■ INDEX
e^2 titanium battery, 86–87
holder, 365
Li-poly, 83
lithium, 84
mounting batteries, 88
nickel-cadmium battery, 86
NiMH, 82
polystyrene foam iller, 87
reversing, 430
testing voltage
interpreting test results, 80
setting up, 78
ultra battery, 86–87
Non-rechargeable batteries
alkaline, 84
lithium, 84
Numbering systems
metric system, 51
powers of thousand, 51
M & m, 53
micro, 54
O
Object detection, 414
Object sensors, 415
Ohm's law, 427
Online resistance calculator, 105
Online stores, 15
component, 16
parts or packages, 17
price comparison, 17
saving money, 17–18
Oscillators, 415
P, Q
Palm-sized line-following robot, 66
Photoresistors, 388
Pilot and drilling screw holes, 354
Pin labeling (transistors), 433
Planetary vs. spur gearhead
motors, 250
Point-to-point soldering vs. printed circuit
board, 333
Polymeric positive temperature coeicient (PPTC)
switches, 27
Potential improvements, Line-following robot
battery’s lifespan, 386
beneicial changes, 386
cadmium-sulide photoresistors, 388
capacitors, 387
diode, 386
electrical brake, 390
frame by frame analysis, 388
Potentiometers
assorted trimpots, 174
maximum value, 172
multiturn trimpot, 174
Sandwich’s sensor, 172
single-turn dials, 173
testing
maximum resistance, 174
robotic applications, 176
variable resistance, 175
trimpot, 172
variety, 171
Power indicator circuit
alligator clips, 127
battery life calculation, 134
LED formula, 136
resistors, 135
components, 128
current low measurement, 132
experiment, 128
in-circuit voltage, 129
schematic diagram, 126
testing, multimeter, 125
voltage at measurement, 130
voltage drop/across measurement, 131
Primary batteries, 82
Printed circuit board (PCB), 333
Prototyping and construction models, 348
Pushbuttons, 410R
Radio frequency (RF) controllers, 421
Rechargeable batteries, 25
Li-poly, 83
nickel-cadmium, 86
NiMH, 82
Regulators. See Voltage regulators
Relays, 417
Remote control, infrared, 414
Resistance, 102
interpretation, 103
manual-ranging meter, 104
measurements, 103
online resistance calculator, 105
Resistance measurement, multimeter, 33
Resistor networks, 409
Resistors
assortments, 99
components
tape bands, 101
wire cutter, 101
labeling and storing, 106
limiting power, 99
sandwich circuit board, 99
size and tolerance, 1009 V battery (cont.)