Source code: https://github.com/andriyadi/FireSmartLamp Introduction to Firebase showing how Firebase can be a realtime backend for web app and IoT devices. I used this deck for GDG DevFest 2015 event in Surabaya and Jakarta.

2. Game DevFest 2015
Jakarta, Oct 17, 2015 | Surabaya, Oct 18, 2015
Firebase
Realtime backend for mobile app and IoT

3. Andri Yadi
@andri_yadi | a at dycode dot com
http://andriyadi.me | google.com/+AndriYadi

4. CEO of

5. Been coding in awesome
languages/Frameworks
for 18 years
QBasic, Pascal, c, C++, Java, PHP, Bash,
C#, Visual Basic, HTML, JavaScript,
Python, Objective-C, Swift
.NET, Qt/QML, Java ME/EE/SE, Android
SDK, iOS SDK, Node.js, Arduino

6. Who am I around Firebase?
How dare I am talking here…

7. I’m the user of firebase long before
Firebase has order & Limit feature
I’ve been using it since Jan 2014

8. Disclaimer
30 minutes won’t be enough to show
how cool Firebase is

9. What is Firebase?

10. Let’s see a Real-World demo
Rather than theoritise about it

11. Take a photo with #DevFest2015

12. Shared photo will be automatically shown here
http://story.jepret.in/Jepret/gdgdevfest2015

13. Firebase delivers that photo
object to browser in realtime

14. Jepret Cloud Jepret Allegra Jepret Story

15. Firebase Firebase
Node.js + MongoDB
Deployed on Microsoft Azure
Architecture
Firebase
Realtime Gallery Allegra Machine Jepret Story app
Jepret Cloud

16. More about #Jepret?
http://jepret.in

17. Let’s see another demo

18. Typical Firebase
Demo

19. Let’s Try something different
today…

20. Let’s Get Physical
today…

21. Let’s light up the LED

22. My Setup

24. Circuit

25. Code
var wpi = require('wiring-pi');
wpi.setup('gpio');
var ledPin = 26; //26 is GPIO pin to LED
wpi.pinMode(ledPin, wpi.OUTPUT);
//Turn off/on the LED directly
var ledValue = 1; //0 to switch off
wpi.digitalWrite(ledPin, ledValue);

26. Let’s light up the LED via browser

27. Architecture
Raspberry Pi 2 Web app
HTTP
(LAN)

28. Light up the LED via Firebase

29. Architecture
Raspberry Pi 2 Web app
Internet

31. Firebase data

32. The trick
Raspberry Pi 2
Firebase
//if state == true, write 1
//if state == false, write 0
wpi.digitalWrite(LED_PIN, 1)
Firebase

33. Code
function setState(state) {
ledValue = +state; //convert true/false to appropriate integer
wpi.digitalWrite(ledPin, ledValue);
}
var deviceId = "smartlamp1";
var myFirebaseRef = new Firebase(“https://[YOUR_FIREBASE].firebaseio.com/devices”);
var deviceRef = myFirebaseRef.child(deviceId);
var myDevParamsRef = deviceRef.child("parameters");
myDevParamsRef.on("child_changed", function(snapshot) {
console.log(snapshot.key());
console.log(snapshot.val());
if (snapshot.key() == "state") {
setState(snapshot.val());
}
});

34. Now we can turn on the Led from Mars
….or from anywhere connected to internet

35. Let there be a light
Using the same principle, now we
can turn on/off an AC light bulb

36. Q1
TRIAC
U1
OPTOTRIAC_1
R2
1K
R1
470
LAMP
AC PLUG
GPIO
AC solid state switch
To RPi2
GPIO 5

37. My Setup

38. Let there be a light from App

39. Architecture
Raspberry Pi 2 Web app Mobile app

40. Sending Telemetry
what about…

41. Complete Circuit C
B
A
Q1
TRIAC
U1
OPTOTRIAC_1
R2
1K
R1
470
LAMP
AC PLUG
GPIO

42. Architecture
Raspberry Pi 2 Mobile app

43. Bonus: Automation
Turn on light bulb automatically using a LDR

44. https://github.com/andriyadi/FireSmartLamp
All code is here:

45. as Summary…

49. WELL DOCUMENTED

50. Education
http://edu.dycode.co.id | edu@dycode.com
a bit of ads…

51. We contribute
Education
100+ seminars, workshops, trainings delivered
Delivered to 20+ communities, organisations,
campuses
Next, could be yours…
Just drop us a message:
http://edu.dycode.co.id | edu@dycode.com

52. We teach
+ + [Obj-C]
+
Education

53. Opening soon…
Education
+

54. https://github.com/andriyadi/FireSmartLamp
Again, all code is here:

55. DyCode
www.dycode.com
office at dycode dot com | @dycode
Thanks