Getting Started with Python for the Internet of Things
更新时间：2021-07-02 13:02:27
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Title Page
Copyright and Credits
Getting Started with Python for the Internet of Things
About Packt
Why subscribe?
Packt.com
Contributors
About the authors
Packt is searching for authors like you
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Conventions used
Get in touch
Reviews
Getting Started with a Raspberry Pi 3 Computer
Introduction
Introducing Raspberry Pi
What's with the name?
Why Python?
Python 2 and Python 3
Which version of Python should you use?
The Raspberry Pi family – a brief history of Pi
Which Pi to choose?
Connecting to Raspberry Pi
Getting ready
How to do it...
There's more...
Secondary hardware connections
Using NOOBS to set up your Raspberry Pi SD card
Getting ready
How to do it...
How it works...
There's more...
Changing the default user password
Ensuring that you shut down safely
Preparing an SD card manually
Expanding the system to fit in your SD card
Accessing the RECOVERY/BOOT partition
Using the tools to back up your SD card in case of failure
Networking and connecting your Raspberry Pi to the internet via an Ethernet port using a CAT6 Ethernet cable
Getting ready
How to do it...
There's more...
Using built-in Wi-Fi and Bluetooth on Raspberry Pi
Getting ready
How to do it...
Connecting to your Wi-Fi network
Connecting to Bluetooth devices
Configuring your network manually
Getting ready
How to do it...
There's more...
Networking directly to a laptop or computer
Getting ready
How to do it...
How it works...
There's more...
Direct network link
See also
Networking and connecting your Raspberry Pi to the internet via a USB Wi-Fi dongle
Getting ready
How to do it...
There's more...
Using USB wired network adapters
Connecting to the internet through a proxy server
Getting ready
How to do it...
How it works...
There's more...
Connecting remotely to Raspberry Pi over the network using VNC
Getting ready
How to do it...
There's more...
Connecting remotely to Raspberry Pi over the network using SSH (and X11 forwarding)
Getting ready
How to do it...
How it works...
There's more...
Running multiple programs with X11 forwarding
Running as a desktop with X11 forwarding
Running Pygame and Tkinter with X11 forwarding
Sharing the home folder of Raspberry Pi with SMB
Getting ready
How to do it...
Keeping Raspberry Pi up to date
Getting ready
How to do it...
There's more...
Dividing Text Data and Building Text Classifiers
Introduction
Building a text classifier
How to do it...
How it works...
See also
Pre-processing data using tokenization
How to do it...
Stemming text data
How to do it...
Dividing text using chunking
How to do it...
Building a bag-of-words model
How to do it...
Applications of text classifiers
Using Python for Automation and Productivity
Introduction
Using Tkinter to create graphical user interfaces
Getting ready
How to do it...
How it works...
Creating a graphical application – Start menu
Getting ready
How to do it...
How it works...
There's more...
Displaying photo information in an application
Getting ready
How to do it...
How it works...
There's more...
Organizing your photos automatically
Getting ready
How to do it...
How it works...
Predicting Sentiments in Words
Building a Naive Bayes classifier
How to do it...
See also
Logistic regression classifier
How to do it...
Splitting the dataset for training and testing
How to do it...
Evaluating the accuracy using cross-validation
How to do it...
Analyzing the sentiment of a sentence
How to do it...
Identifying patterns in text using topic modeling
How to do it...
Applications of sentiment analysis
Detecting Edges and Contours in Images
Introduction
Loading displaying and saving images
How to do it...
Image flipping
How to do it...
Image scaling
How to do it...
Erosion and dilation
How to do it...
Image segmentation
How to do it...
Blurring and sharpening images
How to do it...
Detecting edges in images
How to do it...
How it works...
See also
Histogram equalization
How to do it…
Detecting corners in images
How to do it...
Building Face Detector and Face Recognition Applications
Introduction
Building a face detector application
How to do it...
Building a face recognition application
How to do it...
How it works...
See also
Applications of a face recognition system
Using Python to Drive Hardware
Introduction
Controlling an LED
Getting ready
How to do it...
How it works...
There's more...
Controlling the GPIO current
Responding to a button
Getting ready
Trying a speaker or headphone with Raspberry Pi
How to do it...
How it works...
There's more...
Safe voltages
Pull-up and pull-down resistor circuits
Protection resistors
A controlled shutdown button
Getting ready
How to do it...
How it works...
There's more...
Resetting and rebooting Raspberry Pi
Adding extra functions
The GPIO keypad input
Getting ready
How to do it...
How it works...
There's more...
Generating other key combinations
Emulating mouse events
Multiplexed color LEDs
Getting ready
How to do it...
How it works...
There's more...
Hardware multiplexing
Displaying random patterns
Mixing multiple colors
Writing messages using persistence of vision
Getting ready
How to do it...
How it works...
Sensing and Displaying Real-World Data
Introduction
Using devices with the I2C bus
Getting ready
How to do it...
How it works...
There's more...
Using multiple I2C devices
I2C bus and level shifting
Using just the PCF8591 chip or adding alternative sensors
Reading analog data using an analog-to-digital converter
Getting ready
How to do it...
How it works...
There's more...
Gathering analog data without hardware
Logging and plotting data
Getting ready
How to do it...
How it works...
There's more...
Plotting live data
Scaling and calibrating data
Extending the Raspberry Pi GPIO with an I/O expander
Getting ready
How to do it...
How it works...
There's more...
I/O expander voltages and limits
Using your own I/O expander module
Directly controlling an LCD alphanumeric display
Capturing data in an SQLite database
Getting ready
How to do it...
How it works...
There's more...
The CREATE TABLE command
The INSERT command
The SELECT command
The WHERE command
The UPDATE command
The DELETE command
The DROP command
Viewing data from your own webserver
Getting ready
How to do it...
How it works...
There's more...
Security
Using MySQL instead
Sensing and sending data to online services
Getting ready
How to do it...
How it works...
See also
Building Neural Network Modules for Optical Character Recognition
Introduction
Visualizing optical characters
How to do it...
Building an optical character recognizer using neural networks
How to do it...
How it works...
See also
Applications of an OCR system
Arithmetic Operations Loops and Blinky Lights
Hardware required for this chapter
Arithmetic operations
Bitwise operators in Python
Logical operators
Data types and variables in Python
Reading inputs from the user
The formatted string output
The str.format() method
An exercise for the reader
Another exercise for the reader
Concatenating strings
Loops in Python
A for loop
Indentation
Nested loops
A while loop
Raspberry Pi's GPIO
Blinky lights
Code
The applications of GPIO control
Summary
Conditional Statements Functions and Lists
Conditional statements
An if-else statement
if-elif-else statement
Breaking out of loops
The applications of conditional statements: executing tasks using GPIO
Breaking out a loop by counting button presses
Functions in Python
Passing arguments to a function:
Returning values from a function
The scope of variables in a function
GPIO callback functions
DC motor control in Python
Some mini-project challenges for the reader
Summary
Communication Interfaces
UART – serial port
Raspberry Pi Zero's UART port
Setting up the Raspberry Pi Zero serial port
Example 1 – interfacing a carbon dioxide sensor to the Raspberry Pi
Python code for serial port communication
I2C communication
Example 2 – PiGlow
Installing libraries
Example
Example 3 – Sensorian add-on hardware for the Raspberry Pi
I2C drivers for the lux sensor
Challenge
The SPI interface
Example 4 – writing to external memory chip
Challenge to the reader
Summary
Data Types and Object-Oriented Programming in Python
Lists
Operations that could be performed on a list
Append element to list:
Remove element from list:
Retrieving the index of an element
Popping an element from the list
Counting the instances of an element:
Inserting element at a specific position:
Challenge to the reader
Extending a list
Clearing the elements of a list
Sorting the elements of a list
Reverse the order of elements in list
Create copies of a list
Accessing list elements
Accessing a set of elements within a list
List membership
Let's build a simple game!
Dictionaries
Tuples
Sets
OOP in Python
Revisiting the student ID card example
Class
Adding methods to a class
Doc strings in Python
self
Speaker controller
Light control daemon
Summary
File I/O and Python Utilities
File I/O
Reading from a file
Reading lines
Writing to a file
Appending to a file
seek
Read n bytes
r+
Challenge to the reader
The with keyword
configparser
Challenge to the reader
Reading/writing to CSV files
Writing to CSV files
Reading from CSV files
Python utilities
The os module
Checking a file's existence
Checking for a folder's existence
Deleting files
Killing a process
Monitoring a process
The glob module
Challenge to the reader
The shutil module
The subprocess module
The sys module
Summary
Requests and Web Frameworks
The try/except keywords
try...except...else
try...except...else...finally
Connecting to the Internet – web requests
The application of requests – retrieving weather information
The application of requests – publishing events to the Internet
Flask web framework
Installing Flask
Building our first example
Controlling appliances using the Flask framework
Summary
Awesome Things You Could Develop Using Python
Image processing using a Raspberry Pi Zero
OpenCV
The verification of the installation
A challenge to the reader
Installing the camera to the Raspberry Zero
Speech recognition
Automating routing tasks
Improving daily commute
A challenge to the reader
Project challenge
Improving your vocabulary
A challenge to the reader
Project challenge
Logging
Threading in Python
PEP8 style guide for Python
Verifying PEP8 guidelines
Summary
Robotics 101
The hardware arsenal
Setting up Raspberry Pi
Let's program
Playing with voltage
Summary
Using GPIOs as Input
A deeper dive into GPIOs
Interfacing the PIR sensor
Interfacing the ultrasonic proximity sensor
Interfacing through I2C
Summary
Making a Gardener Robot
Working with solenoids
Making the robot
Making it more intelligent
Making it truly intelligent
Summary
Basics of Motors
The basics
Getting it rolling
Changing the speed
Summary
Bluetooth-Controlled Robotic Car
Basics of the vehicle
Getting the vehicle ready
Controlling the vehicle by Bluetooth
Summary
Sensor Interface for Obstacle Avoidance
Infrared proximity sensor
Autonomous emergency braking
Giving the car self-steering capabilities
Making it fully autonomous
Summary
Making Your Own Area Scanner
Servo motor
Lists
Looking around
LIDAR on an autonomous vehicle
Summary
Basic Switching
Making Jarvis wake you up
Working with relay and PIR sensor
Making the alarm irritating
Making it even more irritating
Summary
Recognizing Humans with Jarvis
Turn on the light Jarvis
Understanding motion
Perfecting motion
Controlling the intensity
Intelligent temperature control
Adding more
Summary
Making Jarvis IoT Enabled
Basics of IoT
The MQTT protocol
Setting up the MQTT broker
Making an IoT-based intrusion detector
Controlling the home
Summary
Giving Voice to Jarvis
Basic installation
Automatic delivery answering machine
Making an interactive door – answering robot
Making Jarvis understand our voice
Summary
Gesture Recognition
Electric field sensing
Using the Flick HAT
Gesture recognition-based automation
Summary
Machine Learning
Making a dataset
Predicting using a dataset
Making your home learn
Home learning and automation
Summary
Making a Robotic Arm
Basics of a robotic arm
Degrees of freedom
Power house
Voltage
Capacity
Power-to-weight ratio
Maximum charge and discharge rate
Chemical composition
Finding the limits
Making the robot safe
Programming multiple frames
Speed control
Summary
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更新时间：2021-07-02 13:02:27