The document discusses the integration of IoT devices with wearables, emphasizing the potential of IoT to create a new generation of polymath developers capable of working across various fields of technology. It highlights the use of MQTT as a lightweight messaging protocol for efficient communication between devices and provides code examples for implementing these concepts in mobile applications. Additionally, it addresses the transformative impact of IoT on accessibility and user experience, particularly for individuals with disabilities.

1. Interact your Wearable and an
IoT Device
Jeff Prestes

2. About me…
@jeffprestes
github.com/jeffprestes
slideshare.net/jeffprestes
Developer Advocate
Java, PHP, JavaScript,
Android Developer
Football fan,
father and IoT Researcher

3. This is not IoT… (IMHO)
so cool.. but this is Robotics!!

4. And this is not new…
(who has gray hair can say… P)

5. Billions of devices, sensors, including mobile phones...
connected and exchanging data.

6. Server Side
Electronic
(sometimes mechanic
and sculptor on wood or iron)
Client/Desktop
Mobile
(Beacons e Weareables)
Operation Systems

7. Italian Polymath. What was da Vinci? Scientist?
Engineer? Mathematic? Painter? Sculptor?
Musician? Botanic? Anatomist?
Source: Wikipedia - http://en.wikipedia.org/wiki/Leonardo_da_Vinci
Could IoT bring us a broad vision
of Technology?
No more specialists…
But new Polymath Developers

8. Single Board Computers

10. Voice input data Vibrating Heart rate
Main Smart Watches Capabilities
from IoT Integration perspective

11. Help blind and handicap people to
perform simple tasks
Help people to get environment
important alerts
Makes some simple tasks faster and fun like to
do payments
Possibilities ?
What else?

12. Options to exchange data between
smartphone and IoT Device

13. ✔ Serial, easy, syncronized and realiable
✖ Tight to one device and need to pair to each
new Device
Bluetooth

14. ✔ Fast and strait-forward
✖ Verbose, complex and few reliable
Socket

15. ✔ Soft, reliable, bi-directional, simple
development, convenient (no pairing needed)
✖ No instantaneous
Message Queue via TCP

16. MQ Telemetry Transport is a light-weight
publish/subscribe messaging protocol
created by IBM and Arcon (Eurotech)
it’s an open standard! the most used one!
best to:
~ Where the network is expensive, has low bandwidth or is unreliable
~ When running on an embedded device with limited processor or
memory resources

17. Open a topic
Publish:
“It’s burning”
Subscribe
Receives
How it would works…
A Real Example for MQTT

18. Meteorologist project
in the UK

19. Now let’s get started to talk about good things…

21. Demo

22. How it works…

23. Watch purchase sequence screenshots
Notification
Action
Processing
Processs is done

24. GoogleApiClient mGoogleClient= new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.build();
ConnectionResult connectionResult =
mGoogleClient.blockingConnect(30, TimeUnit.SECONDS);
if (!connectionResult.isSuccess()) {
Log.e(TAG, "Failed to connect to GoogleApiClient.");
return;
}
PutDataMapRequest putDataMapRequest = PutDataMapRequest.create("/new/candies/beacon");
putDataMapRequest.getDataMap().putLong("DataStamp", System.currentTimeMillis());
putDataMapRequest.getDataMap().putString("content", message);
try {
Wearable.DataApi.putDataItem(mGoogleClient, putDataMapRequest.asPutDataRequest());
} catch (Exception ex) {
Log.e(Util.class.getSimpleName(), "Error when send message to watch", ex);
}
Smart Watch and Phone
They need to exchange data via message service
Code for the phone

25. public void onDataChanged(DataEventBuffer dataEvents) {
//super.onDataChanged(dataEvents);
setUpGoogleClientIfNeeded();
for(DataEvent event : dataEvents) {
if(event.getType() == DataEvent.TYPE_CHANGED) {
String message = Util.extractMessage(event,"/new/candies/beacon");
if(message != null && !Util.isForeground(getApplicationContext(), ”br.com.novatrix.candies")) {
Log.d(TAG, message);
Uri uri = Uri.parse(message);
Util.dispatchNotification(getApplicationContext(), uri);
return;
}
message = Util.extractMessage(event, "/candies/notification");
if(message != null && message.equalsIgnoreCase("cancel")) {
Util.cancelNotification(getApplicationContext());
}
}
}
}
Smart Watch and Mobile Phone
They need to exchange data via message service
Code for the watch

26. provides open source MQTT clients in several languages
(C for embedded, C++, Go, Java, Android, JavaScript, Python)
http://www.eclipse.org/paho/
under iot.eclipse.org project
sandbox available at: iot.eclipse.org:1883

27. String topic = "jeffprestes/candies/world";
int qos = 2;
String broker = ”iot.eclipse.org";
String clientId = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);
String port = "1883";
String queueUrl = "tcp://" + this.broker + ":" + this.port;
MemoryPersistence persistence = new MemoryPersistence();
client = new MqttClient(queueUrl, clientId, persistence);
IMqttToken conToken = client.connect(connOpts);
client.subscribe(TOPIC, 1);
Connecting to MQTT Server

28. String msgToMachine = "alive"
MqttMessage message = new MqttMessage(msgToMachine.getBytes());
message.setQos(qos);
try {
client.publish(topic, message);
} catch(MqttException e) {
Log.e("PublishingMQTT", e.getLocalizedMessage(), e)
}
Posting a message at queue

29. Electronic Schema

31. Thanks.
Jeff Prestes
@jeffprestes
Slideshare.com/jeffprestes
Github.com/jeffprestes
@braintree_dev
developer.paypal.com
developers.braintreepayments.com