Python Programming With Raspberry Pi by Yamanoor, Sai -- Read -- Imperial Library of Trantor

Index

Credits About the Authors About the Reviewer www.PacktPub.com Customer Feedback Preface

What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support

Downloading the example code Downloading the color images of this book Errata Piracy Questions

Getting Started with Python and the Raspberry Pi Zero

Let's get started!

Things needed for this book

Buying the Raspberry Pi Zero

Introduction to the Raspberry Pi Zero

The features of the Raspberry Pi Zero

The setup of the Raspberry Pi Zero

Soldering the GPIO headers

Enclosure for the Raspberry Pi Zero

OS setup for the Raspberry Pi

micro SD card preparation

Let's learn Python! The Hello World example

Setting up your Raspberry Pi Zero for Python programming

IDLE's interactive tool The text editor approach Launching the Python interpreter via the Linux Terminal Executing Python scripts using the Linux Terminal The print() function The help() function

Summary

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

Lets Build a Robot!

Components of the robot Setting up remote login

Changing the password Enabling SSH access

Chassis setup

Motor driver and motor selection

Preparing the motor driver circuit Raspberry Pi Zero and motor driver assembly

Raspberry Pi Zero and motor driver assembly Robot Power supply setup Setting up the motor power supply

Using the Raspberry Pi Zero's 5V power supply Using an external power supply

Testing the motors

Motor driver detection Detecting motor driver

Motor test

Dependencies

Camera setup

Verification of camera function

The web interface Camera setup for the web interface Buttons for robot control Troubleshooting tips Project enhancements Summary

Home Automation Using the Raspberry Pi Zero

Voice activated personal assistant

Installing requisite packages How does it work? Setting up the audio tools

Connecting the speaker

Connecting the microphone Houndify Building voice commands

Adding a button

Web framework based appliance control/dashboard

Building the web dashboard

Personal Health Improvement — Sitting is the new smoking

Installing requisite software packages

Getting access keys for Fitbit client

Fitbit API Test

Building the visual aid

Smart lawn sprinkler Summary

Tips and Tricks

Change your Raspberry Pi's password

Updating your OS

Setting up your development environment

SSH access via Windows SSH access via Linux/macOS Transferring files to/from your Pi

WinSCP Mac/Linux environment

Git Command-line text editors Graphical text editors SSH aliases (on Mac/Linux Terminals) Saving SSH sessions on PuTTY

VNC access to Raspberry Pi

The RUN switch of the Raspberry Pi Zero board GPIO pin mapping

Stackable breadboard

Summary

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