SERVO Webstore 19 Showcase 81 Robo-Links Robot Profile 20 New Products 81 Advertiser’S Index 29 Black Death 30 Events Calendar
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> 06 $7.00 CANADA $5.50 74470 58285 U.S. 04 Cover.qxd 5/6/2009 9:25 PM Page 1 Vol. 7 No. 6 SERVO MAGAZINE HAGETAKA • VIRTUAL LABORATORY • FLEX SENSORS • CHEAPBOT CONTROLLER June 2009 Full Page.qxd 5/6/2009 4:36 PM Page 2 “Build Smarter.” Full Page.qxd 5/6/2009 4:37 PM Page 3 TOC Jun 09.qxd 5/6/2009 3:15 PM Page 4 The Combat Zone... Columns 08 Robytes by Jeff Eckert Stimulating Robot Tidbits 10 GeerHead by David Geer First Robot for Cleaning Solar Cells 13 Ask Mr. Roboto by Dennis Clark Your Problems Solved Here 67 Robotics Resources PAGE 22 by Gordon McComb Blogging Your Way to Robotics Stardom Features 72 Beginner Electronics by William Smith 22 BUILD REPORT: Build Your Own Atom Nano Board The Intro Ant (for use in future projects) 25 MANUFACTURING: 76 Then and Now RioBotz Combot Tutorial by Tom Carroll 27 PARTS IS PARTS: Automated Guided Vehicles Banebots P60 1:16 Gearbox Departments Events NEW! 27 Results and Upcoming 06 Mind/Iron 32 Bots in Brief Competitions 07 Bio-Feedback 64 SERVO Webstore 19 Showcase 81 Robo-Links Robot Profile 20 New Products 81 Advertiser’s Index 29 Black Death 30 Events Calendar 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 ADDITIONAL ENTRY MAILING OFFICES. POSTMASTER: Send address changes to SERVO Magazine, P.O. Box 15277, North Hollywood, CA 91615 or Station A, P.O. Box 54,Windsor ON N9A 6J5; [email protected] 4 SERVO 06.2009 TOC Jun 09.qxd 5/6/2009 9:34 AM Page 5 06.2009 VOL. 7 NO. 6 PAGE 42 PAGE 50 PAGE 47 36 Implementing a Low Speed, Features Low Cost Communications Protocol (that you’ve probably never heard of) & Projects by Fred Eady LIN is a relatively young network topology used in automobile mechatronics. See how you can apply it to your robotic needs. 42 The CheapBot-14 Robot Controller by L. Paul Verhage Add this controller to your robot base of choice for an efficient and cheap learning environment. 47 A VIrtual Laboratory by John Blankenship and Samuel Mishal Simulate mechanical systems to streamline the designing process. 50 How to Make Bi-Directional Flex Sensors by John Iovine Flex sensors have a lot of applications in robotics. Here’s a simple approach to making your own. 54 Computer Control and Data Acquisition by David A. Ward Part 4: Working with analog signals. 58 Hagetaka: Bipedal Combat Robot by Andrew Alter Follow the journey of designing and building your own MechWarrior inspired robot. SERVO 06.2009 5 Mind-Iron - Jun09 dc.qxd 5/5/2009 8:25 AM Page 6 Published Monthly By T & L Publications, Inc. 430 Princeland Ct., Corona, CA 92879-1300 (951) 371-8497 FAX (951) 371-3052 Webstore Only 1-800-783-4624 www.servomagazine.com Subscriptions Toll Free 1-877-525-2539 Mind / Iron Outside US 1-818-487-4545 P.O. Box 15277, N. Hollywood, CA 91615 by Bryan Bergeron, Editor PUBLISHER Larry Lemieux [email protected] robotic technology: medical devices. The Broader Perspective ASSOCIATE PUBLISHER/ The archetypical medical device VP OF SALES/MARKETING Before you know it, it will be the — the implantable cardiac pacemaker Robin Lemieux end of summer. Time to finish that — is shown in the accompanying [email protected] robotics project that’s been lingering photo. As you can see, a pacemaker EDITOR on your workbench for weeks, and, is about half the width of my index Bryan Bergeron economics allowing, perhaps take finger. The diminutive device [email protected] one more vacation trip. If you’re a monitors the electrical activity of the TECHNICAL EDITOR student, it’s also the start of a new wearer’s heart and, when it detects a Dan Danknick academic year and time to think significant aberration in the signal, it [email protected] about starting or returning to school. generates a signal that paces the It’s also time to think about selecting heart back into a normal rate and CONTRIBUTING EDITORS Jeff Eckert Tom Carroll and pursing a career. rhythm. And normal is a function of Gordon McComb David Geer If you’re considering robotics as activity — slower for sitting and more Dennis Clark R. Steven Rainwater a field of study, make sure you take rapid for walking or jogging. Fred Eady Kevin Berry the broader perspective. As I’ve To accomplish this feat, the David Ward John Blankenship Samuel Mishal John Iovine mentioned in past editorials, the sealed, bio-inert device has to Andrew Alter Paul Verhage focus of robotics and — more flawlessly sense and respond to the Nick Martin Marco Meggiolaro importantly — robotics technology electrical activity of the wearer’s William Smith extends beyond creating Wall-E look- heart for five years or more. Think CIRCULATION DIRECTOR alikes, developing and testing combat battery technology, sensor Tracy Kerley robots, and creating automatic gutter technology, materials engineering, [email protected] cleaners. Although you may have thermal engineering, and electrical MARKETING COORDINATOR dreams of one day creating the engineering. WEBSTORE ultimate Cylon, you’ll probably make Moreover, we’re just getting Brian Kirkpatrick a bigger splash in the world by started, as the pacemaker is typically [email protected] working in one of the high-relevance part of a much larger system of WEB CONTENT areas that depends directly on devices that rely on robotics Michael Kaudze technologies. For starters, the [email protected] pacemaker has to be programmed to suit the physiology of the wearer. An PRODUCTION/GRAPHICS Shannon Lemieux active person with relatively modest cardiac disease requires a set of ADMINISTRATIVE ASSISTANT alarms and an auto pacing rate that Debbie Stauffacher are different from someone with Copyright 2009 by severe cardiac disease. This T & L Publications, Inc. programming is accomplished by a All Rights Reserved physician or other clinician who All advertising is subject to publisher’s approval. We are not responsible for mistakes, misprints, uses a wireless programmer that or typographical errors. SERVO Magazine assumes communicates with the embedded no responsibility for the availability or condition of pacemaker. A technician monitors advertised items or for the honesty of the the wearer’s EKG through a wireless advertiser. The publisher makes no claims for the legality of any item advertised in SERVO.This is the RF link with the pacemaker and sole responsibility of the advertiser.Advertisers and adjusts the triggering and pacing their agencies agree to indemnify and protect the publisher from any and all claims, action, or expense arising from advertising placed in SERVO. Please Mind/Iron Continued send all editorial correspondence, UPS, overnight mail, and artwork to: 430 Princeland Court, Corona, CA 92879. 6 SERVO 06.2009 Mind-Iron - Jun09 dc.qxd 5/5/2009 8:26 AM Page 7 Dear SERVO: If WALL-E is three feet tall as you state in the April issue, Response: then those are the biggest kids I have ever seen. That boy Whoops! Ultimate WALL-E in his normal state is 15.5" tall, to WALL-E’s left must be pushing 8’. but sometimes his eyes can tip up and reach 16" total Monty Saine height. David Geer parameters. Similarly, when the patient returns to the clinic for a checkup, the physician’s workstation communicates wirelessly with the pacemaker and downloads — in real time — the battery voltage, lead impedance, pacing activity, and other operating parameters. Think wireless telemetry and electrical engineering. The clinic use of machines to program and monitor the status of the patient and pacemaker pales in comparison to the supporting technology available from the home. Fuzzy logic within the pacemaker monitors the EKG and, if it detects a problem, it establishes a communications link with a home monitor that, in turn, establishes communications with a web server. Within minutes, an alarm condition appears on the physician’s cell phone or desktop monitor. Think fault-tolerant, real- time communications, computer science, web services, artificial intelligence, and data encryption technology. Of course, the pacemaker is 4FSWJDJOHZPVSDPNQMFUF only one of many free-standing, wearable, or implantable medical 1$#QSPUPUZQFOFFET devices that relies on robotics related technologies. For a ƅLow Cost - High Quality glimpse of the leading edge of PCB Prototypes medical devices, take a look at medGadget (www.medgadget ƅ&BTZPOMJOF0SEFSJOH .com) and the medical technology news section of Science Daily ƅ'VMM%3$JODMVEFE (www.sciencedaily.com). The /&8 take away is, if your interests ƅ-FBEUJNFTGSPNIST lie in sensors, computing, AI, /&8 ƅ0QUJPOBM$IFNJDBM5JOGJOJTITTII communications, and other no extra cost technologies related to robotics, 8BUDI“VS”1$#® your career options aren’t limited Follow the production of your PCB in to competing for the dozen or so 3&"-5*.& positions at NASA for developing planetary vehicles. It’s something email : [email protected] to consider when you’re weighing Toll Free USA : 1 877 390 8541 www.pcb-pool.com options for a rewarding career. SV SERVO 06.2009 7 Robytes - Jun 09 dc-edited.qxd 5/6/2009 11:37 AM Page 8 Robytes by Jeff Eckert Wings Over Mars both download and installation are (either fully robotic or a modified slow. You can also get a pdf or jpg standard automotive vehicle). file that allows you to print, cut out, EATR is entering the proof-of- and fold your own scale model. Just concept phase, which will focus on its visit http://marsairplane.larc. ability to recognize edible biomass nasa.gov/platform.html.