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SERVO MAGAZINE R2D2 BUILDERS CLUB • SERVO BUDDY • Irobot LOOJ • R Full Page.Qxd 3/5/2008 4:10 PM Page 2 Cover.qxd 4/9/2008 5:29 PM Page 1 Vol. 6 No. 5 SERVO MAGAZINE R2D2 BUILDERS CLUB • SERVO BUDDY • iROBOT LOOJ • R Full Page.qxd 3/5/2008 4:10 PM Page 2 Let your geek shine. Meet Leah Buechley, developer of LilyPad—a sew-able microcontroller—and fellow geek. Leah used SparkFun products and services while she developed her LilyPad prototype. The tools are out there, from LEDs to conductive thread, tutorials to affordable PCB fabrication, and of course Leah’s LilyPad. Find the resources you need to let your geek shine too. »Sharing Ingenuity SPAR K FUN.COM ©2008 SparkFun Electronics, Inc. All rights reserved. Full Page.qxd 3/5/2008 4:19 PM Page 3 HitecHitec Goes Goes TheThe Distance! Distance! Don’t let your robot take a fall, make sure it can go the distance by using one of Hitec’s high powered robotics servos. From the sportpppgq level HSR-8498HB to the stumppp pulling g torque q of the Titanium gearedg, HSR-5990TG, Hitec has a servo for your robotics projectproject.p t. +65+% +656* +656* +657* +65&5 +LJK7RUTXH +LJK7RUTXH &RUHOHVV&RUHOHVV0HJD7RUTXH 0HJ &RUHOHVV&&RUHOHVV0HJD7RUTXHV0HJ 1RQ3URSRUWLRQDO .DUERQLWH*HDU 6WHHO*HDU 6WHHO*HDU 7LWDQLXP*HDU &RQWLQXRXV5RWDWLRQ Model Gear Type Torque(oz) Speed(sec) Bearing Dimensions Weight Protocol 6V / 7.4V 6V / 7.4V L” x W” x H” (oz) HSR-8498HB ........ Karbonite.......... 103 / na ........... 0.20 / na.......... Dual BB........ 1.57 x .78 x 1.45........1.75 ...... *HMI/PWN HSR-5498SG ............ Steel............. 153 / 188 ......... 0.22 / 0.19 ........ Dual BB........ 1.57 x .78 x 1.45........2.10....... *HMI/PWN HSR-5980SG ............ Steel............. 333 / 417 ......... 0.17 / 0.14......... Dual BB........ 1.57 x .78 x 1.45........2.36 ...... *HMI/PWN HSR-5990TG.......... Titanium.......... 333 / 417 ......... 0.17 / 0.14......... Dual BB........ 1.57 x .78 x 1.45........2.39 ...... *HMI/PWN HSR-1425CR .............Nylon .............. na / 57..............16 rpm........... Dual BB........ 1.59 x .77 x 1.44.........1.6 ............PWM *HMI Is Hitec’s Multi Protocol Interface which allows the programming of our servos via a PC using the optional interface kit (Part No. 78206) PWM is the standard R/C protocol and allows the programming of the JOIN US AT April 25-27, 2008 robotics servos using the HFP-20 field programmer (Part No. 44430). University of Phoenix Stadium Glendale Arizona Visit EFExpo.com For Details 12115 Paine Street . Poway CA 92064 . 858-748-6948 Check out the RoboNova-1 and all the other Hitec Robotics products at www.hitecrobotics.comwww.hitecrobotics.com <http://www.hitecrobotics.com> TOC May08.qxd 4/9/2008 10:23 PM Page 4 Columns PAGE 73 08 Robytes by Jeff Eckert Stimulating Robot Tidbits 10 GeerHead by David Geer The Northern Bites RoboCup Team 14 Ask Mr. Roboto by Dennis Clark Your Problems Solved Here 68 Different Bits by Heather Dewey-Hagborg Artificial Life — Part 2: Genetic Algorithms: Hello World 73 Twin Tweaks by Bryce and Evan Woolley Geekings from France — the POB bot 84 Robotics Resources by Gordon McComb Departments Robot Builder’s Bookshelf Redux 06 Mind/Iron 92 Appetizer 17 Robo-Links by Robin Lemieux 18 New Products Building Character through ... Robot Building! 80 Robotics Showcase 94 Then and Now by Tom Carroll 82 Events Calendar Robot Muscles — Electric Motors 89 SERVO Webstore 97 Advertiser’s Index This Month In THE COMBAT ZONE ... Features 20 Vapor Bot Build Events 22 Results and Upcoming Competitions 23 EVENT REPORT: WAR in Seattle Robot Profile 25 Sewer Snake PAGE 10 4 SERVO 05.2008 TOC May08.qxd 4/9/2008 2:59 PM Page 5 05.2008 VOL. 6 NO. 5 Features & Projects PAGE 28 28 Tear Down: The iRobot Looj by Bryan Bergeron Get inside the latest offering from iRobot and explore its potential as a robotics platform. 32 The Servo Buddy by Jim Stewart An introduction to servo motor construction and operation, and a description of an inexpensive circuit to control a servo without a microcontroller. 36 Designing and Building a Robot From Scratch PAGE 36 by Brian Benson Part 3 covers common tools and techniques that will make the actual build process easier. 42 The R2 Builders Club by K. Stiles Howard In a galaxy right here at home, a unique community of roboteers build R2-D2 replicas not just for fun, but for very worthy causes. 50 Managing Your Mobile Monkey by Fred Eady Discover how to add 2GB of direct access storage to your robot with just a PIC and a micro-SD memory card. 58 Reviving an Androbot BOB by Robert Doerr Extra sensors, original sensors, wireless operation, autonomy, and programming ... whew! SERVO Magazine (ISSN 1546-0592/CDN Pub Agree#40702530) is published monthly for $24.95 per year by T & L Publications,Inc., 430 Princeland Court, Corona, CA 92879. PERIODICALS POSTAGE PAID AT CORONA, CA AND AT ADDITION- AL ENTRY MAILING OFFICES. POSTMASTER: Send address changes to SERVO Magazine, P.O. Box 15277, North Hollywood, CA 91615 or Station PAGE 32 A, P.O. Box 54,Windsor ON N9A 6J5; [email protected] SERVO 05.2008 5 Mind-Iron May08.qxd 4/9/2008 12:54 PM Page 6 Published Monthly By T & L Publications, Inc. 430 Princeland Court Corona, CA 92879-1300 (951) 371-8497 FAX (951) 371-3052 Webstore Only 1-800-783-4624 www.servomagazine.com Mind / Iron Subscriptions Toll Free 1-877-525-2539 Outside US 1-818-487-4545 P.O. Box 15277 by Bryan Bergeron, Editor North Hollywood, CA 91615 PUBLISHER Tough Enough of the environment and still be Larry Lemieux capable of carrying out a military [email protected] Although not always labeled as mission. Fortunately, as with many ASSOCIATE PUBLISHER/ such, a lot of the articles featured in military advances in robotics, VP OF SALES/MARKETING SERVO address the issue of fragility. methods of hardening have Robin Lemieux [email protected] For one robot to battle another percolated through to the consumer head-on, or to compete in an arena market. EDITOR where jarring contact is inevitable, it The iRobot Looj (torn down Bryan Bergeron must be hardened against both the in this issue) illustrates how an [email protected] environment and attack from inexpensive consumer robot can be CONTRIBUTING EDITORS opposing robots. Weapon-wielding useful by virtue of its ability to Jeff Eckert Tom Carroll battle bots are the best example of perform in a hostile environment. Gordon McComb David Geer Dennis Clark R. Steven Rainwater the advantage of being tougher than The Looj features water-tight seams, Fred Eady Kevin Berry the competition and, to a lesser structural integrity that allows it to Brian Benson Robert Doerr extent, the environment. However, if survive a fall from a dozen feet onto Kate Howard Jim Stewart you take a champion battle bot out a grassy surface, and power that Charles Guan Rob Farrow Bryce Woolley Evan Woolley of a clean arena and run it outside in approaches that of a battle bot. Even Heather Dewey-Hagborg the rain, the water will likely destroy so, it’s light enough to be clipped to the electronics and mud clog the a utility belt. CIRCULATION DIRECTOR drive mechanism long before the The typical environmental Tracy Kerley [email protected] opposing battle bot has a chance to challenges faced by designers of land a blow. service robots can be just as MARKETING COORDINATOR I’m not suggesting that the threatening as a rain gutter. WEBSTORE robotics community should focus on Prototype robots designed to rescue Brian Kirkpatrick [email protected] creating Terminator robots. However, soldiers from the battlefield must be if we’re going to create truly useful able to handle a significant, WEB CONTENT service robots that can cook, clean, unbalanced load while remaining Michael Kaudze carry, and look after us in our old impervious to mud and debris. [email protected] age, then we need to move past Similarly, assistant robots for home PRODUCTION/GRAPHICS fragile robots to more sturdy designs. and hospital use must be able to Shannon Lemieux Most of my robots — whether from operate when contaminated with Joe Keungmanivong a kit or designed from scratch — body fluids and, more significantly, ADMINISTRATIVE ASSISTANT couldn’t survive a fall from a tabletop withstand the rigors of Debbie Stauffacher or an accidental dowsing with a cup decontamination. Unlike a surgical Copyright 2008 by of coffee. My relationship with these instrument that can be autoclaved, T & L Publications, Inc. robots is as their caretaker. I can’t nurse proxy robots must be able to All Rights Reserved yet imagine being taken care of by withstand frequent spray-downs with All advertising is subject to publisher’s approval. a robot. antiseptics. We are not responsible for mistakes, misprints, or typographical errors. SERVO Magazine Hardening a robot against the As illustrated by the prototypes assumes no responsibility for the availability or environment and other robots or of service robots used to retrieve condition of advertised items or for the honesty even ill-meaning humans is no mean wounded soldiers from the battlefield of the advertiser.The publisher makes no claims task. Companies like iRobot spend or to help patients in and out of bed, for the legality of any item advertised in SERVO. This is the sole responsibility of the advertiser. millions on R&D to harden their service robots must have sufficient Advertisers and their agencies agree to robots against the heat and humidity environmental resistance while posing indemnify and protect the publisher from any and all claims, action, or expense arising from advertising placed in SERVO. Please send all Mind/Iron Continued editorial correspondence, UPS, overnight mail, and artwork to: 430 Princeland Court, 6 SERVO 05.2008 Corona, CA 92879.
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