Monitoring temperature, humidity, and light using Node.js with Arduino Wi-Fi

In this part of the chapter, we will explain the code for the Wi-Fi shield with Arduino:

We define the number of variables; in this case we will monitor three variables (temperature, humidity, and light):

#define NUMBER_VARIABLES 3 

Here we have to include the library for the sensor:

#include "DHT.h" 

We define the pin for the sensor:

#define DHTPIN 7  
#define DHTTYPE DHT11 

We define the instance of the sensor:

DHT dht(DHTPIN, DHTTYPE); 

We import the libraries for the module:

#include <Adafruit_CC3000.h> 
#include <SPI.h> 
#include <CC3000_MDNS.h> 
#include <aREST.h> 

We define the pins for connecting the module:

using a breakout board 
#define ADAFRUIT_CC3000_IRQ   3 
#define ADAFRUIT_CC3000_VBAT  5 
#define ADAFRUIT_CC3000_CS    10 

We create the instance of the module that will be connected:

Adafruit_CC3000 cc3000 = Adafruit_CC3000...