Arduino Playground.pdf

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e a r ly a c c e S S p r o g r a m :
Feedback welcome!
Welcome to the Early Access edition of the as yet unpublished
Arduino
Playground
by Warren Andrews! As a prepublication title, this book may
be incomplete and some chapters may not have been proofread.
Our goal is always to make the best books possible, and we look forward
to hearing your thoughts. If you have any comments or questions, email us
at
earlyaccess@nostarch.com.
If you have specific feedback for us, please
include the page number, book title, and edition date in your note, and
we’ll be sure to review it. We appreciate your help and support!
We’ll email you as new chapters become available. In the meantime,
enjoy!
a r d u i N o p l ayg r o u N d
warreN aNdre wS
Early Access edition, 9/8/16
Copyright © 2016 by Warren Andrews.
ISBN-10: 1-59327-744-X
ISBN-13: 978-1-59327-744-4
Publisher: William Pollock
Production Editor: Laurel Chun
Cover Illustration: Josh Ellingson
Developmental Editor: Jennifer Griffith-Delgado
Technical Reviewer: Scott Collier
Copyeditor: Julie Jigour
No Starch Press and the No Starch Press logo are registered trademarks of No Starch Press,
Inc. Other product and company names mentioned herein may be the trademarks of their
respective owners. Rather than use a trademark symbol with every occurrence of a trade-
marked name, we are using the names only in an editorial fashion and to the benefit of the
trademark owner, with no intention of infringement of the trademark.
All rights reserved. No part of this work may be reproduced or transmitted in any form or by
any means, electronic or mechanical, including photocopying, recording, or by any informa-
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and the publisher.
The information in this book is distributed on an “As Is” basis, without warranty. While every
precaution has been taken in the preparation of this work, neither the author nor No Starch
Press, Inc. shall have any liability to any person or entity with respect to any loss or damage
caused or alleged to be caused directly or indirectly by the information contained in it.
Brief Contents
Chapter 1: The Reaction-Time Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 2: An Automated Agitator for PCB Etching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 3: The Regulated Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 4: A Watch Winder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Chapter 5: The Garage Sentry Parking Assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Chapter 6: The Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Chapter 7: A Custom pH Meter
Chapter 8: The Ballistic Chronograph
Chapter 9: The Square Wave Generator
Chapter 10: The Rainbow Thermometer
Appendix
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