This document discusses Internet of Things (IoT) technologies and protocols. It provides examples of smart IoT devices like a smart fork, toothbrush, air conditioner, bike, and hydroponic system. It then explains common IoT protocols like HTTP, MQTT, and CoAP. MQTT in particular is highlighted as a lightweight protocol suitable for IoT messaging. The document also discusses MQTT features like publishing, subscribing, retained messages, and presence. Finally, resources for learning more about MQTT are provided.

2. ณัฐ วีระวรรณ์
Software Developer (Maker / Mobile / Website / Game)

3. IoT Technology Review for
building a community

4. The internet of things?

5. The “Internet of things” elements
• Things
• Small Computer (MCU) +Sensors
• Connectivity & Communication
• Data
• Cloud Service (Intelligence)

7. HAPIfork
http://www.hapi.com/products-hapifork.asp
The HAPIfork is an electronic
fork that helps you monitor
and track your eating habits.
It also alerts you with the help
of indicator lights and gentle
vibrations when you are eating
too fast.

8. Smart Tooth Brush
http://www.beamtoothbrush.com/toothbrush/
The Beam Brush is a connected
toothbrush that engages users
with their daily hygiene routine.

9. Smart A/C
Aros learns from your budget,
location, schedule, and usage
to automatically maintain
the perfect temperature and
maximize savings for your home.
https://www.quirky.com/shop/752-aros-smart-window-air-conditioner

10. Smart Bike
Valour by Vanhawks gives
directions, reroutes to avoid
traffic, and tracks riding metrics.
http://www.vanhawks.com/

11. Hydroponic System
Niwa is the first fully automated
hydroponic system that attends
to all of your plants’ needs and
water them, feed them and make
sure they have optimal growing
conditions 24/7.
http://getniwa.com/

14. -
Smart Garbage Cans
BigBelly alerts when it needs to
be emptied so smarter collection
decisions can be made.
http://www.bigbelly.com/solutions/stations/smartbelly/

22. The Protocols

23. HTTP / MQTT / CoAP

24. HTTP: GET, POST,
PUT, DELETE

25. CoAP: GET, POST,
PUT, DELETE

26. MQTT

27. MQ-Telemetry
Transport

28. MQTT: PUBLISH,
SUBSCRIBE

29. LOW Bandwidth
HIGH Latency
UNRELIABLE
HIGH Cost
NETWORK

30. MQTT
A practical protocol for the Internet of Things
Bryan Boyd (IBM) @bryanboyd
Vehicles
Cows
Ovens
Pacemakers
Children
Smartphones

31. The Internet is (in) everything
- vehicles!
- children!
- cows!
- smartphones!
- ovens!
- pacemakers
Data source: IDC
212 BILLION
By the year 2020…
Total number of available
sensor enabled objects
30 BILLION
sensor enabled objects
connected to networks
57,000/sec
new objects connecting

32. - open open spec, standard 40+ client implementations
- lightweight minimal overhead efficient format tiny clients (kb) !
- reliable QoS for reliability on unreliable networks !
- simple 43-page spec connect + publish + subscribe
MQTT
Late 1990s Aug 2010 Nov 2011 Sep 2014
Invented Published Eclipse M2M Standard
a lightweight protocol for IoT messaging

33. MQTT bi-directional, async “push” communication
MQTT!
Broker
CONNECT to MQTT broker
SUBSCRIBE to thing3/data
CONNECT to MQTT broker
PUBLISH to thing3/data
recv
recv
pub
thing #3
thing #1
thing #2
TCP/IP
WebSocket

34. MQTT pub/sub decouples senders from receivers
MQTT!
Broker
Analytics
Mobile App
Database
car telemetry
tennis scores
sensor data
HTML5 App
Logger
group chat
publish subscribe

35. MQTT agnostic payload for flexible delivery
MQTT!
Broker
CONNECT
0101
pub
01010100110011100
PUBLISH to thing1/myBinary
{“id”:”thing1”,”lon”:-97.135198,
”lat”:94.19384,”status”:”I’m alive!”}
PUBLISH to thing1/myJSON
data:image/png;base64,A908SFIkjdf…
PUBLISH to thing1/myPicture
{ }
pub
:-)
pub

36. MQTT retained messages for last value caching
MQTT!
Broker
CONNECT,ID=thing1
PUBLISH,thing1/battery,{“value”:95},,RETAIN,,,
PUBLISH,thing1/battery,{“value”:94},,RETAIN,,,
PUBLISH,thing1/battery,{“value”:93},,RETAIN,,,
CONNECT,ID=thing2
SUBSCRIBE,thing1/battery
RETAIN,thing1/battery,{“value”:93},PUBLISH
DISCONNECT

37. MQTT last will and testament for presence
MQTT!
Broker
CONNECT,ID=thing2
SUBSCRIBE,thing1/status2
thing1/status,“Goodbye!”,PUBLISH
CONNECT,ID=thing1,LWT=thing1/status,“Bye!”
1
2
(client has network problem)
PINGREQ
PINGREQ
PINGRESP
PINGRESP
(KEEP_ALIVE seconds pass)

38. MQTT security
MQTT!
Broker
CONNECT with username / password
SSL/TLS TCP/IP
- MQTT spec doesn’t define security model aside from
username/password authorization on connection
- Brokers *can* implement support for SSL/TLS and
policies for connection and messaging
ex. organize topic space by “group”
username associated with a group
bboyd is in group “IBM” and can pub/sub IBM/bboyd/#

39. Resources
- MQTT home
- Eclipse Paho MQTT clients
- Mosquitto broker
- IBM MessageSight
- IBM IoT Foundation
- MQTT demos
- IBM Messaging Github
- IBM Redbook + PickMeUp
!
- Me!
MQTT.org
eclipse.org/paho
mosquitto.org
ibmdw.net/messaging/messagesight
internetofthings.ibmcloud.com
m2m.demos.ibm.com
github.com/ibm-messaging
github.com/ibm-messaging/mqtt-PickMeUp
!
Bryan Boyd (IBM) @bryanboyd
(coming soon)

41. thaiopensource.org

43. fcfd18fe34db3b985ccf7f09cb3f30fffa01
0103c4090000540b0000e7030000310
5000008627564647930303100000000
0000000000000000000000000090d0a

49. Thingspeak

57. open-source embedded operating system for low-power
connected microcontrollers.

59. Thank you ( :