To get the most out of this book

There is no need of prior Python knowledge though having a prior experience will accelerate your learning curve. Readers will have to download and install RASPBIAN STRETCH WITH DESKTOP; this will give us the GUI interface for Raspberry Pi.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the on-screen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Python-Robotics-Projects. In case, there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it from https://www.packtpub.com/sites/default/files/downloads/PythonRoboticsProjects_ColorImages.pdf.

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "We have to multiply 2 and 3 we simply write Multiply(2,3)."

A block of code is set as follows:

import RPi.GPIO as GPIO
from time import sleep 
GPIO.setmode(GPIO.BOARD) 
GPIO.setup(23,GPIO.OUT) 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

import RPi.GPIO as GPIO
from time import sleep 
GPIO.setmode(GPIO.BOARD) 
GPIO.setup(23,GPIO.OUT) 

Any command-line input or output is written as follows:

sudo apt-get update
sudo apt-get upgrade

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Then select I2C to enable it. Then select Yes."

Warnings or important notes appear like this.

Tips and tricks appear like this.