Raspberry Pi For Dummies - Sean McManus

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      Raspberry Pi computers are at the forefront of the maker movement, where people make their own inventions using a mixture of traditional craft skills and modern coding and electronics knowledge. They’ve also given more and more people access to a computer that provides a gateway into programming, electronics, and the world of Linux — the technically powerful (and free) rival to Windows and Mac OS. As a supercheap computer, the Raspberry Pi is also being pressed into service in media centers and as a family computer for games, music, photo editing, and word processing.

      You might be a geek who relishes learning new technologies, or you might be someone who wants a new family computer to use with the children. In either case, Raspberry Pi For Dummies, 4th Edition, helps you get started with your Raspberry Pi and teaches you about some of the many fun and inspiring things you can do with it.

      Raspberry Pi For Dummies, 4th Edition, provides a concise and clear introduction to the terminology, technology, and techniques that you need to get the most from your Pi. With this book as your guide, you’ll learn how to

       Set up your Raspberry Pi.

       Discover and install great free software you can use on your Raspberry Pi.

       Use the desktop environment to run programs, manage files, surf the web, and view photos.

       Use the Linux command line to manage your Raspberry Pi and its files.

       Use the Raspberry Pi as a productivity tool.

       Edit photos.

       Play music and video.

       Create animations and arcade games with the child-friendly Scratch programming language.

       Write your own games and other programs using the Python programming language.

       Compose music by programming with Sonic Pi.

       Get started with electronics, from an introduction to soldering to the design and creation of electronic projects controlled by the Raspberry Pi.

      Incidentally, within this book, you may note that some web addresses break across two lines of text. If you’re reading this book in print and want to visit one of these web pages, simply key in the web address exactly as it’s noted in the text, pretending as though the line break doesn’t exist. If you’re reading this as an ebook, you’ve got it easy — just click or tap the web address to be taken directly to the web page.

      Raspberry Pi For Dummies, 4th Edition, is written for beginners, by which we mean people who have never used a similar computer. However, we do have to make a few assumptions in writing this book, because we wouldn’t have enough space for all its cool projects if we had to start by explaining what a mouse is! Here are our assumptions:

       You are familiar with other computers, such as Windows or Apple computers. In particular, we assume that you’re familiar with using windows, icons, and the keyboard and mouse, and that you know the basics of using your computer for things like browsing the Internet, installing software, or copying files.

       The Raspberry Pi is not your only computer. At times, you’ll need to have access to another computer — for example, to create your SD or microSD card for the Pi. (See Chapter 2.) When it comes to networking, we assume you already have a router set up with an Internet connection and a spare port that you can plug the Raspberry Pi into if you’re using a wired connection.

       The Raspberry Pi is your first Linux-based computer. If you’re a Linux ninja, this book still gives you a solid reference on the Raspberry Pi and the version of Linux it uses, but no prior Linux knowledge is required.

       You share our excitement. The Raspberry Pi can open up a world of possibilities to you!

      If you’ve read other For Dummies books, you know that they use icons in the margin to call attention to particularly important or useful ideas in the text. In this book, we use four such icons:

      

The Tip icon highlights expert shortcuts or simple ideas that can make life easier for you.

      

Although we’d like to think that reading this book is an unforgettable experience, we’ve highlighted some points that you might want to particularly commit to memory. They’re either important takeaways, or they’re fundamental to the project you’re working on.

      

As you would do on the road, slow down when you see a Warning icon. It highlights an area where things could go wrong.

      

Arguably, the whole book talks about technical stuff, but this icon highlights something that’s particularly technical. We’ve tried to avoid unnecessary jargon and complexity, but some background information can give you a better understanding of what you’re doing, and sometimes we do need to get quite techy, given the sophistication of the projects you’re doing. Paragraphs highlighted with this icon might be worth rereading, to make sure you understand, or you might decide that you don’t need to know that much detail. It’s up to you!

      In addition to what you’re reading right now, this book comes with a free access-anywhere Cheat Sheet with tips on installing software and using Scratch. To get this Cheat Sheet, simply go to www.dummies.com and type Raspberry Pi Dummies Cheat Sheet in the Search box.

      Both of us maintain our own personal websites too, which contain some additional information on the Raspberry Pi. Mike’s is at www.thebox.myzen.co.uk/Raspberry/Punnet.html, and Sean’s is at www.sean.co.uk.

      It’s up to you how you read this book. It’s been organized to take you on a journey from acquiring and setting up your Raspberry Pi to learning the software that comes with it, and from writing your own programs to finally creating your own electronics projects. Some chapters build on knowledge gained in earlier chapters, especially the sections on Scratch and Python — and all of Part 5.

      We understand, though, that some projects or topics might interest you more than others, and you might need help in some areas right now. When a chapter assumes knowledge from elsewhere,

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