Page 223 - Programming the Photon Getting Started With the Internet of Things
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FT2232H chip and, 118
port on Photon board, 4
powering Photon with, 119
powering shields with, 112
serial port settings, 15
User accounts:
claiming Photon in order to connect to, 15
registering for IFTTT account, 125
viewing account information, 25–26
User interface, controlling devices, 94–95
V
Variable resistors, 81
Variables:
Booleans, 36–37
creating for use with distance sensor, 107
in e-mail alert application, 132
floats, 35–36
local and global, 74
syntax, 33–35
using HTTP GET requests, 96–97
Verify, Particle Build functions, 22
VIN (5-V reference pin), connecting servo to Photon board, 65
void, in programming example, 32
Voltage (V):
header pins for, 9–10
measuring with multimeter, 147–148
output options, 47
Texas Instruments TXB-0108PWR for voltage translation, 111
Voltage divider circuits, 82–85, 98
