MQTT its the protocol of the Internet of Things (IoT) - so I went on a quest to understand n how MQTT works with devices, sensors and the Internet of Things cloud. To do this, I built a scenario to see if I could get some of my devices to communicate with the IBM IoT Foundation and visualized the sensor data in a graph using a local application on my Notebook. 1st couple of slides show how to connect nest than i wend on to connect my Android Phone and Google Glass.

1. How MQTT can connect devices to the IoT
Markus van Kempen
E: mvk@ca.ibm.com
T: @markusvankempen

2. How MQTT protocol can connect devices to the Internet of Things (#IoT)
- What is MQTT?
-MQTT is a lightweight messaging protocol that supports publish/subscribe
- http://mqtt.org/
- How can it be used to talk to devices?
- How does MQTT work with IoT?
- Other scenarios
-Connecting Android Device to the IoT Cloud
-Connecting GOOGLE GLASS to the IoT Cloud

3. Choice of Sensors and devices

4. Internet
Scenario overview using MQTT
Publish Hosts messages
Proxy MQTT Client
IoT Cloud / MQTT Broker
Topic: iot-2/type/laptoplan/id/Deviceid/evt/+/fmt/json

5. 1) Get Data from a Sensor e.g Nest
Pull
I am using node (js) and the unofficial nest api

6. 2) Sign up or use a IoT broker
You can use Ibm IoT Cloud
https://internetofthings.ibmcloud.com/#/
Or open source broker like Mosquitto
See mqtt.org for more infos

7. 3) Publish/Send Data via mqtt from you device sensor to IOT cloud / mqtt broker
Publish
client.publish('iot-2/evt/MVK/fmt/json', JSON.stringify(data), function() {});
d": {
"myName": "Markus Infos",
“targettemp" : 72, currenttem 70
}
};

8. 4) Use a mqtt client to subscribe or publish to the broker
There is lots of Mqtt client out there like mqtt.js or a eclipse paho
Subscribe
iot-2/type/mvk-laptoplan/id/00-21-CC-C8-6F-1B/evt/+/fmt/json

9. 5) Subscribe to broker (IoT Cloud) with a mqtt client to visualize the data
Subscribe
iot-2/type/mvk-laptoplan/id/00-21-CC-C8-6F-1B/evt/+/fmt/json
{"d":
{"myName":"Nest Data",
"deviceName":"Bedroom“,
"currentTemp":20.93,“
targetTemp":20}}

10. 6) Implement a command which the device reacts to
{
"d": {
"myName": "Paho client",
"TargetTemp": 72
}
}
iot-2/type/mvk-laptoplan/id/00-21-CC-C8-6F-1B/cmd/MVK/fmt/json
Publish

11. Full Scenario overview using mqtt
Data Publish
Subscribe/
Notify of evt & cmd
CMDPublish
Nest / Proxy
#1 Mqtt Client
#2 Mqtt Client
Visual Display
Distributes
Messages to
subscribers

12. MQTT Client and IoT Cloud
Publish
Distributes
Messages to
subscribers
Subscribe/
Notify of event & cmd
{"d":
{"myName":”Data",
“clientName":“paho“,
“Data":”Hello” ….}}
Publish / Subscribe to Topic iot-2/type/laptoplan/id/Deviceid/evt/+/fmt/json

13. References
MQTT
http://mqtt.org/
http://Mosquitto.org
Github
https://github.com/markusvankempen/SendNestDatatoIBMIoTCloud
IBM IoT Cloud
https://internetofthings.ibmcloud.com/
Quickstarter
https://developers.google.com/+/quickstart/android
Youtube:
https://www.youtube.com/watch?v=jm2oCSilIvU
My blog
http://markusvankempen.tumblr.com/

14. Markus van Kempen – EA Architect
Innovating with People and Technology
email: mvk@ca.ibm.com
Twitter: @markusvankempen
Hashtag: #MVK

15. How MQTT can connect ANDIORD to the IoT
Markus van Kempen
E: mvk@ca.ibm.com
T: @markusvankempen

17. https://github.com/ibm-messaging/iot-starter-for-android

18. Internet
Publish Hosts messages
IoT Cloud / MQTT Broker
Topic: iot-2/evt/accel/fmt/json
Android
Visualization
On Laptop
Scenario overview using Android App
with MQTT and IBM IoT
json Message
{ "d": {"myName":"MVK Nexus Accelerometer",
"acceleration_x":0.0, ,,,,,,} }

19. MQTT Client and IoT Cloud
Publish Distributes
Messages to
subscribers
{"d":
{"myName":”Data",
“text":“Hello Phone “,
….}}
Publish to device iot-2/type/MYNEXUS/id/8c705ae36b0c/cmd/alert/fmt/json
Subscribe/
Notifyofevent&cmd

20. References
Code:
https://github.com/markusvankempen/IBMIotForAndriod
YouTube:
https://www.youtube.com/watch?v=PvFtxS8pO0Y
https://github.com/ibm-messaging/iot-starter-for-android

21. How MQTT can connect GLASS to the IoT
Markus van Kempen
E: mvk@ca.ibm.com
T: @markusvankempen

22. Internet
Publish Hosts messages
IoT Cloud / MQTT Broker
Topic: iot-2/evt/status/fmt/json
Google GLASS
QuickStart
Visualization
Scenario overview using GLASS MQTT and IBM IoT
json Message
{
"d": {
"myName": “MVK GLASS",
“direction”: “Left”,
"x": 1000,
“y": 1000,
“z": 1000
}
}

23. MQTT Client and IoT Cloud
Publish
Distributes
Messages to
subscribers
Subscribe/
Notify of event & cmd
{"d":
{"myName":”Data",
“clientName":“paho“,
“Data":”Hello” ….}}
Publish / Subscribe to Topic iot-2/type/Name/id/Deviceid/evt/+/fmt/json

24. References
YouTube:
https://www.youtube.com/watch?v=pzUetPjTfCk
Code:
https://github.com/markusvankempen/GoogleGlass-LiveCard-Mqtt-to-IBMIot

25. Markus van Kempen – EA Architect
Innovating with People and Technology
email: mvk@ca.ibm.com
Twitter: @markusvankempen
Hashtag: #MVK