Page 245 - 15 Dangerously Mad Projects for the Evil Genius

220 Index

persistence-of-vision display (cont.) S
assembly, 85–89
schematic diagrams
changing the message, 102–103
example, 206
computer setup, 89–93
general information, 205
configuring the Arduino environment, 93–94
SCRs (silicone-controlled rectifiers), 4, 6
installing on Linux, 93
servo motors, 45–47
installing on Mac OS X, 92–93
servos, 39–41
installing on Windows, 89–92
adjusting the servo arms, 43
making the battery connector, 95
shield boards, 83
motor controller, 96–100, 101, 106
sight, assembly, 68–71
overview, 81, 83
sling. See trebuchet
parts and tools needed, 84–85
snailbot
platform, 100
assembling the charger, 182–184
programming the Arduino board, 94
assembly, 178–182
putting it all together, 100–102
overview, 177
schematic diagram, 84
parts and tools needed, 178
stripboard layout for the LED module, 86
schematic diagram, 179, 183
testing the LED module, 94–95
theory, 184
theory, 103–106
snips, 211–212
phototransistors, 66
soldering, 212
ping-pong ball minigun
stripboard, 41–43, 70, 85–87, 97–99, 109, 110
assembly, 27–31
stripping wires, 211–212
finding the muzzle velocity, 31–33
suppliers, 211
overview, 25–26 surveillance robot
parts and tools needed, 26–27
assembling it all, 191–197
testing, 31
assembling the motor drivers, 187–191
theory, 33
overview, 185
PIR sensors, 194–195
parts and tools needed, 187, 191–192
pliers, 211–212
schematic diagram, 186, 188
position sensing, 170–171
testing, 198
projectiles, 8
testing the motor controller module, 189–191
measuring projectile speed, 9–10
wiring diagram, 191
pulse width modulation. See PWM
switches, double-throw, 7
PWM, 106
symbols for common electronics, 207
R T
radio bug Thyristors, 4
assembly, 109–114 See also SCRs (silicone-controlled rectifiers)
bug detector, 107 time travel, 137
FM transmitter, 107 timer ICs, 47–48
overview, 107–108 tools
parts and tools needed, 109 basic tools needed, 211
schematic diagram, 108 component boxes, 211
testing, 114 multimeters, 213–214
using, 114 oscilloscopes, 214–215
See also bug detector snips and pliers, 211–212
ray gun soldering, 212
assembly, 50–52 touch sensor, 68, 70
testing, 52–53 touch-activated laser sight
wiring diagram, 52 assembling the sight, 68–71
See also balloon-popping laser gun layout of the components, 69
resistance measurement, 214 overview, 67
resistors, 208–209 parts and tools needed, 67–68
robots. See light-seeking microbot; surveillance robot schematic diagram, 69