Nilhcem / kids-assistant-androidthings

Room automation for kids, with the Google Assistant

Room Automation for Kids
(Android Things + Google Assistant)

Hardware

• NXP Pico i.MX7D (i.MX6UL seems too slow)
• Arduino Pro Mini 3.3V
• MF-RC522 RFID
• 6 buttons
• 5 220ohm resistors
• 1 1kohm resistor
• USB microphone + audio speakers

Optional:

• Relay module
• Magic Blue BLE RGB Bulb

Schematics (NXP Pico i.MX7D)

Install the Arduino Sketch

Flash the arduino/main/main.ino sketch to your Arduino Pro Mini 3.3V

Setting up the Google Assistant

• Enable the Google Assistant API and create an OAuth Client ID (name=androidthings-googleassistant) (Read here for help)
• Download the client_secret_NNNN.json file from the credentials section of the Console
• Use the google-oauthlib-tool to generate credentials:

pip install google-auth-oauthlib[tool]
google-oauthlib-tool --client-secrets client_secret_NNNN.json \
					 --credentials ./google-assistant/src/main/res/raw/credentials.json \
					 --scope https://www.googleapis.com/auth/assistant-sdk-prototype \
					 --save

• Make sure to set the Activity Controls for the Google Account using the application.

Deploy the Android Things app

• On the first install, grant the sample required permissions for audio and internet access:

./gradlew assembleDebug
adb install -g app/build/outputs/apk/debug/app-debug.apk

• On Android Studio, click on the "Run" button or on the command line, type:

adb shell am start com.nilhcem.kidsroom/.device.MainActivity

Kudos

• Music: https://www.bensound.com/royalty-free-music
• RC522 Fritzing: https://github.com/miguelbalboa/rfid/blob/master/doc/fritzing/