1. Wearables at Scale
Deploying OSGi on an army of Cubie Trucks
Frank Lyaruu

2. About me
Frank Lyaruu
CTO at
Senior Technology Architect at
@lyaruu
11/17/14 2

3. About Dexels
• Est. 2001 based in Amsterdam
• Enterprise software for large
companies
• Heavily invested in OSGi
• Focused on sports and entertainment
11/17/14
3

4. About Dexels
• Est. 2013
• Joint venture with Dexels
• Custom hardware for large events
11/17/14
4

5. • Case study
• Hardware stack
• Software stack
• Development chain
• DEMO!
5

6. Tomorrowland

7. Tomorrowland

8. Tomorrowland 2014
Electronic music festival near Antwerp,
Belgium
• 2 weekends
• 8 stages
• ~100 hectares
• ~100k visitors a weekend
• ~ € 250 per ticket
11/17/14
8

9. Requirements

10. Requirements
Design a wristband to do:
• Access control
• Location
• Profiling / feedback
• Crowd monitoring
• Integrate with 3rd party applications
• Something that adds to the UX
11/17/14
10

11. Access control
• Should always work
• Should be secure
…simplicity is essential: Passive RFID
11/17/14
11

12. Location
• Ability to locate individuals
• Ability to locate security personnel
11/17/14
12

13. Profiling / feedback
• How do the visitors behave?
• What acts are popular?
11/17/14
13

14. Crowd monitoring
• Find hotspots in the flow of people
• Dashboard for security personnel
11/17/14
14

15. UX
• UX is key
• Comfortable
• Match the festival
• Suitable for non-nerds
11/17/14
15

16. The plan

17. The setup
• Set up base stations around the
terrain
• Wristbands will report status
• The base stations triangulate and
consolidate the data
• Visualize and push the data to other
applications
• Use regular passive RFID for access
11/17c/14ontrol
17

18. Something cool
• LED lights on the wristbands,
integrated with the light show
• A button to send Facebook friend
requests
11/17/14
18

19. The protocol
• Time slotted protocol
• All base stations synchronise with
each other
• Visitor bracelets send every few
minutes
• Staff bracelets send every few
seconds
11/17/14
19

20. Hardware

21. Hardware
• One 3V battery for 3 days
• Leather
• Branded for the festival
• < $10 per bracelet
11/17/14
21

22. Base station hardware
22

23. Base station
23

24. §
24

25. Hardware challenges

26. 11/17/14
26

27. Base stations
• Heat
• Rain
• Unreliable power
• Unreliable network
• Unstable mount points
• Electromagnetic interference
11/17/14
27

28. Base station deployment
28

29. Base stations
11/17/14
29

30. Sendrato Infrastructure
LLooccaal l“ “ddaattaacceennttrree””
HHaazzeelclcaasstt c clulusstteerr
11/17/14
33rrdd p paarrttyy
30
CCuubbieieTTrruucckk CCuubbieieTTrruucckk CCuubbieieTTrruucckk
CClolouudd
SSaaltlt M Maasstteerr
LLoogg s seerrvveerr
MMoonnggooDDbb MMoonnggooDDbb
SSuuppeerr c coooorrddininaattoorr
MMaannaaggeemmeenntt U UII

31. Base station software stack
11/17/14
31
AAppaacchhee F Feelilxix
JJaavvaa
FFeeddoorraa 2 200
SSaalltt aaggeenntt
SSeennddrraattoo A Apppplilcicaattioionn

32. Basestation software
BBaassee s sttaattioionn
FFilitlteerr e evveenntt PPuubblilsishh i nin c clulusstteerr
32
WWrrisisttbbaannddss
o
Radi
RRaaddioio D Drriviveerr OOSSGGi ie evveenntt
LLoogg l oloccaalllyly??
Radi
o

33. Logging
• Custom Logback appender to Redis
queue
• ElasticSearch analytics
• Kibana web interface
33

34. Salt Stack
• Configuration manager
• Remote execution
• Agent based
• Versatile & Fast
• Master running in the cloud
34

35. “Testing in production”

36. Development cycle
36
• Pretty crude but effective:
EEcclilpipssee MMaavveenn b buuilidld GGitit SSaaltlt FFilieleInInssttaallll

37. Future work
• Distributed OSGi
• More mature deployment model
• Apache Karaf + Cellar
• Pluggable network / clustering
• Proper 3rd party API
37

38. Demo

39. • http://youtu.be/eDZaea7OCd0 39

40. Thank you!
@Sendrato
sendrato.com
info@sendrato.com
40