Learning Objectives: - Understand how IoT is transforming home automation and how you can use it to your advantage - Learn how the AWS IoT service suite can be used in smart home devices with Alexa integration - Learn how Hunter Douglas used AWS IoT and Alexa to build a new innovative product

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Introduction To The
Connected Home
AWS IoT + Amazon Alexa
Martin Sirull
06.22.18

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Connected Home Market
433 million
smart home devices were
shipped worldwide in 2017
from the previous year
27.6%
18.5%
IDC estimates a CAGR of
devices shipped in 2022
940 million
as the market grows to

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Challenges in the Market
Differentiation in a
crowded market
Slow incubation to
production cycle
Inconsistent platforms
across BUs
Need of a reliable
& scalable cloud
infrastructure
Edge-based computing
need for local connectivity
Secure connection

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Home Automation
Trends
Integration with
voice control
Interoperability
between devices
Exciting & new
customer experience
Customer
ease of use
Quick
response time
Energy
management

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Home Automation
Why Use AWS IoT Cloud Services?
Reliable & persistent communication
Responsiveness
Device management
Device insights
Low total cost of ownership
AWS IoT
Core
AWS IoT
Device
Management
AWS IoT
Analytics

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About Hunter Douglas
• World leader in custom window
treatments
• >50% market share
• Luxury brand
• Family owned and operated
• >65 years of innovations in window
fashions
• 15+ years of motorized shades

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PowerView® Motorized Shades
• Launched 2015
• Smart and Integrated
• IoT Connected
• Provide:
• Comfort
• Convenience
• Security
• Energy savings
Evolution of motorized shades:
IR remote > RF remote > Local app >
remote app > cloud integration and voice control

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Initial Design
In the home
Initial Concept
User in their home using their Smart phone to:
• Control their shades
• Create scenes
• Set scene schedules

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Initial Design
Outside the home
• Hub checks into Remote Server on an
interval.
• Smart phone sends request to
Remote Server.
https
https
Remote Server

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IoT to the Rescue
Outside the home
Using Amazon IoT
services and MQTT client,
we have reduced server
load and increased
response times.
Remote Server
AWS IoT Core

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Registration
Generate CertificateRequest Certificates
Create
Certificate API
Add device to user profile
Return Certificate
Validate Device Ownership
Create Thing/Policy
and Attach Certificate
Update Certificate ID
Device without pre-installed
CA-signed certificate
IoT Core
Mobile App
RDS Database
for User Profile
IoT
Policy
IoT
Certificate
IoT
Thing
& &
Remote
Server
Register User / Authenticate to HD Cloud

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Registration
1
2
3
4
3. Create Thing
Create Certificate
Link Certificate
Link Policy
Remote Server AWS IoT Core
1. App Send Registration
Request
5
2. Hub Sends Request
4. Return Certificate5. Return Certificate

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Registration – Instantiate AWS IoT Client
//Get HTTP IoT Client
public AWSIotClient getHTTPIoTClient(){
ClientConfiguration clientConfig = new ClientConfiguration();
clientConfig.setProtocol(Protocol.HTTPS);
BasicAWSCredentials awsCreds = new BasicAWSCredentials(iamAccessKeyId, iamSecretKey);
AWSIotClient iotHTTPClient = (AWSIotClient) AWSIotClientBuilder.standard()
.withClientConfiguration(clientConfig)
.withCredentials(new AWSStaticCredentialsProvider(awsCreds))
.withRegion(awsRegionId).build();
return iotHTTPClient;
}

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Registration – Create IoT Thing
//Create IoT Thing
CreateThingRequest createThingRequest = new CreateThingRequest().withThingName(deviceSerial);
CreateThingResult createThingResult = iotHTTPClient.createThing(createThingRequest);
/*
Successfully created thing with name: createThingResult.getThingName()
with arn: createThingResult.getThingArn()
*/

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Registration – Generate Certs For Thing
//Generate x.509 certificates for device authentication
//Set flag to create active certificate.
CreateKeysAndCertificateRequest ckacreq = new CreateKeysAndCertificateRequest().withSetAsActive(true);
CreateKeysAndCertificateResult ckacres = iotHTTPClient.createKeysAndCertificate(ckacreq);
//Never expose these values in logs outside of demo purposes!
System.out.println("Certificate for " + deviceSerial);
System.out.println("PEM: " + ckacres.getCertificatePem());
System.out.println("Private Key: " + ckacres.getKeyPair().getPrivateKey());
System.out.println("Public Key: " + ckacres.getKeyPair().getPublicKey());

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Registration – Pre Defined Policy
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "iot:Connect",
"Resource": "arn:aws:iot:us-east-1:434312738679:client/${iot:Connection.Thing.ThingName}"
},
{
"Effect": "Allow",
"Action": "iot:Subscribe",
"Resource": "arn:aws:iot:us-east-1:434312738679:topicfilter/actions/${iot:Connection.Thing.ThingName}"
},
{
"Effect": "Allow",
"Action": "iot:Publish",
"Resource": "arn:aws:iot:us-east-1:434312738679:topic/actionStatus/${iot:Connection.Thing.ThingName}"
},
{
"Effect": "Allow",
"Action": "iot:Receive",
"Resource": "arn:aws:iot:us-east-1:434312738679:topic/actions/${iot:Connection.Thing.ThingName}"
}
]
}

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Registration – Attach Policy to Certificate
//Attach connection/publish/subscribe policy to this certificate to ensure that device can only
//connect as the attached user and can only talk/listen on designated channels
AttachPrincipalPolicyRequest appreq = new AttachPrincipalPolicyRequest()
.withPolicyName(devicePolicyName)
.withPrincipal(ckacres.getCertificateArn());
iotHTTPClient.attachPrincipalPolicy(appreq);

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Registration – Attach Certs to Thing
//Attach thing to generated certificate ARN
AttachThingPrincipalRequest atpreq = new AttachThingPrincipalRequest()
.withThingName(deviceSerial)
.withPrincipal(ckacres.getCertificateArn());
iotHTTPClient.attachThingPrincipal(atpreq);

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Operation
Hub Subscribes to an Actions Topic and
publishes to an Action Status Topic
Server Subscribes to all Actions Status Topics
and publishes to all Action Topics
Existing REST
Remote Server
AWS IoT Core

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Operation – Receive Message
//Create a topic object
public class DemoIoTActionTopic extends AWSIotTopic{
public DemoIoTActionTopic(String topic, AWSIotQos qos){
super(topic, qos);
}
//this callback runs when a message comes in on the subscribed topic
@Override
public void onMessage(AWSIotMessage message) {
System.out.println("got action message: " + message);
}
}

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Operation – Subscribe to Topic
//Subscribe to actions topic
public static void subscribeToAWSIoTTopic(){
String subscriptionTopicURI = "/actions/" + deviceSerial;
try {
//Build Topic Object to subscribe to, with QOS1 (guaranteed delivery at least 1 time)
DemoIoTActionTopic subscriptionTopic = new DemoIoTActionTopic(subscriptionTopicURI, AWSIotQos.QOS1);
//subscribe to this topic
getMQTTClient().subscribe(subscriptionTopic);
} catch (AWSIotException e) {
System.err.println("error subscribing to topic: " + subscriptionTopicURI);
e.printStackTrace();
}
}
public AWSIotMqttClient getMQTTClient(){
AWSIotMqttClient iotMqttClient = new AWSIotMqttClient(
awsRegionEndpointURL, mqttClientIdm, iamAccessKeyId, iamSecretKey);
return iotMqttClient;
}

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Operation – Message Publishing
//Publish a Message
public static void publishIoTMessage(String topicURI, String payload){
try {
AWSIotMessage message = new AWSIotMessage(topicURI, AWSIotQos.QOS1, payload);
getMQTTClient().publish(message);
} catch (AWSIotException e) {
System.err.println("error publishing to topic: [" + topicURI + "] json: [" + payload + "]" );
e.printStackTrace();
}
}

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3rd Party Integrations
Hub Subscribes to an Actions Topic and
publishes to an Action Status Topic
Server Subscribes to all Actions Status Topics
and publishes to all Action Topics
AWS IoT Core
Remote Server

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3rd Party Integrations - Alexa
Directive Request from
Skill
Device
AWS IoT
Core
Alexa
Services
Remote
Server
Lamda
Function
RDS Database
Publish to Action Topics and
Subscribe to Action Status Topics
Subscribe to Action Topics Publish
to Action Status Topics

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3rd Party Integrations - Alexa
Alexa Smart
Home Service
Remote Server
AWS IoT Core
Lambda

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Benefits of Using AWS IoT
• Improved Performance
• Lower Latency
• Reduced Infrastructure
• Lower Cost
• Scalability

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Home Automation
Why Use AWS IoT Edge Services?
Built-in connectivity
Device security
Local communication
Offline communication
Over-the-air updates
Local Compute

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Home Automation
Example
AWS Greengrass can
run on a home gateway
so that the lighting
system, TV, and Echo
continue to operate
even if connection to
the cloud is lost.
Smart TVs can connect to AWS
IoT Core to take advantage of a
fully scalable cloud backend
that provides easy integration
with Alexa.
Amazon FreeRTOS provides
security, connectivity, and
updateability for devices
running on microcontrollers,
like a light bulb so it can
respond to voice commands.
AWS IoT Device Management,
AWS IoT Device Defender,
and AWS IoT Analytics
provide added benefits once
devices are connected.

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AWS IoT in the Connected Home

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Why AWS IoT for Connected Home—Summary
Deep edge services
Scalable, responsive, and reliable
Device management & data-driven insights
Built-in security and anomaly detection
Pay as you go pricing
1
2
3
Seamless Integration with Amazon/AWS Services

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Thank you!