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SERVO MAGAZINE TOUCH SENSORS • VIRTUAL SENSORS • MOBILE ROBOT SENSORS • ROBOGAMES July 2012 Full Page Full Page.Qxd 5/7/2012 6:41 PM Page 2 0 0 07 . 7 4 $ A D A N A C 0 5 . 5 $ 71486 02422 . $5.50US $7.00CAN S . 0 U CoverNews_Layout 1 6/5/2012 9:14 PM Page 1 Vol. 10 No. 7 SERVO MAGAZINE TOUCH SENSORS • VIRTUAL SENSORS • MOBILE ROBOT SENSORS • ROBOGAMES July 2012 Full Page_Full Page.qxd 5/7/2012 6:41 PM Page 2 HS-430BH HS-5585MH HS-5685MH HS-7245MH DELUXE BALL BEARING HV CORELESS METAL GEAR HIGH TORQUE HIGH TORQUE CORELESS MINI 6.0 Volts 7.4 Volts 6.0 Volts 7.4 Volts 6.0 Volts 7.4 Volts 6.0 Volts 7.4 Volts Torque: 57 oz-in 69 oz-in Torque: 194 oz-in 236 oz-in Torque: 157 oz-in 179 oz-in Torque: 72 oz-in 89 oz-in Speed: 0.16 sec/60° 0.14 sec/60° Speed: 0.17 sec/60° 0.14 sec/60° Speed: 0.20 sec/60° 0.17 sec/60° Speed: 0.13 sec/60° 0.11 sec/60° HS-7950THHS-7950TH HS-7955TG HS-M7990TH HS-5646WP ULTRA TORQUE CORELESS HIGH TORQUE CORELESS MEGA TORQUE HV MAGNETIC ENCODER WATERPROOF HIGH TORQUE 6.0 Volts 7.4 Volts 4.8 Volts 6.0 Volts 6.0 Volts 7.4 Volts 6.0 Volts 7.4 Volts Torque: 403 oz-in 486 oz-in Torque: 250 oz-in 333 oz-in Torque: 500 oz-in 611 oz-in Torque: 157 oz-in 179 oz-in Speed: 0.17 sec/60° 0.14 sec/60° Speed: 0.19 sec/60° 0.15 sec/60° Speed: 0.21 sec/60° 0.17 sec/60° Speed: 0.20 sec/60° 0.18 sec/60° TOC JuL12.qxd 6/5/2012 8:22 PM Page 4 07.2012 VOL. 10 NO. 7 Columns 08 Robytes by Jeff Eckert Stimulating Robot Tidbits 10 Ask Mr. Roboto by Dennis Clark Your Problems Solved Here 14 GeerHead by David Geer Count on the ARTAS System for That New Head of Hair 68 Twin Tweaks by Bryce and Evan Woolley Big Trouble in the Little Dohyo 74 Then and Now by Tom Carroll Sensors for Mobile Robots — Part 3 PAGE 14 06 Mind/Iron PAGE 22 18 Events Calendar 19 Showcase 20 New Products 22 Bots in Brief 64 SERVO Webstore 81 Robo-Links Departments 81 Advertiser’s PAGE 74 Index 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 07.2012 TOC JuL12.qxd 6/5/2012 8:22 PM Page 5 In This Issue ... SENSORS! 48 Reach Out and Touch Something — Giving Your Robot the Sense of Feel PAGE 48 by Gordon McComb Touch lets your bot determine its surroundings by making physical contact. Learn about a trio of common and inexpensive touch sensor types that you can add to your favorite automaton so it can get a sense of what’s around it. 54 Virtual Sensors — Part 1 by John Blankenship and Samuel Mishal In order for your robot to perform properly, it needs as much sensory data as possible. Unfortunately, physically increasing the number of sensors on your bot has potential problems. So, go virtual before completing your design. 58 Using Advanced Sensors With VEX — the Peltier Effect by Daniel Ramirez This time, see what your VEX micro can do to heat (or cool!) things up. The Combat Zone... Features 28 BUILD REPORT: Horses for Courses 37 EVENT REPORT: 30 BUILD REPORT: Robot Riot Photojournal Siafu: An Army of Ants — Part 2 38 EVENT REPORT: 45 The History of Robot Combat: Robot Rumble 5 RoboGames 39 EVENT REPORT: Events RoboGames 2012 32 EVENT REPORT: 41 EVENT REPORT: Insects Invade RoboGames South Florida Robot Riot SERVO 07.2012 5 Mind-Iron - Jul 12.qxd 6/5/2012 9:53 AM Page 6 FOR THE ROBOT ERVO Mind / Iron INNOVATOR Published Monthly By by Bryan Bergeron, Editor T & L Publications, Inc. 430 Princeland Ct., Corona, CA 92879-1300 Putting Robots to the Test (951) 371-8497 FAX (951) 371-3052 If you’re a fan of Blade Runner, Battle Star Galactica, Alien, Terminator, or Webstore Only 1-800-783-4624 Prometheus, then you know that — at least for most people — the pinnacle of www.servomagazine.com robotics is much more than a walking and talking tin can. The robots featured in Subscriptions these and other sci-fi classics certainly pass the Touring Test: a necessary but Toll Free 1-877-525-2539 inadequate measure of how closely a robot resembles a human. Although not Outside US 1-818-487-4545 explicitly stated, these robots are physiologically correct – they breathe, bleed, P.O. Box 15277, N. Hollywood, CA 91615 and sweat as we do. Short of surgical exploration, the ultimate android is PUBLISHER physically indistinguishable from a real human. This suggests the physical Larry Lemieux equivalent of the Touring Test for androids. I suggest the following test: Allow [email protected] a clinician to physically examine humanoid robots with the non-invasive ASSOCIATE PUBLISHER/ instruments used for a traditional physical exam: a reflex hammer, blood VP OF SALES/MARKETING Robin Lemieux pressure cuff, stethoscope, ophthalmoscope, and their hands – for 10 minutes. [email protected] The clinician — without engaging in a conversation with the robot — must EDITOR determine whether their patient is human, robot, or something in between. Bryan Bergeron Because no human is perfect, this test suggests that the robot must exhibit [email protected] some combination of normal and abnormal physical findings. Perhaps the robot’s CONTRIBUTING EDITORS blood pressure is a bit elevated, there’s a touch of asthmatic wheezing audible Jeff Eckert Jenn Eckert from the lungs, or there’s a slight heart murmur. Tom Carroll David Geer Dennis Clark R. Steven Rainwater So, if this is perfection in a physical sense, then how do we get from where Kevin Berry Gordon McComb we are now to the future of robotics? Science fiction writers and self-anointed Pete Smith Dave Graham futurists have the advantage of not having to create a detailed project plan for Andrea Suarez Ray Billings Morgan Berry Daniel Ramirez the realization of their visions. A more practical assessment of the trajectory of John Blankenship Samuel Mishal human-like robotics is to look at the progress in the development of human Bryce Woolley Evan Woolley surrogates to train clinicians in both civilian and military scenarios. Task trainers – system-specific physical simulators — are increasingly used to train medics, nurses, CIRCULATION DEPARTMENT and physicians on how to save lives and treat real patients. There are commercial [email protected] and academic task trainers for applications ranging from learning to suture MARKETING COORDINATOR WEBSTORE wounds, applying a tourniquet to stop massive bleeding, and interpreting heart Brian Kirkpatrick and lung sounds to measure blood pressure, and delivering a baby. [email protected] Depending on the fidelity of these trainers and the availability of competing WEB CONTENT products, prices range from under $100 to $200K. Even at the upper price Michael Kaudze range, there is ample room for improvement. So, where to start? [email protected] I’d begin by reviewing the classic sci-fi films to decide what’s a worthy goal. ADMINISTRATIVE ASSISTANT Superhuman strength or the ability to morph into another object or person Debbie Stauffacher probably shouldn’t be at the top of your list. Take a rational assessment of your PRODUCTION/GRAPHICS resources. Do you have a team of PhDs working for you or perhaps only a Shannon Christensen drawer full of servos and microcontroller boards? Assuming the latter, I’d start Sean Lemieux with something simple, such as replicating a basic reflex arc — think knee reflex. Copyright 2012 by If your neuromuscular system is normal, then when one of your tendons is T & L Publications, Inc. All Rights Reserved suddenly stretched by someone else – say, by a nurse striking it with a rubber reflex hammer – then the muscle attached to the tendon will respond by quickly All advertising is subject to publisher’s approval. We are not responsible for mistakes, misprints, contracting. There is some value in this reflex if you examine what happens or typographical errors. SERVO Magazine assumes when you land after jumping down from a step stool. As you land, the tendon no responsibility for the availability or condition of is suddenly stretched, signaling the muscle to contract, cushioning your landing. advertised items or for the honesty of the This unconscious reflex — which doesn’t involve the higher centers of the advertiser. The publisher makes no claims for the legality of any item advertised in SERVO.This is the brain — helps keep you upright and on your feet. (By the way, if you hit the sole responsibility of the advertiser.Advertisers and tendon yourself or consciously focus on the reflex, you won’t see it – do you their agencies agree to indemnify and protect the know why?) publisher from any and all claims, action, or expense arising from advertising placed in SERVO. Please To replicate the basic tendon reflex, you don’t need much more than a send all editorial correspondence, UPS, overnight microcontroller, servo, and sensor. The sensor could be a commercial strain mail, and artwork to: 430 Princeland Court, gauge or a piece of carbon-impregnated foam (the kind used to control static Corona, CA 92879.
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