Build Your Own Combat Robot

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mechanical, 160 modifying R/C, 281–283 RC, 160 RC (radio-controlled), 135, 136–137 Shafts getting torque from, 58 securing gears to, 122–124 Sharp GP2D02 Infrared Range Sensors, 245 Sharp GP2D05 Infrared Proximity Sensors, 245 Sharp GP2D12 Infrared Range Sensors, 245 Sharp GP2D15 Infrared Proximity Sensors, 245 Shear strength, 199 Sheave defined, 121 Sheet metal screws, 200 stainless steel, 187 Sheets battery manufacturer’s data, 91 data, 80 Shelf life, rechargeable batteries and, 85 Shielding, antennas and, 173–174 Shop tools gaining knowledge in use of, 36 larger, 37 safety in use of, 37 Show, finally the, 325–327 Shutdown feature known as failsafe, 155 Signals data checksum, 168 radio systems and loss of, 179 Single strand roller chain, 115 Sites official first Web, 15 robot competition Web, 344 Six-legged hex-walkers, 43 Six-minute capacities, comparing batteries with similar, 89 Six-minute run time, sizing for, 85–86 Sizing batteries, 93 Sketches, making, 316 Skid steering, 25 SLA run-time capacities, comparing, 86 SLA (Sealed Lead Acid) batteries, 83, 93–95 have lowest internal voltage drop, 88 manufacturers, 95 Slop, gear, 122 Slots, wheel assembly with pre-cut, 59 Smaller robots, 50 Smentowski, Jim, 86 Soccer, 10–11 Softer steel alloys, 188 Software algorithms, advanced, 301–302 Software, CAD (computer aided design), 110, 308 Soldering connectors, 339 PCBs (printed circuit boards), 338 for robots, 337–339 wires, 339 Solenoid relays defined, 130 Solenoids, starter, 131 Solid core wires, 92 Solid-state logic, 137–139 SP (single-pole) relay, 128 SPDT (single-pole double-throw) relay, 128, 251 Spear bots, 233–236 spear design, 233–236 strategy, 236 Specification, sumo ring, 280–281 Speed motor, 65 no load, 63 Speed control, variable, 139–155 commercial electronic speed controllers, 143–155 controlling speed = controlling voltage, 140 Speed controllers, 172 4QD, 152–153 motor, 26 Vantec, 149–152 Victor 883, 147–149 Speed controllers, commercial electronic, 143–155 hobby ESCs, 143–146 Speed, controlling, 140 FET (Field Effect Transistor), 142–143 PWM (pulse width modulation), 140–142 Speed reducers, 104, 123, 124 commercial, 123 Speed reduction, 104, 106 Spike strips, 8 Spinner bots, 220–222 spinner design, 221–222 strategy, 222 Spinners, vertical, 224–226 strategy, 226 vertical spinner design, 224–226 Index 377
378 Build Your Own Combat Robot Sponsors, knowing when they are needed, 191–192 Sport has changed a lot in five years, 23 love of, 23 Sport robotics, fate of, 332 Sprocket and chain system, implementing, 117 Sprockets chain, 117–118 idler, 117 locating on robots, 118 ST (single-throw) relays, 129 Stability, voltage, 87–89 Stainless steel, 187–188 sheet metal, 187 Stamp, Basic, 255, 265–267 Standoff distances, constant, 252–253 Start building now, 33 Starter solenoids, 131 Starting design process, 22 motors, 63 Starting to build robots, 21–38 cost factors in large robot construction, 35–36 robot design approach, 23–34 safety, 36–38 sources of robot parts, 35 top ten reasons why robots fail, 34 Static sensitivity, 340 Steel cold-rolled, 188 mild, 188 stainless, 187–188 Steel alloys, softer, 188 Steel, chrome, 187 Steering Ackerman, 47–48 differential, 48–50 skid, 25 tank-type, 25, 48 types of, 47–50 Strength shear, 199 tensile, 198 Strengths of materials, 185 Strips, spike, 8 Strong metal, 185 Structural design for fastener placement, 195 Subsystems, RC, 178 Sumo class, international robot, 299–303 Sumo events, 10 annual robot, 303 robot, 4 Sumo matches, how they proceed, 278–279 Sumo, mini, 281–298 autonomous mini sumo, 286 building mini sumo, 284 edge detector, 286–290 mini sumo body assembly, 284–285 modifying R/C servo for continuous rotation, 281–283 object detectors, 290–292 performance improvements, 297 remote-control mini sumo, 285–286 sensor integration, 293–296 various mini sumo robots, 297–298 Sumo ring specification, 280–281 Sumo, robot, 275–303 annual robot sumo events, 303 how sumo match proceeds, 278–279 international robot sumo class, 299–303 mini sumo, 281–298 sumo ring specification, 280–281 Suppliers battery, 346 electronics, 348–349 mechanical system, 347–348 microcontroller, 350 robot part, 302 Supporting axles, 54–55 Supporting wheels, 54–55 Surplus houses, 199 Switches conductive liquid, 247 forward-going, 135 kill, 132 manual disconnect, 132 reverse-going, 135 transistors act like, 141 turning on and off, 135–139 Switching, servo, 137 Synchronous belts, 119–120 System interface drawings, 30 System receiver, RC (radio-controlled), 112 System suppliers, mechanical, 347–348 System vendors, remote control, 347 Systems belt drive, 118–121 chain drive, 115–118 efficiency of propulsion, 46 high-pressure pneumatic, 37 implementing sprocket and chain, 117
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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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4 Build Your Own Combat Robot FIGUR
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6 Build Your Own Combat Robot aroun
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10 Build Your Own Combat Robot Pinb
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12 Build Your Own Combat Robot FIGU
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16 Build Your Own Combat Robot Robo
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18 Build Your Own Combat Robot In t
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22 S we said in Chapter 1, it’s g
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24 Build Your Own Combat Robot Even
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30 Build Your Own Combat Robot Befo
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32 Build Your Own Combat Robot What
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34 Build Your Own Combat Robot Test
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36 Build Your Own Combat Robot S af
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38 Build Your Own Combat Robot Ther
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42 OVING is what many might call a
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46 Build Your Own Combat Robot Bot
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52 Build Your Own Combat Robot You
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56 Build Your Own Combat Robot Thro
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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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Determining the Motor Constants Cha
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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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Chapter 4: Motor Selection and Perf
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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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80 LECTRICALLY powered competition
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104 NE of the most important consid
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128 F batteries are the source of p
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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 8-2 Futaba’s top of-the-li
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Chapter 8: Remotely Controlling You
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FIGURE 8-4 Typical radio frequency
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FIGURE 8-5 Motor with three capacit
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Innovation First Isaac Robot Contro
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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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Chapter 9: Robot Material and Const
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Welding, Joining, and Fastening We
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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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204 ECAUSE robot combat has evolved
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240 HE robots described in the book
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242 Build Your Own Combat Robot Pas
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248 Build Your Own Combat Robot tub
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250 Build Your Own Combat Robot One
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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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S ummary Chapter 12: Robot Brains 2
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276 HE referee signals, and my hear
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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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FIGURE 14-2 Chew Toy with protectiv
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FIGURE 14-3 Wheel shown bolted to d
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FIGURE 14-5 Front view with arm dow
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Final Words Chapter 14: Real-Life R
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Chapter 14: Real-Life Robots: Lesso
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Chapter 14: Real-Life Robots: Lesso
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design all the parts, and Dave did
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FIGURE 14-12 The 4-inch-tall alumin
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FIGURE 14-15 Internal view of Live
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Page 375 and 376: 356 OLLOWING are formulas that you
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Page 395: sources of robot parts, 35 top ten
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Page 401: INTERNATIONAL CONTACT INFORMATION A
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