Alexa Smart Home SkillJAWS-UG IoT 専門支部IoT サロン 2016-11合同開催スペシャル

@sparkgene市川 純 (Jun Ichikawa)

favorite services ：Route 53 、 Lambda 、 AWS IoT

Recruit Marketing Partnersinfrastructure engineer

Alexa Skill types• Custom Interaction Model(Custom

Skill)

• Smart Home Skill

• Flash Briefing Skill

Custom Skill• Build a skill with a custom interaction

model

• Customers say invocation name to use it. “Alexa, ask Uber to request a ride”

• Most flexible, but most complex to customers.

Smart Home Skill• Easy to use for customer.

• Customers say “Alexa, turn on living room lights”

• This skill is for cloud connected smart home devices.

Flash Briefing Skill• It can be integrated into "Alexa Flash

Briefing”

• Customers can simply ask “Alexa, what’s my Flash Briefing” to hear your content

• Currently Flash Briefing is only available for the English (U.S.) language

DIFFERENCEBETWEENCUSTOM SKILL

Custom Skill• design your own interaction model

• interaction name is required

• customer need to remember interaction name or invocation phrase

• you can use any server to host skill

Smart Home Skill• built-in interaction model

• natural utterances to control device

• Alexa need a grant permissions (OAuth) to retrieve device information and control device

• Skill must use AWS Lambda function

Mange devices on cloud

Customer need to register their devices to the device makers cloud.

On personal use, you don’t need to register devices. Just hard code in your lambda function.

HOW TO MAKE IT

Demo Video

https://youtu.be/nT20o2uv2h0

demo’s architecturethis slide explain

only here

see here to create custom skill version architecturehttps://www.hackster.io/sparkgene/alexa-makes-home-smarter-7e1981

Prerequisites to Smart Home Skill Development

• Amazon developer account– https://developer.amazon.com/

• AWS account• Knowledge of Java, Node.js, or

Python as Lambda functions can be written in any of these language

• A basic understanding of OAuth 2.0

Three steps to create Skill• Create “Login With Amazon”(LWA)

security profile

• register Smart Home Skills

• Create Lambda function

step-by-step article・ https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/steps-to-create-a-smart-home-skill・ http://qiita.com/sparkgene/items/055d7864c92a80b0c040

Create Login With Amazonhttps://developer.amazon.com/home.html

• enter “Allowed Return URLs” in the Web Settings after register skill Account Linking.

register Smart Home Skillshttps://developer.amazon.com/edw/home.html#/skill/create/

• Update “End point” after creating lambda function

Account Linkinghttps://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/steps-to-create-a-smart-home-skill#finish-registering-your-skill-in-the-developer-portal

• To finish registering your skill, you must configure OAuth 2.0 for your skill, which is used for account linking. You can use Login with Amazon or another provider for this section.

• Use “Redirect URL” to allow redirect at OAuth provider

Authoization URL:https://www.amazon.com/ap/oa?redirect_uri=https://pitangui.amazon.com/api/skill/link/<ID>

Create Lambda function• Alexa skill is only available on us-

east-1 and eu-west-1 region

• Node.js blue print is available– alexa-smart-home-skill-adapter

Smart Home Skill API• Smart Home Skill API communicate

with your skill(skill adapter) with same basic structure.

• Skill adapter directives contain two top-level objects– header– payload

"header": { "messageId": "6d6d6e14-8aee-473e-8c24-0d31ff9c17a2", "name": "DiscoverAppliancesRequest", "namespace": "Alexa.ConnectedHome.Discovery", "payloadVersion": "2”},"payload": { "accessToken": "OAuth Token here"}

header and payload

accessToken always include in request.use the access token to know who’s request.

DiscoverAppliancesRequestThe request come on• When you say “Alexa, discover

devices”

• hourly after your device register on Alexa (device health check)

{ "header": { "messageId": "6d6d6e14-8aee-473e-8c24-0d31ff9c17a2", "name": "DiscoverAppliancesRequest", "namespace": "Alexa.ConnectedHome.Discovery", "payloadVersion": "2" }, "payload": { "accessToken": "OAuth Token here" }}

DiscoverAppliancesResponse

{ "header": { "messageId": "ff746d98-ab02-4c9e-9d0d-b44711658414", "name": "DiscoverAppliancesResponse", "namespace": "Alexa.ConnectedHome.Discovery", "payloadVersion": "2" }, "payload": { "discoveredAppliances": [] }}

discoveredAppliances"discoveredAppliances": [ { "actions": [ ”turnOn", ”turnOff” ], "additionalApplianceDetails": { "extraDetail1": "optionalDetailForSkillAdapterToReferenceThisDevice” }, "applianceId": "unique Device Id", "friendlyDescription": "description that is shown to customer", "friendlyName": " Bedroom Light", "isReachable": true, "manufacturerName": "your Manufacturer Name", "modelName": "fancyThermostat", "version": "your software version number here." }]

The action which device support

actions• turnOff

– “Alexa, turn off the <device name>”• turnOn

– “Alexa, turn on the <device name>”• setTargetTemperature

– “Alexa, set the <room name> to <number> degrees”• incrementTargetTemperature

– “Alexa, increase the <device name> by <number> degrees”• decrementTargetTemperature

– “Alexa, decrease <device name> by <number> degrees”• setPercentage

– “Alexa, set <name> to <number> percent”• incrementPercentage

– “Alexa, increase <device name> by <number> percent”• decrementPercentage

– “Alexa, decrease <device name> by <number> percent”

TurnOnRequest{ "header": { "messageId": "01ebf625-0b89-4c4d-b3aa-32340e894688", "name": "TurnOnRequest", "namespace": "Alexa.ConnectedHome.Control", "payloadVersion": "2" }, "payload": { "accessToken": "[OAuth Token here]", "appliance": { "additionalApplianceDetails": {}, "applianceId": "[Device ID for Ceiling Fan]" } } }

TurnOnConfirmation { "header": { "messageId": "26fa11a8-accb-4f66-a272-8b1ff7abd722", "name": "TurnOnConfirmation", "namespace": "Alexa.ConnectedHome.Control", "payloadVersion": "2" }, "payload": {} }

Error Response• TargetOfflineError

– target device is not connected to the customer’s device cloud or is not on.• BridgeOfflineError

– target device is connected to a home automation hub or bridge, which is powered off.

• NoSuchTargetError– target device cannot be found, meaning it was never configured by the end-user.

• ExpiredAccessTokenError– the access token used for authentication has expired and is no longer valid.

• ValueOutOfRangeError– customer request would set a target value to a value out of its supported range.

• and more..

skill adapter should respond with the appropriate error type, and supporting information

ValueOutOfRangeError{ "header":{ "namespace":"Alexa.ConnectedHome.Control", "name":" ValueOutOfRangeError", "payloadVersion":"2", "messageId":"697fe957-c842-4545-a159-8a8c75fbe5bd" }, "payload":{ "minimumValue":15.0, "maximumValue":30.0 } }

DISCOVERY DEMO

- enable skill- Login with Amazon- discover device- Turn on request

Questions?

appendix• slide demo skill– https://github.com/sparkgene/

smart_home_skill/blob/master/aws_iot_device.py

• Raspbery Pi setup guide for the demo– https://www.hackster.io/sparkgene/

alexa-makes-home-smarter-7e1981