Published January 29, 2016 © CC BY

AWS Emergency Notifier

It notifies through email or sms when emergency situation occurs.

IntermediateFull instructions provided2,349

Things used in this project

Hardware components

SparkFun Block for Intel® Edison - Arduino

Temperature Sensor

DHT22 Temperature Sensor

Software apps and online services

Amazon Web Services AWS IoT

Amazon Web Services AWS SNS

Amazon Web Services AWS IAM

Intel XDK IoT Edition

Story

This project used Amazon Simple Notification Service (SNS), is a simple, fully-managed "push" messaging service that allows users to push texts, alerts or notifications, like an auto-reply message, notification of fire alarm. Thanks Amazon!

In this project I will use email and sms notification. The system will notify to subscribers when temperature or humidity crossed predefined threshold limit. You can use it for many purpose like fire notifier, rain notifier, you can use it as notifier if someone tries to enter your home, some movement occurred and so on. I used Intel Edison for the project.

Let's setup AWS environment first.

Set-up AWS IoT

i. Create an AWS account from the link: http://aws.amazon.com/

ii. Sign in to AWS Management console and from the Services select AWS IoT (Fig-1)

iii. Click on Get Started (Fig-2)

iv. Click on Create a thing (Fig-3)

v. Type a thing name (e.g. raspberry) & click to Create

A thing named raspberry will be created (Fig-5)

vi. Now, click to Create a certificate & then click 1-Click certificate create (Fig-6)

vii. Download all the keys & certificates, it will be required for connection with AWS IoT (Fig-7)

viii. To activate already created certificate, select particular certificate and then Activate it from the Actions menu (Fig-8)

ix. Now, you need to attach the thing to the certificate. To do it select the certificate and then Attach a thing from the Actions menu (Fig-9).

Type the thing name and click attach (Fig-10)

You can see details of thing on the right side as in screenshot by clicking on the thing name.

i. From the service click on SNS

ii. From the SNS Home click on Create Topic

iii. Type a Topic name & Display name(name show in sms and email) & then click on Create topic.

It should look like this

iv. Now click on Create Subscription

v. Set a protocol (Email) from the drop down menu

vi. Type the Email address to which you want to get the alert to Endpoint textbox & then click on Create Subscription

You will see PendingConfirmation message like this

vii. Don't panic, go to your Email, you will notice an email from AWS Notification.

viii. Open the email and click to Confirm subscription

You will get the confirmation message like this

Your pending subscription is now approved.

ix. You can test everything is working correctly or not. Click on Publish to topic

x. Type something to message box

xi. Click to Publish message

x. If you get following message then Congratulation!

Now, you need to create a rule from AWS IoT page.

Create a rule

i. Again go to AWS IoT page and click to Create a rule

ii. Fill up according to the following figure

iii. Choose SNS from Choose an action drop down box.

iv. Select TemperatureAlarm (created earlier) from SNS target box

v. Click on Create a new role

vi. Follow the role summary

vii. Click on Allow

viii. Click on Add action

ix. Click on Create

x. You can see the detail of created notification SNS Action

Set-up IAM Roles

i. From AWS Services click on IAM

ii. From the Dashboard select users and than click on Create New Users

iii. Enter an user name

iv. Click on Create

v. Save the Credentials

vi. Select the created user, go to Permissions tab & click on Attach Policy

vii. Select AmazonSNSFullAccess & AmazonIoTFullAccess

vii. Click on Attach Policy

viii. Policy is now attached

If you followed all the steps, AWS environment is completely ready to sent notification to your email. Now you need to setup your hardware which will sense the environment and publish message to SNS endpoint.

Setup your Intel Edison

The Edison is the powerful new computing module from Intel®. It’s versatile enough to manage internet-of-things applications, and powerful enough to control robotics platforms.

The Edison packs a host of features, including WiFi (802.11a/b/g/n), Bluetooth (4.0 and 2.1 EDR), UARTs, I2C, SPI, USB, and 40 GPIO. It’s driven by a 32-bit Intel® Atom™ Processor clocked at 500MHz, supported by 1GB of LPDDR3 RAM and 4GB eMMC flash memory. To top it off, it’s housed in a tiny, 35.5 x 25.0 x 3.9 mm module.

I am not going to cover the initial setup of Intel Edison board. Many tutorials are available in the Internet about the setup. You can follow An Absolute Beginners Guide To The Intel Edison which well cover how to get started with Edison and meet most of the requirement for starting Edison project. You can also follow the video link:

Before proceeding further be sure you have:

Connected The Edison to the Breakout Board
Installed The Required Drivers (FTDI Drivers, Edison Drivers)
Downloaded The Intel Arduino IDE and tested with Blink example
Flashed Your Edison with Yocto Linux Image
Setup WiFi
Upgraded the Edison Image
Ready to connect Edison with SSH

Build, Run & Test

Download the source from the Github repository, upload it to your Edison board and test the result. If temperature exceed from 35 degree Celsius it will trigger AWS SNS and SNS will sent you notification email.

Code

JavaScript Source Code

/*

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');
   }

});

Credits

Md. Khairul Alam

68 projects • 587 followers

Developer, Maker & Hardware Hacker. Currently working as a faculty at the University of Asia Pacific, Dhaka, Bangladesh.

AWS Emergency Notifier

Things used in this project

Hardware components

Software apps and online services

Story

Set-up AWS IoT

Create a rule

Set-up IAM Roles

Setup your Intel Edison

Build, Run & Test

Schematics

Temperature/Humidity Notifier Circuit

Fritzing Source

Code

JavaScript Source Code

Github repository

Credits

Md. Khairul Alam

Comments

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AWS Emergency Notifier

AWS Emergency Notifier

Things used in this project

Hardware components

Software apps and online services

Story

Set-up AWS IoT

Set-up AWS SNS

Create a rule

Set-up IAM Roles

Setup your Intel Edison

Build, Run & Test

Schematics

Temperature/Humidity Notifier Circuit

Fritzing Source

Code

JavaScript Source Code

Github repository

Credits

Md. Khairul Alam

Comments

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