Android Things - The IoT platform for everyone.

Presented at Devconf South Africa.

In this presentation, Rebecca will cover the new platform recently announced by Google, called Android Things. She will cover an introduction to Android Things, basics of getting started with the platform and how any developer without electronics experience can build IoT apps with Android Things. A few use cases and examples will be shown in this session, along with how you can use the existing android libraries with your next IoT project.

Rebecca is the Android Engineering Lead at DVT based in Johannesburg, South Africa. She loves working with new technology and has a passion for making great user friendly products. In her spare time, she manages her open source app, Book Dash, which contains free African story books. She speaks at conferences and local meetups mainly about Android. When not coding, she can be found baking and travelling the world. Previous talks : https://riggaroo.co.za/talks/

Transcript

1. Rebecca Franks riggaroo.co.za @riggaroo The IoT platform for everyone
2. Hello Rebecca Franks Android Engineering Lead at Dynamic Visual Technologies Google Developer Expert for Android riggaroo.co.za @riggaroo
3. Expectation vs Reality
6. What is Android Things?
7. Android Things is an extension of the Android platform for IoT and embedded devices.
8. Cameras Gateways HVAC Control Smart Meters Point of Sale Inventory Control Interactive Ads Vending Machines Security Systems Smart Doorbells Routers Energy Monitors Asset Tracking Fleet Management Driver Assist Predictive Service Ideal for powerful, intelligent devices that need to be secure.
9. How is Android Things different? Android Studio Android SDKs & Developer Tools Firebase Libraries Google Cloud Platform SDKs Any other compatible Android/Java libraries...
10. IoT Developer Console Automatic Security Updates Signed Images Verified Boot Easy and Secure Deployment
11. SoM Architecture Google Managed BSP Scaling to Production
12. Android Things for Developers
15. Displays are Optional Consider Alternate UI
16. Cons • Only Dev Preview • Weave not yet available for Android Things • Very new - Not many examples online - mostly Python • Some APIs not supported - ie hardwareAcceleration • Closed Source
17. Electronics Basics
18. Components Breadboard - Construction base for prototyping electronics Jumper Wire - Used to interconnect the components of a breadboard
19. LEDs - Emits visible light when an electric current passes through it Push Switches - Allows electricity to flow between its two contacts Components
20. Resistor -Used to reduce current flow Source: http://www.electronicshub.or g/resistor-color-code/ Components and many more...
21. Ohm’s Law The current through a conductor between two points is directly proportional to the voltage across the two points. V = I * R V is Voltage (volts) I is Current (amps) R is Resistance (ohms) I = 0.023A V = 5V R = 5V / 0.023A R = ± 217 ohms
22. Building an Android Things app
23. Pinout Diagram
24. Fritzing Diagrams
25. Integrating with Hardware GPIO PWM I2C SPI UART Input Sensors GPS Peripheral Driver Library Peripheral I/O User Drivers
26. Let’s try live coding..
27. In case of emergency
28. • A Raspberry Pi 3 or alternative - Running Android Things • Create standard project in Android Studio • Add to app level build.gradle: provided 'com.google.android.things:androidthings:...' Getting Started
29. <application ...> <uses-library android:name="com.google.android.things"/> <activity ...> ... <!-- Launch activity automatically on boot --> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.IOT_LAUNCHER"/> <category android:name="android.intent.category.DEFAULT"/> </intent-filter> </activity> </application> AndroidManifest.xml
30. Button button = new Button("BCM6",Button.LogicState.PRESSED_WHEN_LOW); button.setOnButtonEventListener(new Button.OnButtonEventListener() { @Override public void onButtonEvent(final Button button,final boolean pressed) { //... Log.i(TAG, "Button value changed:" + pressed); ledGpio.setValue(pressed); } }); Button Press compile 'com.google.android.things.contrib:driver-button:0.2'
31. //get access to the pin PeripheralManagerService service = new PeripheralManagerService(); ledGpio = service.openGpio("BCM6"); ledGpio.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW); ledGpio.setValue(true); //remember to close the peripheral ledGpio.close(); Turn on an LED
32. Turn it on or off using Firebase Realtime DB FirebaseDatabase.getInstance().getReference("ledKitchen") .addValueEventListener(new ValueEventListener() { @Override public void onDataChange(final DataSnapshot dataSnapshot) { Boolean value = (Boolean) dataSnapshot.getValue(); ledGpio.setValue(value); //.. handle exceptions } //.. });
33. Demo
34. Other Examples
35. https://github.com/riggaroo/android-things-distributed-piano Distributed Piano
36. https://github.com/riggaroo/android-things-electricity-monitor Firebase Realtime Database Electricity Monitor
37. final DatabaseReference onlineRef = firebaseDatabase.child(".info/connected"); final DatabaseReference isPowerOnRef = firebaseDatabase.child("/online"); onlineRef.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(final DataSnapshot dataSnapshot) { if (dataSnapshot.getValue(Boolean.class)) { isPowerOnRef.setValue(true); isPowerOnRef.onDisconnect().setValue(false); } } //.. }); Electricity Monitor - Firebase
38. https://github.com/androidthings/sample-tensorflow-imageclassifier Image Classifier
44. Image Classifier
45. Rebecca Franks riggaroo.co.za @riggaroo Google's IoT Developers Community https://g.co/iotdev Google's IoT Solutions https://iot.google.com Android Things SDK https://developer.android.com/things
46. Rebecca Franks riggaroo.co.za @riggaroo www.devconf.co.za/rate
47. • https://www.myelectronicslab.com/tutorial/raspberry-pi-3-gpio-model-b- block-pinout/ • https://developers.google.com/weave/ • https://techcrunch.com/2015/10/24/why-iot-security-is-so-critical/ • https://github.com/androidthings/sample-simplepio/ • https://developer.android.com/things/index.html • https://github.com/riggaroo/android-things-electricity-monitor • https://github.com/riggaroo/android-things-distributed-piano • https://github.com/riggaroo/android-things-button-examples Links & References