using sensors to allow robots to feel, 241–248 using sensors to allow robots to hear, 241–248 using sensors to allow robots to see, 241–248 Autonomous target tracking, 253–256 AWG (American Wire Gauge), 91 AWG copper wire minimum current ratings, 91 Axle drives, powered, 57–59 Axles mounting, 54–55 mounting using various types of bearings, 55–57 supporting, 54–55 wheel permanently mounted to powered, 59 B Base-loaded antenna, 174 Basic Stamp, 255, 265–267 Basic Stamp 1 program, 294–296 Basic Stamp 1 program, sample, 289–290 Batteries accessible vs. nonaccessible, 100 Alkaline, 83 alkaline, 98–99 brand-new rechargeable, 84 conversion factors, 86 discharging, 85 estimating current capacities in, 91 heart and blood of one’s robots, 100 installing, 100 lead acid, 92 limiting amount of current, 72 Lithium Ion, 83 lithium ion, 99 manufacturer’s data sheets of, 91 measuring current draw from, 80–81 NiCad (Nickel Cadmium), 83, 95–97 NiMH (Nickel Metal Hydride), 83, 97–98 not potting, 83 primary purpose of, 80 purchasing, 83–84 rechargeable, 85 sizing, 93 SLA (Sealed Lead Acid), 83, 93–95 Battery packs, 84 performance characteristics, 90 suppliers, 346 Battery capacity basics, 83–91 comparing amp hour capacities, 86–87 comparing SLA, NiCad, and NiMH run-time capacities, 86 preventing early battery death, 84–85 sizing for 6-minute run time, 85 voltage stability, 87–89 wrapping up comparison, 89–91 Battery/charger combinations, drill, 99 Battery chargers, 99 Battery death, preventing early, 84–85 Battery eliminator circuits (BECs), 145, 172 Battery power requirements, 80–83 blowing fuses on purpose, 82–83 measuring current draw from batteries, 80–81 suitable resistors and measurement basics, 81–82 using Ohm’s Law to measure current draw, 81 Battery types, 92–99 alkaline batteries, 98–99 lithium ion batteries, 99 NiCad (Nickel Cadmium) batteries, 95–97 NiMH (Nickel Metal Hydride) batteries, 97–98 SLA (Sealed Lead Acid) batteries, 93–95 Battle-like conditions, testing robots in, 82 BattleBots BotBash is smaller-scale version of, 11–12 is most popular robotics event, 7 weight classes for wheeled, 8 BattleBots-style (radiocontrolled) machine, 22 BattleBox, 7–8 hazards and weapons, 7–8 Index 359
360 <strong>Build</strong> <strong>Your</strong> <strong>Own</strong> <strong>Combat</strong> <strong>Robot</strong> Beacon, infrared, 253 BEAM (Biology Electronics Aesthetics Mechanics) robots, 35 Bearings mounting axles using various types of, 55–57 pillow block, 56 BECs (battery eliminator circuits), 145, 172 Beginning-level robot builders, 43 Belt drive systems, 118–121 flat belts, 118 synchronous belts, 119–120 V-belts, 121 Belts determining load-carrying capacities of timing, 120 flat, 118 synchronous, 119–120 timing, 119, 357 V, 121, 357 Bench sanders, 194 Bench-top drill presses, small, 194 Bending moment, 50 Bi-directional control of motors, 143 Biology Electronics Aesthetics Mechanics (BEAM) robots, 35 Biped robots, 43 Blind rivets, 200–201 Blowing fuses, 82–83 Board, Handy, 268 Boards, breadboarding and using prototyping, 336–337 Body armor, 37 Body assembly, mini sumo, 284–285 Bolts, 197–200 Book, scope of this, 17–18 Books, reference, 350–351 Bot builder, rookie, 174 Bot experimenters opt for rubber tracks, 46 Bot frames, designing, 26 Bot functions, automating, 27 BotBash is smaller-scale version of BattleBots, 11–12 walking robot weight classes, 12 wheeled robot weight classes, 12 BotBoard, 268 Bots building, 310–311 building for fun, 24 providing propulsion to, 25 Bots, clamp, 215–217 clamp design, 215–216 strategy, 216–217 Bots, crusher, 231–233 crusher design, 231–233 strategy, 233 Bots, drum, 226–228 drum design, 226–228 strategy, 228 Bots, hammer, 228–231 hammer design, 228–231 strategy, 231 Bots, lifter, 210–212 lifter design, 210–212 strategy, 212 Bots, overhead thwack, 219–220 strategy, 220 thwack mechanism design, 219–220 Bots, ram, 205–207 ram design, 205–207 strategy, 207 Bots, saw, 222–224 saw design, 223–224 strategy, 224 Bots, spear, 233–236 spear design, 233–236 strategy, 236 Bots, spinner, 220–222 spinner design, 221–222 strategy, 222 Bots, thwack, 217–219 strategy, 218–219 thwack bot design, 217–218 Bots, wedge, 208–210 strategy, 209–210 wedge design, 208–209 Brains, American Gladiators for people with, 16 Brains, robot, 27, 260–274 microcontroller applications, 269–274 microcontroller basics, 261–269 BrainStem bug, 271–272 new microcontroller board, 267 Brass, 188–189 free-machining, 188 Breadboarding and using prototyping boards, 336–337 Brushless PMDC motor, 73 Bug, BrainStem, 271–272 <strong>Build</strong> robots, starting to, 21–38 cost factors in large robot construction, 35–36 robot design approach, 23–34 safety, 36–38 sources of robot parts, 35
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Build Your Own Combat Robot Pete Mi
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For more information about this boo
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Contents For more information about
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Current Ratings, 129 How It All Wor
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Object Detector, 290 Sensor Integra
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Acknowledgments We would like to th
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Introduction Some kids spend their
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About the Authors xv About the Auth
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2 ELCOME to the world of combat rob
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22 S we said in Chapter 1, it’s g
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chapter Motor Selection and Perform
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Chapter 4: Motor Selection and Perf
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FIGURE 4-1 Typical motor performanc
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FIGURE 4-2 Heat generated in an ele
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FIGURE 4-4 Motor power changes by d
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FIGURE 4-7 24-volt, 185 rpm, 896 in
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the robot. If the engine is used to
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chapter Remotely Controlling Your R
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FIGURE 8-1 Wiring and rotational po
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FIGURE 8-4 Typical radio frequency
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FIGURE 8-6 Block diagram of Isaac o
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chapter 9 Robot Material and Constr
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Metals Aluminum Chapter 9: Robot Ma
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Stainless Steel Chapter 9: Robot Ma
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Titanium used to solder small brass
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place, or some liquid may have ente
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vibration and bounce around the ins
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chapter 12 Robot Brains Copyright 2
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FIGURE 12-1 From top left to bottom
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Chapter 12: Robot Brains 263 space
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FIGURE 12-2 The BoeBot from Paralla
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Handy Board BotBoard Chapter 12: Ro
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FIGURE 12-5 Robo-Goose, a robotic g
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FIGURE 12-8 A fully autonomous robo
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chapter 14 Real-Life Robots: Lesson
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FIGURE 14-1 Chew Toy Chapter 14: Re
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