Automating our home with Android Things

About me

@sergioch23

github.com/sergiocasero

sergio.casero23@gmail.com

@sergioch23

Madrid Android Developer Group

About Android Things

About Android Things

About Android Things

• GPIO

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• PWM

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• Serial

About Android Things

About Android Things

Pinouts

Config

Hardware

Hardware

Lights

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Rain

Thermostat

Fire detector

Alarm

Hardware

Lights

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Relay

Triac

Link: https://goo.gl/opVD0s

Cost: 1€

Link: https://goo.gl/pD8seZ

Cost: 0,15€

Hardware

Rain

YL-83 / LM393

Link: https://goo.gl/Cd5THt

Cost: 0,52€

Hardware

Thermostat

DHT22

DS18B20

Link: https://goo.gl/smO2nE

Cost: 2,27€

Link: https://goo.gl/rhHIje

Cost: 0,524€

Hardware

Fire detector

MQ2

Link: https://goo.gl/8jSkCz

Cost: 0,88€

Hardware

HC-SR501

Alarm

Link: https://goo.gl/CBUHqQ

Cost: 0,75€

Hardware

HC-SR501

Alarm

Link: https://goo.gl/CBUHqQ

Cost: 0,75€

Hardware

Hardware

ESP8266

• 802.11 b/g/n
• Integrated low power 32-bit MCU
• Integrated 10-bit ADC
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, and power management units
• Supports antenna diversity
• WiFi 2.4 GHz, support WPA/WPA2
• Support STA/AP/STA+AP operation modes
• Support Smart Link Function for both Android and iOS devices
• SDIO 2.0, (H) SPI, UART, I2C, I2S, IR Remote Control, PWM, GPIO
• STBC, 1x1 MIMO, 2x1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4s guard interval
• Deep sleep power <10uA, Power down leakage current < 5uA
• Wake up and transmit packets in < 2ms • Standby power consumption of < 1.0mW (DTIM3)
• +20 dBm output power in 802.11b mode • Operating temperature range -40C ~ 125C
• FCC, CE, TELEC, WiFi Alliance, and SRRC certified
• Link: https://goo.gl/X5VmHw
• Cost: 1,67€

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ESP8266

ESP8266

Development

1. “Authentication”

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• Detecting sensors

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• Using sensors

Authentication

Limitations

1. No keyboard

2. No mouse

3. No touchscreen

4. No Auth API

The way

1. Android Things device generates QR

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• Phone reads the QR Code

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• Phone matches with Firebase database

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• Put user information into the database

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• Android Things receives the data

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User is paired with device ;)

1. Generate unique id

2 & 3. Phone reads the QR

4. Put user info into the database

4. Android Things receives the data

Read unique ID, push info to firebase and read in the Android Things device

Generate unique ID and push it to Firebase

User is paired with device ;)

Detecting sensors

Considerations

1. Wire and Wireless sensors

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• User could be out of network

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• The process should be easy and semi automatic

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Wire sensors

Wireless sensors

• Unique IP Address (192.168.1.XXX)

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• Android things device and sensors will be connected to the same network

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• Android Things device can use retrofit so...

Wireless sensors

Defining custom API

• id: IP Address
• label: User could change sensor label
• Type: Important, we have TERMOSTAT, SWITCH, ALARM...
• Value: The value (Example: In SWITCH can be 0, 1)

1 mandatory service: IP_ADDRESS/type

Wireless sensors

How to

192.168.1.100/type RETURN Sensor

192.168.1.101/type TIMEOUT

…

…

…

…

...

192.168.1.149/type RETURN Sensor

192.168.1.150/type TIMEOUT

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Wireless sensors

How to

Wireless sensors

How to

Using sensors

Using sensors

How to

Using sensors

How to

Links

• https://developer.android.com/things/index.html

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• https://developer.android.com/things/sdk/samples.html

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• https://github.com/nosmurf/lightgaro

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• https://www.raspberrypi.org/

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• http://www.esp8266.com/

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• https://github.com/esp8266

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• https://www.arduino.cc/

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• https://android.jlelse.eu/getting-started-with-android-things-b73be3295b42?gi=8a1eac13f919

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Thanks