Android Things - The IoT platform for everyone.

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Rebecca Franks riggaroo.co.za @riggaroo The IoT platform for everyone

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Hello Rebecca Franks Android Engineering Lead at Dynamic Visual Technologies Google Developer Expert for Android riggaroo.co.za @riggaroo

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Expectation vs Reality

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What is Android Things?

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Android Things is an extension of the Android platform for IoT and embedded devices.

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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.

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How is Android Things different? Android Studio Android SDKs & Developer Tools Firebase Libraries Google Cloud Platform SDKs Any other compatible Android/Java libraries...

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IoT Developer Console Automatic Security Updates Signed Images Verified Boot Easy and Secure Deployment

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SoM Architecture Google Managed BSP Scaling to Production

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Android Things for Developers

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Displays are Optional Consider Alternate UI

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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

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Electronics Basics

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Components Breadboard - Construction base for prototyping electronics Jumper Wire - Used to interconnect the components of a breadboard

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LEDs - Emits visible light when an electric current passes through it Push Switches - Allows electricity to flow between its two contacts Components

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Resistor -Used to reduce current flow Source: http://www.electronicshub.or g/resistor-color-code/ Components and many more...

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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

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Building an Android Things app

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Pinout Diagram

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Fritzing Diagrams

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Integrating with Hardware GPIO PWM I2C SPI UART Input Sensors GPS Peripheral Driver Library Peripheral I/O User Drivers

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Let’s try live coding..

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In case of emergency

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● 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

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... AndroidManifest.xml

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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'

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//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

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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 } //.. });

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Demo

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Other Examples

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https://github.com/riggaroo/android-things-distributed-piano Distributed Piano

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https://github.com/riggaroo/android-things-electricity-monitor Firebase Realtime Database Electricity Monitor

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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

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https://github.com/androidthings/sample-tensorflow-imageclassifier Image Classifier

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Image Classifier

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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

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Rebecca Franks riggaroo.co.za @riggaroo www.devconf.co.za/rate

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● 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