Building Arduino Projects for the Internet of Things

■ INDEX

GPS coordinates , 206

Internet connectivity

(Wireless) , 206

standard functions , 209

„ M

MQTT protocols
intrusion detection system , 43
AndroidManifest.xml , 105
Android project , 96
callback method , 102
class creation , 99
code completion , 100–102
connectToMQTT() method , 102
createNotifi cation and
updateView methods , 102
default code , 100
dialog box , 98
imported fi les , 98
libraries , 96
module option , 99
onCreate() method , 102–105
resolve dependencies , 97
service library , 98
top-level package , 99
remote controls , 44
source code
callback() function , 46
data publishes and subscribes , 45
external libraries , 45
Internet , 45
sections , 45
setup() and loop() functions , 46
standard functions , 46

„ N, O

Node-RED
circuit
circuit diagram , 54–55
light sensor tween system , 54
components , 52
development environment , 51
fl ow
default view , 57
function node , 61–62, 65
HTTP node , 69
HTTP request node , 60
input nodes , 57–58

output nodes , 57, 59

properties dialog box , 59–60

switch node , 63–64

tasks , 56

terminal window , 56

tweet node , 66

Twitter credentials , 66–68

hardware components

requirement , 53

IoT applications , 51

light sensor tweet system , 52

log messages , 72

objectives , 53

software requirement , 54

source code

data publication , 70–71

external libraries , 69

Internet connectivity , 70

read sensor data , 70

sections , 69

standard functions , 72

Node-RED fl ow

deploy button , 235

fl ow creation , 230

MQTT

broker node , 232–233

confi guration , 232

Email node , 233

input node , 231

node properties , 231

rename fl ow sheet , 231

updated email node

properties , 234–235

„ P, Q

printConnectionInformation()

function , 19

publishToMQTT() method , 130

„ R

readSensorData() function , 70

Remote lighting controls , 44

„ S

Smarter parking system , 139

circuit

diagram , 142–143

requirements , 141

Livestock tracking system (cont.)