Air Quality Monitoring Node

A gadget is designed to measure the air quality index and uploads it on a web server where graphical trends in AQI value can be seen

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Air Quality Monitoring Node

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Code

Air quality monitoring

Arduino
Code updates the data on ubidots server
#ifndef __CC3200R1M1RGC__
// Do not include SPI for CC3200 LaunchPad
#include <SPI.h>
int sensorValue;
#endif
#include <WiFi.h>
char ssid[] = "R2P";
// your network password
char password[] = "8700217023";



char* TOKEN = "BBFF-pffKMwicvNd0O3ZSlt5CDai5pZ2m7C"; // Put here your TOKEN

char* DEVICE_LABEL = "aqim"; // Your Device label

/* Put here your variable's labels*/
char const * VARIABLE_LABEL_1 = "aqi";

/* HTTP Settings */
char const * HTTPSERVER = "industrial.api.ubidots.com";
const int HTTPPORT = 80;
char const * USER_AGENT = "Arduino_Ethernet";
char const * VERSION = "1.0";

WiFiClient clientUbi;

/********************************
 * Auxiliar Functions
 *******************************/

void SendToUbidots(String payload) {

  int contentLength =payload.length();

  /* Connecting the client */
  clientUbi.connect(HTTPSERVER, HTTPPORT);

  if (clientUbi.connected( )) {
	/* Builds the request POST - Please reference this link to know all the request's structures https://ubidots.com/docs/api/ */
	clientUbi.print(F("POST /api/v1.6/devices/"));
	clientUbi.print(DEVICE_LABEL);
	clientUbi.print(F(" HTTP/1.1\r\n"));
	clientUbi.print(F("Host: "));
	clientUbi.print(HTTPSERVER);
	clientUbi.print(F("\r\n"));
	clientUbi.print(F("User-Agent: "));
	clientUbi.print(USER_AGENT);
	clientUbi.print(F("/"));
	clientUbi.print(VERSION);
	clientUbi.print(F("\r\n"));
	clientUbi.print(F("X-Auth-Token: "));
	clientUbi.print(TOKEN);
	clientUbi.print(F("\r\n"));
	clientUbi.print(F("Connection: close\r\n"));
	clientUbi.print(F("Content-Type: application/json\r\n"));
	clientUbi.print(F("Content-Length: "));
	clientUbi.print(contentLength);
	clientUbi.print(F("\r\n\r\n"));
	clientUbi.print(payload);
	clientUbi.print(F("\r\n"));

	Serial.println(F("Making request to Ubidots:\n"));
	Serial.print("POST /api/v1.6/devices/");
	Serial.print(DEVICE_LABEL);
	Serial.print(" HTTP/1.1\r\n");
	Serial.print("Host: ");
	Serial.print(HTTPSERVER);
	Serial.print("\r\n");
	Serial.print("User-Agent: ");
	Serial.print(USER_AGENT);
	Serial.print("/");
	Serial.print(VERSION);
	Serial.print("\r\n");
	Serial.print("X-Auth-Token: ");
	Serial.print(TOKEN);
	Serial.print("\r\n");
	Serial.print("Connection: close\r\n");
	Serial.print("Content-Type: application/json\r\n");
	Serial.print("Content-Length: ");
	Serial.print(contentLength);
	Serial.print("\r\n\r\n");
	Serial.print(payload);
	Serial.print("\r\n");
  } else {
	Serial.println("Connection Failed ubidots - Try Again");
  }

  /* Reach timeout when the server is unavailable */
  int timeout = 0;
  while (!clientUbi.available() && timeout < 5000) {
	timeout++;
	delay(1);
	if (timeout >= 5000) {
  	Serial.println(F("Error, max timeout reached"));
  	break;
	}
  }

  /* Reads the response from the server */
  Serial.println(F("\nUbidots' Server response:\n"));
  while (clientUbi.available()) {
	char c = clientUbi.read();
	Serial.print(c); // Uncomment this line to visualize the response on the Serial Monitor
  }

  /* Disconnecting the client */
  clientUbi.stop();
}

void setup() {
  Serial.begin(9600);
  //Initialize serial and wait for port to open:
  Serial.begin(115200);

  // attempt to connect to Wifi network:
  Serial.print("Attempting to connect to Network named: ");
  // print the network name (SSID);
  Serial.println(ssid);
  // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
  WiFi.begin(ssid, password);
  while ( WiFi.status() != WL_CONNECTED) {
	// print dots while we wait to connect
	Serial.print(".");
	delay(300);
  }
 
  Serial.println("\nYou're connected to the network");
  Serial.println("Waiting for an ip address");
 
  while (WiFi.localIP() == INADDR_NONE) {
	// print dots while we wait for an ip addresss
	Serial.print(".");
	delay(300);
  }

  Serial.println("\nIP Address obtained");
  printWifiStatus();

  Serial.println("\nStarting connection to server...");
  // if you get a connection, report back via serial:
  }


void loop() {
sensorValue = analogRead(6);   	// read analog input pin 0
Serial.print("AirQua=");
Serial.print(sensorValue, DEC);           	// prints the value read
Serial.println(" PPM");
  // if there are incoming bytes available
  // from the server, read them and print them:
   char payload[200];
  char str_val_1[30];

  /*---- Simulates the values of the sensors -----*/
 // float sensor_value_1 = random(0, 1000)*1.0;

 
  delay(100);
String s="";
s=s+"{\"aqi\":{\"value\":";
s=s+sensorValue;
s=s+"}}";

SendToUbidots(s);

delay(100);
}


void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}

Credits

Dr. Umesh Dutta

Dr. Umesh Dutta

38 projects • 56 followers
Working as Director of Innovation Centre at Manav Rachna, India. I am into development for the last 12 years.
Texas Instruments University Program

Texas Instruments University Program

91 projects • 120 followers
TI helps students discover what's possible to engineer their future.
Energia

Energia

34 projects • 26 followers
Founder of @energiaproject
Prince

Prince

1 project • 1 follower

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