Index

A

• Adafruit / I2C bus and level shifting
• AirPi Air
  • reference / See also
• ampere hours (Ah) / Capacity
• analog-to-digital converters (ADCs)
  • about / Introduction
  • used, for reading analog data / Reading analog data using an analog-to-digital converter, How to do it..., How it works...
• analog data
  • reading, analog-to-digital converter used / Reading analog data using an analog-to-digital converter
  • analog-to-digital converter / How to do it..., How it works...
  • gathering, without hardware / Gathering analog data without hardware
• Analogue / How to do it...
• analogue to digital converter (ADC) / Interfacing through I2C
• arithmetic operations / Arithmetic operations
• arrays / Lists
• Auto-MDIX (Automatic Medium-Dependent Interface Crossover) / Getting ready
• automatic delivery answering machine / Automatic delivery answering machine 
• automating routing tasks / Automating routing tasks
• autonomous driving
  • creating, simple proximity sensor used / Making it fully autonomous
• autonomous emergency braking / Autonomous emergency braking

B

• bag-of-words model
  • building / Building a bag-of-words model, How to do it...
• binary blob / How it works...
• bitwise operators
  • in Python / Bitwise operators in Python
  • reference link / Bitwise operators in Python
  • AND operator / Bitwise operators in Python
  • OR operator / Bitwise operators in Python
  • NOT operator / Bitwise operators in Python
  • XOR operator / Bitwise operators in Python
  • left shift operator / Bitwise operators in Python
  • right shift operator / Bitwise operators in Python
• Blinky lights
  • about / Blinky lights
  • code / Code
• Bonjour Installer
  • reference / There's more...
• built-in Wi-Fi and bluetooth
  • using, on Raspberry Pi / Using built-in Wi-Fi and Bluetooth on Raspberry Pi
  • Wi-Fi network, connecting / Connecting to your Wi-Fi network
  • devices, connecting / Connecting to Bluetooth devices
• button
  • responding to / Responding to a button, How to do it...

C

• CAT6 Ethernet cable
  • used, for connecting via an Ethernet port / Networking and connecting your Raspberry Pi to the internet via an Ethernet port, using a CAT6 Ethernet cable
• chunking
  • used, for dividing text / Dividing text using chunking
• classes / Introduction
• communication interfaces
  • UART serial port / UART – serial port
  • SPI interface / The SPI interface
• commuters
  • improving / Improving daily commute, A challenge to the reader
• compute module / The Raspberry Pi family – a brief history of Pi
• concatenating strings / Concatenating strings
• concatenation / Concatenating strings
• conditional statements
  • about / Conditional statements
  • if-else statement / An if-else statement
  • if-elif-else statement / if-elif-else statement
  • applications tasks executing, GPIO used / The applications of conditional statements: executing tasks using GPIO
  • loop, breaking out by button presses / Breaking out a loop by counting button presses
• constructor / How it works...
• controlled shutdown button
  • about / A controlled shutdown button
  • using / How to do it...
  • working / How it works...
• corners
  • detecting, in images / Detecting corners in images
• cross-validation
  • used, for evaluating accuracy / Evaluating the accuracy using cross-validation
• CSV files / Writing to CSV files
  • reading / Reading from CSV files
  • folder existence, checking / Checking for a folder's existence
  • files, deleting / Deleting files
  • process, killing / Killing a process, The glob module, The shutil module
• current rating
  • about / The basics
  • repetitive maximum current / The basics
  • burst maximum current / The basics
  • continuous maximum current / The basics

D

• data
  • logging / Logging and plotting data, How it works...
  • plotting / Logging and plotting data, How it works...
  • scaling / Scaling and calibrating data
  • calibrating / Scaling and calibrating data
  • capturing, in SQLite database / Capturing data in an SQLite database, How it works...
  • viewing, from webserver / Viewing data from your own webserver, How to do it..., How it works...
• data pre-processing
  • tokenization, using / Pre-processing data using tokenization
• dataset
  • splitting, for training and testing / Splitting the dataset for training and testing, How to do it...
  • creating / Making a dataset
  • used, for prediction / Predicting using a dataset
• data type, list
  • reference link / Lists
• data types
  • in Python / Data types and variables in Python
• degrees of freedom (DOF) / Degrees of freedom
• devices
  • using, with I2C bus / Using devices with the I2C bus, Getting ready, How to do it..., How it works...
• device trees / Getting ready
• dictionaries / Dictionaries
• dilation / Erosion and dilation, How to do it...
• doc string / Doc strings in Python
• double-pole (DP) switch / Getting ready
• Double throw (DT) / Getting ready
• Dynamic Host Configuration Protocol (DHCP) / How to do it...

E

• edge detection
  • reference / See also
• edges
  • detecting, in images / Detecting edges in images, How to do it...
• electric field sensing / Electric field sensing
• erosin / Erosion and dilation, How to do it...
• Exchangeable Image File Format (EXIF) / How it works...

F

• face detector application
  • building / Building a face detector application
• face recognition application
  • building / Building a face recognition application, How it works...
  • reference / How it works...
• face recognition system
  • application / Applications of a face recognition system
• file
  • reading / Reading from a file
  • lines, reading / Reading lines
  • appending / Appending to a file
• file, appending
  • seek / seek
  • n bytes, reading / Read n bytes
  • r+ / r+
• File Allocation Table (FAT) partitions / Accessing the RECOVERY/BOOT partition
• file I/O
  • about / File I/O
  • file, reading / Reading from a file
  • file, writing / Writing to a file
  • file, appending / Appending to a file
  • with keyword / The with keyword
  • configparser / configparser
• flask web framework
  • about / Flask web framework
  • installing / Installing Flask
  • appliances, controlling / Controlling appliances using the Flask framework
• Flick HAT
  • using / Using the Flick HAT
• for loop
  • about / A for loop
  • indentation / Indentation
• formatted string output
  • about / The formatted string output
  • str.format() method / The str.format() method, An exercise for the reader, Another exercise for the reader
• frames per second (FPS) / Programming multiple frames
• Fritzing
  • reference / Getting ready
• function
  • in Python / Functions in Python
  • arguments, passing / Passing arguments to a function:
  • value, returning / Returning values from a function
  • variable scope / The scope of variables in a function
  • GPIO callback functions / GPIO callback functions
• fuze
  • reference / Generating other key combinations

G

• general-purpose input/output (GPIO) / Introduction
• general purpose input/output (GPIO)
  • about / The hardware arsenal, A deeper dive into GPIOs
  • using / Let's program
  • PIR sensor, interfacing / Interfacing the PIR sensor
  • ultrasonic proximity sensor, interfacing / Interfacing the ultrasonic proximity sensor
• gesture recognition-based automation / Gesture recognition-based automation
• global variable / The scope of variables in a function
• GPIO callback functions
  • about / GPIO callback functions
  • DC motor control, in Python / DC motor control in Python
• GPIO keypad input
  • about / The GPIO keypad input
  • installing / Getting ready, How to do it...
  • working / How it works...
  • key combinations, generating / There's more...
• gpiozero library
  • reference link / The applications of conditional statements: executing tasks using GPIO
• graphical application
  • creating / Creating a graphical application – Start menu, How it works..., There's more...
• graphical processing unit (GPU) / The Raspberry Pi family – a brief history of Pi
• graphical user interfaces (GUIs)
  • about / Introduction
  • creating, Tkinter used / Using Tkinter to create graphical user interfaces, How it works...

H

• H-bridge motor driver
  • about / DC motor control in Python
  • reference link / DC motor control in Python
• hardware attached on top (HAT) / Introduction
• hardware multiplexing / Multiplexed color LEDs
• histogram equalization
  • using / Histogram equalization, How to do it…
• home folder
  • sharing, with Server Message Block (SMB) / Sharing the home folder of Raspberry Pi with SMB, How to do it...

I

• I-squared-C (I2C) bus
  • using, with devices / Using devices with the I2C bus, Getting ready, How to do it..., There's more...
  • multiple devices, using / Using multiple I2C devices
  • and level shifting / I2C bus and level shifting
  • PCF8591 chip, using / Using just the PCF8591 chip or adding alternative sensors
• I/O expander
  • used, for extending Raspberry Pi GPIO / Extending the Raspberry Pi GPIO with an I/O expander, How it works...
  • voltages and limits / I/O expander voltages and limits
  • own module, using / Using your own I/O expander module
  • LCD alphanumeric display, direct controlling / Directly controlling an LCD alphanumeric display
• ID EEPROM / The hardware arsenal
• identation, for loop
  • nested loops / Nested loops
• if-elif-else statement
  • about / if-elif-else statement
  • loops, breaking out / Breaking out of loops
• if-else statement / An if-else statement
• IFTTT / Improving daily commute
• image processing
  • using, Raspberry Pi Zero / Image processing using a Raspberry Pi Zero
  • OpenCV / OpenCV
• images
  • displaying / Loading, displaying, and saving images
  • loading / Loading, displaying, and saving images
  • saving / Loading, displaying, and saving images
  • flipping / Image flipping, How to do it...
  • scaling / Image scaling, How to do it...
  • segmentation / Image segmentation, How to do it...
  • blurring / Blurring and sharpening images, How to do it...
  • sharpening / Blurring and sharpening images, How to do it...
  • edges, detecting / Detecting edges in images, How to do it..., How it works...
  • corners, detecting / Detecting corners in images, How to do it...
• Infrared (IR) / Infrared proximity sensor
• infrared proximity sensor / Infrared proximity sensor
• input() function
  • reference link / Reading inputs from the user
• int() function
  • reference link / Reading inputs from the user
• inter-integrated circuit communication / I2C communication
• inter-integrated circuit drivers
  • for lux sensor / I2C drivers for the lux sensor
• Inter-integrated Circuits (I2C)
  • interfacing / Interfacing through I2C
  • about / Interfacing through I2C
  • start condition / Interfacing through I2C
  • address frame / Interfacing through I2C
  • data frame / Interfacing through I2C
  • stop frame / Interfacing through I2C
• interactive door answering robot
  • creating / Making an interactive door – answering robot
• internet
  • connecting, through proxy server / Connecting to the internet through a proxy server, How to do it..., How it works...
• Internet Connection Sharing (ICS) / Networking directly to a laptop or computer
• Internet of Things (IoT)
  • basics / Basics of IoT
  • about / Basics of IoT
• Internet Service Provider (ISP) / Getting ready
• intruder detection system
  • home, controlling / Controlling the home
• IoT-based intrusion detector
  • creating / Making an IoT-based intrusion detector

J

• Jarvis
  • alarm, creating / Making Jarvis wake you up 
  • relay, working / Working with relay and PIR sensor
  • PIR sensor, working / Working with relay and PIR sensor
  • motion detection sensor, adding / Making the alarm irritating, Making it even more irritating
  • home appliances, enhancing / Turn on the light Jarvis
  • motion, enhancing / Understanding motion
  • motion, perfecting / Perfecting motion
  • basic installation / Basic installation
  • creating, to access voice / Making Jarvis understand our voice
  • home, creating / Making your home learn
  • home, learning / Home learning and automation
  • automation / Home learning and automation
• Joint Test Action Group (JTAG) / Secondary hardware connections

K

• K-30 carbon dioxide sensor
  • interfacing, to Raspberry Pi / Example 1 – interfacing a carbon dioxide sensor to the Raspberry Pi
• key combinations
  • mouse events, emulating / Emulating mouse events
• key specifications, motors
  • voltage rating / The basics
  • current rating / The basics
  • supply voltage / The basics
  • logic supply voltage / The basics

L

• latched push-button switch / Getting ready
• least significant bit (LSB) / How it works...
• LED
  • controlling / Controlling an LED, Getting ready, How it works..., There's more...
  • GPIO current, controlling / Controlling the GPIO current
• light-emitting diodes (LEDs) / Introduction
• Light Detection and Ranging (LIDAR)
  • using / Looking around 
  • about / Looking around 
  • on autonomous vehicle / LIDAR on an autonomous vehicle 
• Linux Reader
  • reference / Accessing the RECOVERY/BOOT partition
• list
  • about / Lists
  • operations / Operations that could be performed on a list
  • building / Let's build a simple game!
• list elements, operations
  • set of elements, accessing / Accessing a set of elements within a list
• lists / Lists
• live data
  • plotting / Plotting live data
• local variables / The scope of variables in a function
• logging / Logging
• logical operators
  • about / Logical operators
  • EQUAL operator / Logical operators
  • NOT EQUAL, operator / Logical operators
  • GREATER THAN operator / Logical operators
  • LESS THAN operator / Logical operators
  • GREATER THAN OR EQUAL TO operator / Logical operators
  • LESS THAN OR EQUAL TO operator / Logical operators
• logistic regression
  • reference / How to do it...
• logistic regression classifier
  • using / Logistic regression classifier
• loops
  • in Python / Loops in Python
  • for loop / A for loop
• loops, Python
  • for loop / A for loop
  • while loop / A while loop

M

• machine code assembler / Why Python?
• manual network configuration
  • about / Configuring your network manually
  • steps / How to do it...
• Message Queuing Telemetry Transport (MQTT) protocol / The MQTT protocol
• messages
  • writing, persistence of vision (POV) used / Writing messages using persistence of vision, How to do it..., How it works...
• Midori / How to do it...
• milliampere hour (mAh) / Capacity
• mini-project
  • challenges / Some mini-project challenges for the reader
• momentary close / Getting ready
• most significant bit (MSB) / How it works...
• motion, Jarvis
  • intensity, controlling / Controlling the intensity
  • temperature control / Intelligent temperature control
  • multiplexer functionality, adding / Adding more 
• motors
  • basics / The basics
  • implementing / Getting it rolling
  • speed, changing / Changing the speed 
• multiple frames
  • programming / Programming multiple frames
• multiplexed color LEDs
  • using / Getting ready, How to do it...
  • working / How it works...
  • hardware multiplexing / Hardware multiplexing
  • random patterns, displaying / Displaying random patterns
  • multiple colors, mixing / Mixing multiple colors

N

• Naive Bayes classifier
  • building / Building a Naive Bayes classifier, See also
  • reference / See also
• neural networks
  • used, for building optical character recognizer / Building an optical character recognizer using neural networks, How it works...
• New Out Of Box System (NOOBS)
  • about / Getting ready
  • used, for setting up Raspberry Pi SD card / Using NOOBS to set up your Raspberry Pi SD card, How to do it..., There's more...
  • reference / Getting ready

O

• Object-Orientated Design (OOD) / There's more...
• object-oriented programming (OOP)
  • about / The applications of conditional statements: executing tasks using GPIO, OOP in Python
  • in Python / OOP in Python
  • example / Revisiting the student ID card example
  • class / Class
  • methods, adding to class / Adding methods to a class
  • doc strings, in Python / Doc strings in Python
  • self / self
• OCR system
  • applications / Applications of an OCR system
• on-the-go (OTG) / The Raspberry Pi family – a brief history of Pi
• online services
  • data, sensing / Sensing and sending data to online services, How to do it...
  • data, sending / Sensing and sending data to online services, How to do it...
  • working / How it works...
• OpenCV
  • about / OpenCV
  • URL, for installation / OpenCV
  • installation, verifying / The verification of the installation
• operations, list
  • element, appending / Append element to list:
  • element, removing / Remove element from list:
  • index element, retrieving / Retrieving the index of an element
  • element, popping / Popping an element from the list
  • element instances, counting / Counting the instances of an element:
  • element, inserting / Inserting element at a specific position:
  • extending / Extending a list
  • elements, clearing / Clearing the elements of a list
  • elements, sorting / Sorting the elements of a list
  • elements, reversing / Reverse the order of elements in list
  • copies, creating / Create copies of a list
  • list elements, accessing / Accessing list elements
  • list membership / List membership
• optical character recognizer
  • building, neural networks used / Building an optical character recognizer using neural networks, How it works...
• optical characters
  • visualizing / Visualizing optical characters, How to do it...
• options, for reading lines
  • readline() / Reading lines
  • readlines() / Reading lines

P

• pattern identification, text
  • topic modeling, using / Identifying patterns in text using topic modeling, How to do it...
• PCF8591 chip
  • reference / Using just the PCF8591 chip or adding alternative sensors
• PEP8 style guide
  • for Python / PEP8 style guide for Python
  • about / PEP8 style guide for Python
  • verifying / Verifying PEP8 guidelines
• persistence of vision (POV)
  • used, for writing messages / Writing messages using persistence of vision, How to do it..., How it works...
• phase fired control / Controlling the intensity
• photo information
  • displaying, in application / Displaying photo information in an application, How it works..., There's more...
• photos
  • organizing / Organizing your photos automatically, How it works...
• PHP MySQL
  • reference / Using MySQL instead
• Pi-Kitchen project
  • reference / There's more...
• PiGlow / Example 2 – PiGlow
• Pillow / Getting ready
• PINN Is Not NOOBS (PINN) / There's more...
• PIR sensor
  • interfacing / Interfacing the PIR sensor
• Portable Pixmap Format (PPM) / How it works...
• potentiometer / Servo motor
• PowerSwitch Tail II
  • about / The applications of GPIO control
  • reference link / The applications of GPIO control
• power unit
  • about / Power house
  • voltage / Voltage
  • capacity / Capacity
  • maximum charge / Maximum charge and discharge rate
  • discharge rate / Maximum charge and discharge rate
  • chemical composition / Chemical composition
• protection resistors / Protection resistors
• proxy server
  • internet, connecting to / Connecting to the internet through a proxy server, There's more...
• pull-down resistor circuits / Pull-up and pull-down resistor circuits
• pull-up resistor circuits / Pull-up and pull-down resistor circuits
• pulse width modulation (PWM) / Playing with voltage, Interfacing through I2C, The basics, Servo motor
• PuTTY
  • reference / How to do it...
• PyMySQL
  • reference / Using MySQL instead
• pyplot
  • reference / Logging and plotting data
• Python
  • bitwise operators in / Bitwise operators in Python
  • data types in / Data types and variables in Python
  • loops in / Loops in Python
  • function / Functions in Python
  • DC motor control in / DC motor control in Python
  • threading / Threading in Python
• Python-uinput
  • reference / The GPIO keypad input
• python3-gpiozero library
  • reference link / Code
• Python dictionary / How to do it...
• Python Image Library (PIL) / Getting ready
• python package manager (pip) / Getting ready
• Python Software Foundation / Python 2 and Python 3

Q

• queue connection / Controlling the vehicle by Bluetooth

R

• range() function
  • reference link / A for loop
• Raspberry Pi
  • about /
  • Python, using / Why Python?
  • Python 2 / Python 2 and Python 3
  • Python 3 / Python 2 and Python 3
  • Python version, selecting /
  • overview / The Raspberry Pi family – a brief history of Pi
  • Model B / The Raspberry Pi family – a brief history of Pi
  • Model A / The Raspberry Pi family – a brief history of Pi
  • Pi Zero / The Raspberry Pi family – a brief history of Pi
  • reference / The Raspberry Pi family – a brief history of Pi
  • selecting / Which Pi to choose?
  • connecting to / Connecting to Raspberry Pi, How to do it..., There's more...
  • display, HDMI / How to do it...
  • analogue / How to do it...
  • Direct Display DSI / How to do it...
  • stereo analogue audio / How to do it...
  • network / How to do it...
  • Onboard Wi-Fi and Bluetooth / How to do it...
  • USB / How to do it...
  • micro USB power / How to do it...
  • secondary hardware connections / Secondary hardware connections
  • networking, to internet via Ethernet port using CAT6 Ethernet cable / Networking and connecting your Raspberry Pi to the internet via an Ethernet port, using a CAT6 Ethernet cable
  • connecting, to internet via Ethernet port using CAT6 Ethernet cable / Networking and connecting your Raspberry Pi to the internet via an Ethernet port, using a CAT6 Ethernet cable
  • built-in Wi-Fi and bluetooth, using / Using built-in Wi-Fi and Bluetooth on Raspberry Pi
  • connecting, to internet via USB Wi-Fi dongle / Networking and connecting your Raspberry Pi to the internet via aUSB Wi-Fi dongle, How to do it..., There's more...
  • USB wired network adapters, using / Using USB wired network adapters
  • remote connection, over network using VNC / Connecting remotely to Raspberry Pi over the network using VNC, There's more...
  • remote connection, over network using SSH (and X11 forwarding / Connecting remotely to Raspberry Pi over the network using SSH (and X11 forwarding), How to do it..., How it works...
  • updating / Keeping Raspberry Pi up to date, There's more...
  • hardware interface / Introduction
  • speaker or headphone, using / Trying a speaker or headphone with Raspberry Pi
  • rebooting / Resetting and rebooting Raspberry Pi
  • resetting / Resetting and rebooting Raspberry Pi
  • extra functions, adding / Adding extra functions
  • K-30 carbon dioxide sensor, interfacing to / Example 1 – interfacing a carbon dioxide sensor to the Raspberry Pi
  • setting up / Setting up Raspberry Pi
  • used, as switch / Playing with voltage
• Raspberry Pi's GPIO
  • hardware requisites / Hardware required for this chapter
  • about / Raspberry Pi's GPIO
  • Blinky lights / Blinky lights
  • applications / The applications of GPIO control
• Raspberry Pi GPIO
  • extending, with I//O expander / Extending the Raspberry Pi GPIO with an I/O expander, How it works...
• Raspberry Pi LAN port
  • connecting, directly to laptop or computer / Networking directly to a laptop or computer, Getting ready, How to do it..., How it works..., Direct network link
  • direct network link / Direct network link
• Raspberry Pi operating system image
  • reference link / Setting up Raspberry Pi
• Raspberry Pi Zero
  • used, for image processing / Image processing using a Raspberry Pi Zero
  • camera, installing / Installing the camera to the Raspberry Zero
• Raspberry Pi Zero serial port
  • setting up / Raspberry Pi Zero's UART port
• Raspbian
  • reference / Preparing an SD card manually
• Raspbian Jessie OS image / Code
• red, blue, and green (RGB) / Controlling an LED
• REpresentational State Transfer (REST) / Sensing and sending data to online services
• requisites, manual network configuration
  • IPv4 address / Getting ready
  • subnet mask / Getting ready
  • default gateway address / Getting ready
  • Domain Name Service (DNS) server / Getting ready
• RGB LED module
  • reference / Getting ready
• robot
  • hardware requisites / The hardware arsenal
  • creating / Making the robot
  • performance, improving / Making it more intelligent, Making it truly intelligent
  • safety, creating / Making the robot safe
• robotic arm
  • basics / Basics of a robotic arm
• robotic arm kit
  • limits, finding / Finding the limits
  • speed control / Speed control
• robotic vehicle
  • basics / Basics of the vehicle
  • components, assembling / Getting the vehicle ready
  • controlling, by Bluetooth / Controlling the vehicle by Bluetooth

S

• safe voltages / Safe voltages
• SD card, setting up
  • NOOBS, using / Using NOOBS to set up your Raspberry Pi SD card
  • default user password, changing / Changing the default user password
  • data corruption, avoiding / Ensuring that you shut down safely
  • manual preparation / Preparing an SD card manually
  • system, expanding / Expanding the system to fit in your SD card
  • RECOVERY/BOOT partition, accessing / Accessing the RECOVERY/BOOT partition
  • tools, used for backup / Using the tools to back up your SD card in case of failure
• self-steering capabilities / Giving the car self-steering capabilities
• Sensorian / Example 3 – Sensorian add-on hardware for the Raspberry Pi
• sentence sentiment
  • analyzing / Analyzing the sentiment of a sentence
• sentiment analysis
  • reference / How to do it...
  • applications / Applications of sentiment analysis
• Serial Clock (SCL) / Interfacing through I2C
• Serial Data (SDA) / Interfacing through I2C
• Serial Peripheral Interface (SPI) / The SPI interface
• Server Message Block (SMB)
  • used, for sharing home folder / Sharing the home folder of Raspberry Pi with SMB, How to do it...
• service set identifier (SSID) / Getting ready
• servo motor / Servo motor
• sets / Sets
• several motor driver kits
  • reference link / DC motor control in Python
• simple proximity sensor
  • used, for creating autonomous driving / Making it fully autonomous
• single-pole, single-throw (SPST) / Getting ready
• Single throw (ST) / Getting ready
• Slack API
  • reference link / The application of requests – publishing events to the Internet
• solenoids
  • working / Working with solenoids
  • features / Working with solenoids
• speaker controller
  • about / Speaker controller
  • light control daemon / Light control daemon
• speech recognition / Speech recognition
• SPI interface
  • about / The SPI interface
  • external memory chip, writing to / Example 4 – writing to external memory chip
• SQLite database
  • data, capturing / Capturing data in an SQLite database, How it works...
  • CREATE command / The CREATE TABLE command
  • INSERT command / The INSERT command
  • SELECT command / The SELECT command
  • WHERE command / The WHERE command
  • UPDATE command / The UPDATE command
  • DELETE command / The DELETE command
  • DROP command / The DROP command
• SSH (and X11 forwarding)
  • used, for establishing remote connection to Raspberry Pi / Connecting remotely to Raspberry Pi over the network using SSH (and X11 forwarding), How to do it..., How it works...
• Static IP DHCP address / There's more...
• Structured Query Language (SQL) / Capturing data in an SQLite database

T

• term frequency-inverse document frequency (tf-idf) / Building a text classifier
• text
  • dividing, chunking used / Dividing text using chunking, How to do it...
• text classifiers
  • building / Building a text classifier, How it works...
  • applications / Applications of text classifiers
• text data
  • stemming / Stemming text data
• Tkinter
  • about / Introduction
  • used, for creating graphical user interfaces / Using Tkinter to create graphical user interfaces
  • graphical user interfaces / How it works...
• tokenization
  • used, for pre-processing data / Pre-processing data using tokenization
• topic modeling
  • used, for pattern identification in text / Identifying patterns in text using topic modeling, How to do it...
• triangulation / Infrared proximity sensor
• try/except keywords
  • about / The try/except keywords
  • try-except-else block / try...except...else
  • try-except-else-finally block / try...except...else...finally
• tuple / Tuples

U

• ultrasonic proximity sensor
  • interfacing / Interfacing the ultrasonic proximity sensor
• Universal Asynchronous Receiver Transmitter (UART) / UART – serial port
  • Raspberry Pi zero port / Raspberry Pi Zero's UART port
  • Raspberry Pi Zero serial port, setting up / Setting up the Raspberry Pi Zero serial port
  • carbon dioxide sensor, interfacing to Raspberry Pi / Example 1 – interfacing a carbon dioxide sensor to the Raspberry Pi
  • Python code, for serial port communication / Python code for serial port communication
  • inter-integrated circuit communication / I2C communication
  • PiGlow / Example 2 – PiGlow
  • libraries, installing / Installing libraries
  • Sensorian add-on hardware, for Raspberry Pi / Example 3 – Sensorian add-on hardware for the Raspberry Pi
• USB Wi-Fi dongle
  • used, for connecting Raspberry Pi / Networking and connecting your Raspberry Pi to the internet via aUSB Wi-Fi dongle, How to do it..., There's more...
• user inputs
  • reading / Reading inputs from the user
  • formatted string output / The formatted string output
  • concatenating strings / Concatenating strings

V

• variables / Data types and variables in Python
  • in Python / Data types and variables in Python
• VNC Viewer
  • used, for connecting remotely to Raspberry Pi / Connecting remotely to Raspberry Pi over the network using VNC, There's more...
  • reference / How to do it...
• vocabulary
  • improving / Improving your vocabulary

W

• web requests
  • weather information, retrieving / The application of requests – retrieving weather information
  • events, publishing to internet / The application of requests – publishing events to the Internet
• webserver
  • data, viewing / Viewing data from your own webserver, How to do it..., How it works...
  • security / Security
  • MySQL instead, using / Using MySQL instead
• Wheatstone bridge / Using just the PCF8591 chip or adding alternative sensors
• Wi-Fi adapters
  • reference / Getting ready
• widgets / Introduction
• Win32 Disk Imager / Using the tools to back up your SD card in case of failure

X

• X11 forwarding
  • used, for executing multiple programs / Running multiple programs with X11 forwarding
  • desktop, executing through / Running as a desktop with X11 forwarding
  • used, for Tkinter execution / Running Pygame and Tkinter with X11 forwarding
  • used, for Pygame execution / Running Pygame and Tkinter with X11 forwarding
  • about / Getting ready
• Xively
  • reference / Getting ready
• xively-python library
  • reference / Sensing and sending data to online services
• Xming
  • reference / How to do it...
• X server / Getting ready

Y

• Yaw Pitch and Roll (YPR) / Basics of a robotic arm