT Analytics
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Test your knowledge
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Summary
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A. Exercise Answers
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Chapter 1, Understanding and Setting up the Base IoT Hardware
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Chapter 2, Working with Python on Intel Galileo Gen 2
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Chapter 3, Interacting with Digital Outputs with Python
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Chapter 4, Working with a RESTful API and Pulse Width Modulation
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Chapter 5, Working with Digital Inputs, Polling and Interrupts
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Chapter 6, Working with Analog Inputs and Local Storage
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Chapter 7, Retrieving Data from the Real World with Sensors
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Chapter 8, Displaying Information and Performing Actions
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Chapter 9, Working with the Cloud
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Chapter 10, Analyzing Huge Amounts of Data with Cloud-based IoT Analytics
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Index
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Index

Chapter 1. Understanding and Setting up the Base IoT Hardware

In this chapter, we will start our journey towards Internet of Things (IoT) with Python and the Intel Galileo Gen 2 board. Python is one of the most popular and versatile programming languages. You can use Python to create multiplatform desktops and Web, mobile, and scientific applications. You can work with huge amounts of data and develop the complex algorithms that are popular in Big Data scenarios with Python. There are thousands of Python packages, which allow you to extend Python capabilities to any kind of domain you can imagine.

We can leverage our existing knowledge of Python and all of its packages to code the different pieces of our IoT ecosystem. We can use the object-oriented features, which we love from Python. in code that interacts with the Intel Galileo Gen 2 board and the electronic components connected to it. We can use the different packages that make it possible for us to easily run a Web server and provide a RESTful API. We can use all the packages that we already know to interact with databases, Web services, and different APIs. Python makes it easy for us to jump into the IoT world. We don't need to learn another programming language, we can use the one we already know and love.

First, we will learn about the features included in the Intel Galileo Gen 2 board. We will:

  • Understand the Intel Galileo Gen 2 board and its components
  • Recognize the Input/Output and the Arduino 1.0 pinout
  • Learn about the additional expansion and connectivity capabilities
  • Understand the buttons and the LEDs found in the board
  • Check and upgrade the board's firmware
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