Page 244 - 15 Dangerously Mad Projects for the Evil Genius

Index 219

laser voice transmitter M
aligning the transmitter with the receiver, 137
measuring current, 213–214
assembly of the receiver, 125–130
measuring voltage, 213
assembly of the transmitter, 131–137
Metal Oxide Semiconductor Field Effect Transistors.
duplex transmission, 137
See MOSFETs
how the receiver works, 140
microbot, light-seeking
how the transmitter works, 138–140
assembling the charger, 182–184
overview, 123, 130–131
assembly, 178–182
parts and tools needed, 125, 131
overview, 177
receiver, 123–124
parts and tools needed, 178
schematic diagram, 124, 130, 139
schematic diagram, 179, 183
testing, 134–135
theory, 184
theory, 137–140
microcontroller board, 81–83
wiring diagram, 128
attaching to the levitation machine, 165–166
laser-grid intruder alarm
configuring, 93–94
assembly, 75–78
programming, 94, 167–168, 198–201
installation, 79–80
mini laser turret
overview, 73–74
assembly, 36–45
parts and tools needed, 74–75
controlling more than one turret from a joystick, 45, 46
schematic diagram, 75
overview, 35
testing, 79
parts and tools needed, 35–36
theory, 80
schematic diagram, 37
wiring diagram, 77
theory, 45–48
LED strobe wiring diagram, 44
assembly, 150–156
minigun, ping-pong ball
overview, 149
assembly, 27–31
parts and tools needed, 150
finding the muzzle velocity, 31–33
schematic diagram, 151
overview, 25–26
theory, 157–158
parts and tools needed, 26–27
LEDs
testing, 31
charging, 8
theory, 33
high-brightness LEDs (HB LEDs), 149
MOSFETs, 65–66
using, 157–158
motor controllers
See also high-brightness LED strobe
assembly, 97–100
levitation machine
overview, 96
ambient light compensation, 171–172
parts and tools needed, 97, 98
assembly, 161–169
pulse width modulation, 106
basic principles, 170
schematic diagram, 97
control software, 172–175
wiring diagram, 101
making something to levitate, 168–169
motor drivers, 187–191
overview, 159
multimeters, 213–214
parts and tools needed, 159–160
muzzle velocity, measuring, 31–33
position sensing, 170–171
programming the Arduino board, 167–168 O
schematic diagram, 166 operational amplifiers, 138–139
testing, 169–170 oscilloscopes, 214–215
wiring diagram, 165
light-seeking microbot P
assembling the charger, 182–184 perforated board, 59, 60, 61
assembly, 178–182 persistence of vision, theory of, 103, 104
overview, 177 persistence-of-vision display
parts and tools needed, 178 Arduino microcontroller board, 81–83
schematic diagram, 179, 183 Arduino sketch (program code), 103–106
theory, 184 assembling the woodwork, 95–96