Md. Khairul Alam
Published © CC BY

AWS Emergency Notifier

It notifies through email or sms when emergency situation occurs.

IntermediateFull instructions provided1,528
AWS Emergency Notifier

Things used in this project

Hardware components

Intel Edison
Intel Edison
×1
SparkFun Block for Intel® Edison - Arduino
SparkFun Block for Intel® Edison - Arduino
×1
Temperature Sensor
Temperature Sensor
×1
DHT22 Temperature Sensor
DHT22 Temperature Sensor
×1

Software apps and online services

AWS IoT
Amazon Web Services AWS IoT
AWS SNS
Amazon Web Services AWS SNS
AWS IAM
Amazon Web Services AWS IAM
Intel XDK IoT Edition

Story

Read more

Schematics

Temperature/Humidity Notifier Circuit

Intel Edison, HSM-20G T/H Sensor
H t notofier bb

Fritzing Source

Code

JavaScript Source Code

JavaScript
This code is for Intel Edison to publish notification to Amazon SNS
/*

MRAA - Low Level Skeleton Library for Communication on GNU/Linux platforms
Library in C/C++ to interface with Galileo & other Intel platforms, in a structured and sane API with port nanmes/numbering that match boards & with bindings to javascript & python.

Steps for installing MRAA & UPM Library on Intel IoT Platform with IoTDevKit Linux* image
Using a ssh client: 
1. echo "src maa-upm http://iotdk.intel.com/repos/1.1/intelgalactic" > /etc/opkg/intel-iotdk.conf
2. opkg update
3. opkg upgrade

*/
var awsIot = require('aws-iot-device-sdk'); //require for aws iot 
var mraa = require('mraa'); //require mraa for analog/digital read/write
console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the console

var myThingName = 'raspberry-pi';

var thingShadows = awsIot.thingShadow({
   keyPath: './b91fc77cfb-private.pem.key',
  certPath: './b91fc77cfb-certificate.pem.crt',
    caPath: './rootCA.pem',
  clientId: myThingName,
    region: 'us-west-2'
});

mythingstate = {
  "state": {
    "reported": {
      "ip": "unknown"
    }
  }
}

var networkInterfaces = require( 'os' ).networkInterfaces( );
mythingstate["state"]["reported"]["ip"] = networkInterfaces['wlan0'][0]['address'];

var temperaturePin = new mraa.Aio(2); //setup access analog input Analog pin #2 (A2)
var humidityPin = new mraa.Aio(1); //setup access analog input Analog pin #1 (A1)
var temperatureValue = temperaturePin.read(); //read the value of the analog pin
var humidityValue = humidityPin.read();
console.log(temperatureValue); //write the value of the analog pin to the console
console.log(humidityValue);

// calculate humidity
var humVoltage = ((humidityValue*5.0)/1023.0);
var humidity = (3.71*Math.pow(humVoltage,3))-(20.65*Math.pow(humVoltage,2))+(64.81*humVoltage)-27.44;
console.log(humidity);

// calculate temperature
var tmpVoltage = ((temperatureValue*5.0)/1023.0); // convert analog value to voltage
var temperature = (5.26*Math.pow(tmpVoltage,3))-(27.34*Math.pow(tmpVoltage,2))+(68.87*tmpVoltage)-17.81;
console.log(temperature);


  thingShadows.on('connect', function() {
  console.log("Connected...");
  console.log("Registering...");
  thingShadows.register( myThingName );

  // An update right away causes a timeout error, so we wait about 2 seconds
  setTimeout( function() {
    console.log("Updating my IP address...");
    clientTokenIP = thingShadows.update(myThingName, mythingstate);
    console.log("Update:" + clientTokenIP);
  }, 2500 );


  // Code below just logs messages for info/debugging
  thingShadows.on('status',
    function(thingName, stat, clientToken, stateObject) {
       console.log('received '+stat+' on '+thingName+': '+
                   JSON.stringify(stateObject));
    });

  thingShadows.on('update',
      function(thingName, stateObject) {
         console.log('received update '+' on '+thingName+': '+
                     JSON.stringify(stateObject));
      });

  thingShadows.on('delta',
      function(thingName, stateObject) {
         console.log('received delta '+' on '+thingName+': '+
                     JSON.stringify(stateObject));
      });

  thingShadows.on('timeout',
      function(thingName, clientToken) {
         console.log('received timeout for '+ clientToken)
      });

  thingShadows
    .on('close', function() {
      console.log('close');
    });
  thingShadows
    .on('reconnect', function() {
      console.log('reconnect');
    });
  thingShadows
    .on('offline', function() {
      console.log('offline');
    });
  thingShadows
    .on('error', function(error) {
      console.log('error', error);
    });
	
  
  //Watch for temperature & humidity
if(temperature > 35 && humidity < 60){//SNS terget: arn:aws:sns:us-west-2:316723939866:TemperaturAlarm
   thingShadows.publish('arn:aws:sns:us-west-2:316723939866:TemperaturAlarm', 
                        'Your room temperature is greater than 35deg C');
   }
if(humidity > 60 && temperature < 35){
   thingShadows.publish('arn:aws:sns:us-west-2:316723939866:TemperaturAlarm', 
                        'Humidity is greater than 60% which is not desireable');
   }
if(humidity > 60 && temperature > 35){
   thingShadows.publish('arn:aws:sns:us-west-2:316723939866:TemperaturAlarm', 
                        'Both, Humidity & Temperature are in abnormal condition');
   }

});

Github repository

Credits

Md. Khairul Alam

Md. Khairul Alam

26 projects • 231 followers
Engineer, developer, maker, and hacker.

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