Slides of my Alexa session at JavaLand in 2017. This session shows how you can use Alexa. For instance by buying standard hardware by Amazon like the Echo Dot, or building it yourself with a Raspberry Pi and an opensource Java application. Next to that I showed how to develop your own Alexa skills in Java and deploy them automatically with Maven to AWS Lambda. AWS Lambda is a serverless solution from Amazon.

1. WELCOME ALEXA, YOUR
PERSONAL ASSISTANT
J O H A N J A N S S E N , I N F O S U P P O RT
@ J O H A N J A N S S E N 4 2

3. CONTENT
• Internet ofThings
• Home automation
• Alexa
• openHAB
• Alexa skills
• Conclusion
• Questions

4. What’sThe Internet ofThings (IoT)

8. “The Infrastructure of the Information Society”
Global Standards Initiative on Internet ofThings (IoT-GSI)

9. What’s home automation?

11. What other things do we want to control?

12. DEMOTIME!

13. “A subset of IoT”
Joint Organisation for Herculean Alternative Networking (Johan)

14. Home automation challenges

22. DEMOTIME!

25. RASPBERRY PI
Official guide from Amazon
https://github.com/amzn/alexa-avs-raspberry-pi

26. DEMOTIME!

27. COMPARISON
ECHO
• $180
• Adapter
• Dual band wifi
• Mono speaker
• Wake on speaking
TAP
• $115
• Rechargable battery
• Single band wifi
• Stereo
• Wake on button
ECHO DOT
• $90
• Adapter
• Dual band wifi
• Stereo (weak)
• Wake on speaking

28. COMPARISON
RASPBERRY PI
• Around $80-$90
• Raspberry Pi 3
• Speaker
• Microphone
• Power adapter
• Cables
ECHO DOT
• $90
• Adapter
• Dual band wifi
• Stereo (weak)
• Wake on speaking
ECHO DOT 2
• $50
• Adapter
• Dual band wifi
• Stereo (weak)
• Wake on speaking

35. Alexa for home automation

36. DEMOTIME!

37. OPENHAB

38. OPENHAB DASHBOARD

39. OPENHAB FUNCTIONALITY

45. my

46. DEMOTIME!

48. •Retrieve information
•Control devices
•Call webservice
•Order pizza!

49. TWO TYPE OF SKILLS
•Custom skill
•Smart home skill

50. TALK TO ALEXA
Alexa ask/tell firstSkill hello
invocation name utterance

51. MAP UTTERANCE TO INTENT
MyFirstIntent hello
Intent utterance

52. DEPLOYING/RUNNING SKILLS
•AWS Lambda
–Java
–Node.js
–Python
•(Local) webservice

53. NORMAL AWS LAMBDA DEPLOYMENT

54. DEMOTIME!

57. NO ACCESS CONTROL
static {
System.setProperty("com.amazon.speech.speechlet.
servlet.disableRequestSignatureCheck", "true");
}

58. ACCESS CONTROL
private static final Set<String> supportedApplicationIds =
new HashSet<String>();
static {
supportedApplicationIds.add("amzn1.echo-sdk-ams.app.
[ see https://developer.amazon.com/ ]");
}

59. AWS LAMBDA AUTO DEPLOY

60. DEMOTIME!

61. GITHUB REPO’S
•Maven AWS Lambda integration
–https://github.com/johanjanssen/AlexaExamples
•Alexa Skills Kit Java
–https://github.com/amzn/alexa-skills-kit-java

62. ALEXA-HA SKILL

63. Disadvantages Alexa

71. Advantages Alexa

77. CONCLUSION
•Easy to integrate with other devices /
software
•Easy to program new features in Java
•You quickly get used to it
•Fun!

78. Johan Janssen, Info Support
@johanjanssen42