RaspermyUser guideRaspberryUser guide4th editionEben Upton and Gareth HalfacreeWILEYThis edition first published 2016a 2016 Eben Upton and Gareth HalfacreeJohn wiley Sons Ltd. The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdomglobal editorial offices, for customer services and for information about how to apply for permission toreusethecopyrightmaterialinthisbookpleaseseeourwebsiteatwww.wiley.comThe right of the authors to be identified as the authors of this work has been asserted in accordance with the Copyright,Designs and Patents Act 1988All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any formor by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted by the Uk Copyright,ns and Patents Act 1988, without the prior permission of the publiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available inelectronic booksDesignations used by companies to distinguish their products are often claimed as trademarks. All brand names andproduct names used in this book are trade names, service marks, trademarks or registered trademarks of their respectiveowners. The publisher is not associated with any product or vendor mentioned in this book. This publication is designed toprovide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding thatthe publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required,he services of a competent professional should be soughtLibrary of Congress Control Number: 2016946656Trademarks: Wiley and the Wiley logo are trademarks or registered trademarks of John Wiley Sons, Inc and/or itsaffiliates in the United States and/or other countries, and may not be used without written permission. Raspberry pi andthe Raspberry Pi logo are registered trademarks of the Raspberry Pi Foundation. All other trademarks are the property oftheir respective owners. John Wiley Sons, Ltd. is not associated with any product or vendor mentioned in the bookGoogle Drive is a registered trademark of googleA catalogue record for this book is available from the British LibraryISBN978-1-11926436-1(Pbk);ISBN978-1-119264385(ePDF);ISBN978-1-11992437-8(epub)Set in 10 pt. Chaparral Pro by Indianapolis Composition ServicesPrinted simultaneously in Great Britain and the United StatesPublisher's acknowledgementsSome of the people who helped bring this book to market include the followingEditorial and productionMarketingVP-Professional Technology StrategyMarketing ManagerBarry PruettLorna meinAssociate director -Book ContentAssociate Marketing ManagerManagementCarrie sherrillMartin tribeExecutive Commissioning EditorJody LefevereProject EditorJohn SleeveTechnical editorAndrew schellerManager of Content Developmentand AssemblyMary Beth WakefieldEditorial assistantMatthew loweAbout the authorsEBEN UPTON is a founder and trustee of the Raspberry Pi Foundation, and serves as itsExecutive Director. He is responsible for the overall software and hardware architecture ofthe raspberry pi, and for the Foundations relationships with its key suppliers and customers In an earlier life, he founded two successful mobile games and middleware companiesIdeaworks 3d Ltd and Podfun Ltd, and held the post of Director of Studies for ComputerScience at St John,s College, Cambridge. He holds a BA, a PhD, and an MBa from theUniversity of CambridgeIn his day job, Eben works for Broadcom as an asic architect and general troublemakerGareTH hALFAcrEe is a freelance technology journalist and the co-author of theRaspberry Pi User guide alongside project co-founder Eben Upton. Formerly a system administrator working in the education sector, Gareth's passion for open source projects has followed him from one career to another, and he can often be seen reviewing, documenting,oreven contributing to projects including GNU/Linux, LibreOffice, Fritzing, and arduino. He isalso the creator of the Sleepduino and burnduino open hardware projects, which extend thecapabilities of the Arduino electronics prototyping system. A summary of his current workcanbefoundathttp://freelance.halfacree.co.uk