Servo Magazine 09 2006

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WWW.ROBOTSTORE.COM/SRB I-800-374-5764 WWW.ROBOTSTORE.COM/SRB I-800-374-5764 Enthusiasts, Start D ream ing Gift G ivers, Take N ote Engineers, We’ve G ot It All! Enthusiasts, Start Dream ing Gift G ivers, Take N ote Engineers, We’ve G ot It All! Robotic Kits and Components The World’s Most Complete Offering! CATALOG I62 I-800-374-5764 WWW.ROBOTSTORE.COM Call for your free catalog today! Robotic Kits Components The Perfect Summer Projects for Kids of all Ages! Robotic Kits Components The Perfect Summer Projects for Kids of all Ages! robotic kits chassis servos passives optos integrated circuits semiconductors muscle wires connectors motors test equipment software books [...]... Custom Computer Services, Inc www.ccsinfo.com Sells the C compiler used for the PIC code on SERVO s website Borland www.borland.com/us Sells the C++ compiler used for the PC code on SERVO s website Spark Fun Electronics www.sparkfun.com Sells a laser module that you could use for your range finder SERVO 09. 2006 23 Featured This Month Participation 24 Welding Safety by Steven Kirk Nelson 25 Troubleshooting... only Medallions will be awarded Sponsorship certificates will be awarded Format: Standard double elimination, all classes This is a 2006 qualifier for the RFL Nationals See www robotrebelion.net for more details 32 SERVO 09. 2006 F all Whyachi House of Robotic Entertainment 2006 — September 16-17, Dorchester, WI Presented by WHRE No pit passes, no limits on pit members, no fee for spectators, all entry... the value and had stopped there In short, this chunk of code finds the cen- Figure 11 The distance calculator program 22 SERVO 09. 2006 The last thing that you will need is the actual lookup table to figure out your distances You can get a pretty good approximation with the software on SERVO s website The code in the lookup table generator gives approximately the correct distance The range finder built... megacorp.com MOTOR CONTROLLERS SpectroSMC pectro Technologies, Inc., announces the addition of SpectroSMC to its line of smart plug-in device modules SpectroSMC is an eight channel servo motion controller that provides accurate S SERVO 09. 2006 35 THOUSANDS OF ELECTRONIC PA R T S A N D S U P P L I E S VISIT OUR ONLINE STORE AT www.allelectronics.com WALL TRANSFORMERS, ALARMS, FUSES, CABLE TIES, RELAYS, OPTO ELECTRONICS,... talks about the average current draw with a 1 ohm resistor for R1 This can be misleading because it is the time average, not a peak current draw The IR LED sends out a burst of 16 pulses at a Q A 16 SERVO 09. 2006 6.67 kHz frequency For 18 µs during each time the IR LED is on, the current draw is approximately 300 mA when R1 is a 1 ohm resistor When R1 is 2.2 ohms, the peak current draw drops to approximately... rear housing back on the rear of the internal sensor module Then with the forward lens Figure 7 Closeup view of the front of the sensor module showing the IR LED and the position sensing detector SERVO 09. 2006 17 Industrial Strength Motor Control for All AX2550 AX2850 Figure 8 Using a small jeweler’s screwdriver to slowly work the lens mount out of the forward lens housing AX1500 AX3500 Get the DC... Extrusion, B=Board-Level, O=Optical Encoder In, R= RC outputs Qty1 price Contact us for OEM Qty prices 8180 E.Del Plomo Dr Scottsdale AZ USA 85258 (602) 617-3931 - info@roboteq.com www.roboteq.com 18 SERVO 09. 2006 Sharp GP2Y0D340K Distance Sensor 30 Price $275 $395 $495 $645 $620 $770 slot And, 100% means that the tab is pushed all the way to the right (towards the fixed lens) Figure 10 shows that the... Figure 1 A diagram of how a laser range finder works Figure 2 The range finder with the camera tilted downward How it Works Let’s take a look at how laser range finding works Take a look at Figure 1 SERVO 09. 2006 19 Rubberbands and Baling Wire Figure 3 The range finder with a narrower field-of-view Figure 4 The range finder with more distance between the laser and image sensor is to use a sensor with... to increase your accuracy is to increase the distance between your image sensor and the laser Figure 4 shows the result of doing that Once again, tilting Figure 5 A drawing of the range finder 20 SERVO 09. 2006 your image sensor can compensate for the loss of nearer measurements There is a danger to increasing the distance between your image sensor and the laser that you should be aware of When you... Range Finder In a nutshell, that is all there is to making a laser range finder Figures 1 through 4 were generated with a piece of software written for this column You can download it from SERVO s website (www.servomagazine.com) to help you figure out what the best setup for your application would be Let’s look at how you can actually make your own range finder This design doesn’t allow for tilting of . the Solution 79 Then and Now by Tom Carroll Robots Who Listen 4 SERVO 09. 2006 ENTER WITH CAUTION! 24 The Combat Zone 09. 2006 VOL. 4 NO. 9 SERVO 09. 2006 5 37 CampusBot by Dave Calkins Spanish robots show flair. Hitec Robonova kit. Go to www .servomagazine. com now and complete our Reader Survey for your chance to win! SERVO 09. 2006 7 by J. Shuman $1,000 VALUE! 8 SERVO 09. 2006 Automated Transfer Vehicle. DVD/CD duplicating, publishing, and digital imaging. Photo courtesy of Alera Technologies, Inc. SERVO 09. 2006 9 10 SERVO 09. 2006 T his month, we have the pleasure of presenting the Viper from Microbric, a robot