■ INDEXMaterial safety data sheets (MSDS), 20
Melting switches, 430
Metric screws, 356
Metric system, 51
Microchip MCP1826S, 5
Microcontrollers, 3
capabilities, 404
costs, 405
selection, 405
Microphone, 416
Micro snowplow robot, 423
Micro switches, 430
Mini IC hook, 92
Molex KK Connectors, 313
MOSFET chips, 9
Motherboard, robot’s electronics, 343.
See Line-following circuit
Motor checking
backward spin, 376
spin counter-clockwise, 375
test purposes, 375
Motors. See also Switches and motors
connectors, 313
coupler, 437
diodes, 310
heat-shrink tubing, 310
helping-hand tools, 307
preparing and attaching wires, 306
servos, 418–419
soldering experiences, 309
soldering iron, 308
wire and terminal soldering, 309
Motor tube
acetone, 360
cleaning label residue, 360
diameters, 362
hacksaw or rotary tool, 358
installation, 362
LEGO bricks, 361
M&M’s candy tube, 358
polypropylene, 361
sanding motor tube, 359
Multimeter, 31
blowing fuses of, 431
AC current, 42
AC voltage, 42
alligator connection testing, 96
analog meters, 32
auto power of, 36
autoranging, 35, 37
backlight, 39
capacitance, 34
component value checking, 59
continuity testing, 34, 93
counter, 40
data-auto mode, 40
data hold, 40
data interface, 39
DC current, 33
DC voltage, 33
digital bar graph, 40
digital meters, 32
digits, 33
diode, 34
DT-830B digital multimeter, 43
dual display, 38
duty cycle, 35
frequency, 34
fuses, 431
hook adaptors, 42–43
inductance, 38
limit mode, 41
logic mode, 40
maximum mode, 38
memory feature, 41
minimum mode, 38
9 V battery, 78
interpreting test results, 80
voltage testing setting up, 78
ofset mode, 41
open connection testing, 94
overload/fuse protection, 34
price comparison, 48
readable angle, 38
relative mode, 41
resistance, 33
rubber boot, 41
scope mode, 39
shorted connection testing, 95
sound mode, 40
stopwatch, 39
temperature, 40
test leads, 33
test probes, 32–33
transistor mode, 37
true RMS measurement, 42
unintended electrical connections, 96
VA38 meter, 46, 48
VC97 auto range digital multimeter, 45N
Negative power, 207
Negative voltage, 432
Nickel-cadmium (NiCad) batteries, 86
Nickel-metal hydride (NiMH) rechargeable
batteries, 82
Nickel-plated brass, 366
9 V battery
alkaline, 77, 84
carbon and zinc battery, 85
characteristics, 81