Team Noida Makers Space: Rishabh Banga, Priyanka Jain

Published December 20, 2015 © CC BY-NC-ND

Air Quality System Using LinkIt ONE and MCS

Monitor the temperature, humidity, pressure, air quality, dust particle concentration online & even detect fire using LinkIt ONE & sensors.

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Air Quality System Using LinkIt ONE and MCS

Things used in this project

Hardware components

Seeed Studio Grove Starter Kit for LinkIt ONE

Barometer Sensor, Dust Sensor, and Temperature and Humidity Sensor Pro. Air Quality Sensor I had lying around and is not a part of this kit.

Software apps and online services

Arduino IDE

LinkIT ONE SDK for Arduino

Story

Half of humanity now lives in cities, and within two decades, nearly 60 per cent of the world's people will be urban dwellers. Urban growth is most rapid in the developing world, where cities gain an average of 5 million residents every month. The exploding urban population growth creates unprecedented challenges, with one of the most severe environmental concerns being air pollution. We plan on creating an Air Quality Box, that will be a compact portable solution for monitoring Air quality as well as various other parameters like Temperature, Humidity, Dust Concentration, and Pressure, that can be accessed via Cloud.

We even want to go a step further ahead and integrate the functionality of Fire Detection as well as detecting levels of different gases present in the air, thereby making it completely sufficient for the purpose of monitoring air quality. This coupled with integrated cloud connectivity, will make data collection easier and hence readily available for analysis of multiple stations and data levels to determine pollution source across various cities and pockets in cities.

STEP 1: SETTING UP LinkIT ONE: SOFTWARE SETUP

Download Arduino 1.5.7 and then the latest SDK of LinkIT (I have 1.1.17). This will install all drivers needed and then you can try running a sample project from SDK to check if all is working well.

STEP 2: SETTING UP LinkIT ONE: HARDWARE SETUP

LinkIT ONE does not involve any major setting up, if you've installed the compatible softwares and drivers. Simply connect the board to your laptop and see if it's recognized and try out any example to check if it's working fine.

NOTE: Since this is a portable solution it can be easily be placed inside a small box/container and kept anywhere. For now we have used the Seeed Grove Kit Box for this purpose.

With all that done, make the connections and copy the code, edit it based on your WiFi settings,i.e SSID and Key and upload it on to the Arduino IDE.

NOTE: You can also store the key and SSID parameters of your WiFi in a separate file called WiFi.txt, store it inside the LinkIT ONE's storage and instruct the board to retrieve the credentials from there. The code for the same is out of scope from this project.

STEP 3: TESTING THE CODE

Open Serial Monitor and you'd be able to see a lot of different readings being displayed, namely - Humidity, Pressure, Dust concentration, and Air Quality. The LCD screen will display the Temperature in color coded format, i.e. In case of a relatively cool or cold temperature it'll display the temperature reading in Blue color and if hot, then in Red color.

For more information regarding how to setup the colored display in detail, refer to this - https://www.hackster.io/rishabhbanga/grove-starter-kit-with-intel-galileo-gen-1-getting-started-4dd5f1?ref=user&ref_id=9845&offset=3.

1 / 2 • Code uploaded with Temperature being detected and showing blue color to signify cool temperature.

STEP 4: PUTTING IT ON THE CLOUD

Next step is to integrate cloud connectivity and display all the present data being shown in Serial Monitor on the cloud, so that data can be accessible all the time and from any place.

Connect the WiFi attachment as follows

For this purpose I'd be using Mediatek's own cloud platform. The setup is described in two parts:

1) Creating a prototype, with data channels to control and monitor data.

2) Creating a test device to support the hardware connectivity and data transfer.

1 / 4 • caption (optional)

Humidity, Temperature, Altitude and Pressure values would start showing up as soon as you run your program. It's the Air Quality display and Dust Concentration that involves a bit of tweaking.

Each of those controls has a shortcut menu. Open the shortcut menu for data channel to select Show History option, which will display all pasta and present values of respective Data Channel.

1 / 2

STEP 5: FUTURE PLANS

1. Devise a compact case for ease of use and transportation.

2. Integrate an Alarm (Buzzer) that will go off in case of Fire.

3. Use AWS instead for Cloud Services.

Code

#include <LTask.h>
#include <LWifi.h>
#include <LWiFiClient.h>
#include <HttpClient.h>
#include <LDateTime.h>

#define WIFI_AP "" //WiFi SSID
#define WIFI_PASSWORD "" //WiFi Key
#define WIFI_AUTH LWIFI_WPA2 //Authentication Mode
#define per 50
#define per1 3
#define DEVICEID "" // Device ID given by cloud sandbox
#define DEVICEKEY "" //Device key given by cloud sandbox
#define SITE_URL "api.mediatek.com" //the site of the API


LWiFiClient c; //wifi client
LWiFiClient c2;
HttpClient http(c2); //http client
unsigned int rtc; //real-time clock
unsigned int lrtc;
unsigned int rtc1;
unsigned int lrtc1;
char port[4]="   ";
char connection_info[21]="                    ";
char ip[21]="              ";             
int portnum;
int val = 0;
String tcpdata = String(DEVICEID) + "," + String(DEVICEKEY) + ",0";

String TCPCMD_LED_ON = "LED_controller,1"; //tcp command to controll LED ON/OFF
String TCPCMD_LED_OFF = "LED_controller,0";

void setup() {
  //initialize
  Serial.begin(115200);
  LTask.begin();
  LWiFi.begin();
  Serial.println("Connecting to AP");
  while (0 == LWiFi.connect(WIFI_AP, LWiFiLoginInfo(WIFI_AUTH, WIFI_PASSWORD)))
    delay(1000);
  Serial.println("WiFi succeed");
  
  Serial.println("calling connection");
  while (!c2.connect(SITE_URL, 80))
    delay(1000);
  Serial.println("Connection to site succeed");
  
  getconnectInfo();
  Serial.println("getConnectionInfo succeed"); 
  
  connectTCP();
  Serial.println("connectTCP() succeed");
  
}

#include <Wire.h> //include wire library to enable Grove
#include <Barometer.h> //include library of Barometer sensor
#include <rgb_lcd.h>

Barometer myBarometer;


float humidity;
float temperature;
float pressure;
float atm;
float altitude;

Int colorR = 255;
Int colorG = 255;
Int colorB = 0;

void setup()
{
  myBarometer.init();
  pinMode(13, OUTPUT);
  lcd.begin(16, 2);
  lcd.setRGB(colorR, color G, colorB)
}

void loop() 
{
  
 
  int val = analogRead(pinTemp);
  float r = (float) (1023-val)*10000/val;
  humidity = 1/ (log(r/10000)/b+1/298.15);
  pressure = myBarometer.bmp085GetPressure(myBarometer.bmp085ReadUP());
  altitude = myBarometer.calcAltitude(pressure);  //calculate the ideal altitude
  //  atm = pressure / 101325;
  //print some information on serial monitor
  temperature = myBarometer.bmp085GetTemperature(myBarometer.bmp085ReadUT());
  
  if (temperature < 25)
  {
    colorR=0;
    colorG=0;
    colorB=255;
    lcd.setRGB(colorR, colorG, colorB);
    lcd.print("It's cool at: ");
    lcd.print(temperature);
  }
  
  else
  {
    colorR=255;
    colorG=0;
    colorB=0;
    lcd.setRGB(colorR, colorG, colorB);
    lcd.print("It's hot at: ");
    lcd.print(temperature);
  }
}

void uploadstatus(){
  //Uploading datapoint to MCS(Meditek Cloud Sandbox)
  Serial.println("calling connection");
  LWiFiClient c2;  
 
  char bufferH[5];
  char bufferT[5];
  char bufferA[7];
  char bufferP[7];
  
  sprintf(bufferH, "%.2f", humidity);
  sprintf(bufferT, "%.2f", temperature);
  sprintf(bufferA, "%.2f", altitude);
  sprintf(bufferP, "%.0f", pressure);
  
  String uploadHumidity = "humidity_display,," + String(bufferH);
  String uploadTemperature = "temperature_display,," + String(bufferT);
  String uploadAltitude = "altitude_display,," + String(bufferA);
  String uploadPressure = "pressure_display,," + String(bufferP);
  
  
  while (!c2.connect(SITE_URL, 80))
  {
    Serial.println("Re-Connecting to WebSite");
    delay(1000);
  }
  delay(100);
  if(digitalRead(13)==1)
    uploadLED = "LED_display,,1";
  else
    uploadLED = "LED_display,,0";
  
  String uploadData = uploadHumidity + "\n" +
                      uploadTemperature + "\n" + 
                      uploadAltitude + "\n" +
                      uploadPressure;
  
  HttpClient http(c2);
  c2.print("POST /mcs/v2/devices/");
  c2.print(DEVICEID);
  c2.println("/datapoints.csv HTTP/1.1");
  c2.print("Host: ");
  c2.println(SITE_URL);
  c2.print("deviceKey: ");
  c2.println(DEVICEKEY);
  c2.println("Content-Type: text/csv");
  c2.println("Connection: close");
  c2.println();
  c2.println(uploadData);
  //upload the data
  
  delay(500);

  int errorcount = 0;
  while (!c2.available())
  {
    Serial.print("waiting HTTP response: ");
    Serial.println(errorcount);
    errorcount += 1;
    if (errorcount > 10) 
    {
      c2.stop();
      Serial.println("uploadStatus failed");
      return;
    }
    delay(100);
  }

Credits

Rishabh Banga

12 projects • 135 followers

Intel Software Innovator | Microsoft Certified Professional | IoT Evangelist

Priyanka Jain

2 projects • 6 followers

Air Quality System Using LinkIt ONE and MCS

Things used in this project

Hardware components

Software apps and online services

Story

STEP 1: SETTING UP LinkIT ONE: SOFTWARE SETUP

STEP 2: SETTING UP LinkIT ONE: HARDWARE SETUP

STEP 3: TESTING THE CODE

STEP 4: PUTTING IT ON THE CLOUD

STEP 5: FUTURE PLANS

Schematics

Final Setup

Final Setup

Code

WiFi Connection

Grove Kit - Barometer and RGB LCD

Credits

Rishabh Banga

Priyanka Jain

Comments

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Air Quality System Using LinkIt ONE and MCS

Air Quality System Using LinkIt ONE and MCS

Things used in this project

Hardware components

Software apps and online services

Story

STEP 1: SETTING UP LinkIT ONE: SOFTWARE SETUP

STEP 2: SETTING UP LinkIT ONE: HARDWARE SETUP

STEP 3: TESTING THE CODE

STEP 4: PUTTING IT ON THE CLOUD

STEP 5: FUTURE PLANS

Schematics

Final Setup

Final Setup

Code

WiFi Connection

Grove Kit - Barometer and RGB LCD

Credits

Rishabh Banga

Priyanka Jain

Comments

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