INDEX

SYMBOLS AND NUMBERS

&& (and) operator, 257

* characters, 61

{ }, 250

== (double equal sign), 252

// (double slash), 250

|| (or) operator, 257

? command, 143, 144, 148

~ (tilde), 254

+5V pin, 150, 151

28 Days Later (film), 7

A

A (amperes), 23

AA batteries, 25

AC (alternating current), 23–24

adapters for converting to DC, 24

battery chargers powered by, 25

inverters for converting DC to, 24, 49–50

voltage range, on multimeters, 242

Adafruit “Learn Arduino” series, 261

Adafruit PIR module, 77

Adafruit’s ARDX Experimenters Kit for Arduino, 224

adapters

for converting AC to DC, 24

USB, 48–49

Address Resolution Protocol (ARP), 100

aircraft, 10

alarm function, 77, 130, 136

alarms. See PIR (passive infrared) detector; quiet fire alarm; temperature ...

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