google-assistant-hotword-raspi

Simple Google Assistant with hotword activation from Snowboy setup for RaspberryPi 1 and Zero W.

Setup

1. Google Assistant Python setup on Raspbery Pi

• Configure a Developer Project and Account Settings
• Configure and Test the Audio
• Setup virtual environment

  -   (Recommended) For Python 3:
  
      sudo apt-get update
      sudo apt-get install python3-dev python3-venv
      python3 -m venv env
      env/bin/python -m pip install pip setuptools --upgrade
      source env/bin/activate
  
  -   For Python 2:
  
      sudo apt-get update
      sudo apt-get install python-dev python-virtualenv
      virtualenv env --no-site-packages
      env/bin/pip install pip setuptools --upgrade
      source env/bin/activate
  

• Install dependencies sudo apt-get install portaudio19-dev libffi-dev libssl-dev
• Install Google Assistant SDK + Samples python -m pip install google-assistant-sdk[samples]
• Get credentials pip install --upgrade google-auth-oauthlib[tool] google-oauthlib-tool --client-secrets path/to/client_secret_XXXXX.json --scope https://www.googleapis.com/auth/assistant-sdk-prototype --save --headless
• Test using the sample python -m googlesamples.assistant Issue commands after pressing enter and if you did all the steps above Google Assistant should respond.

PS On Raspberry Pi Zero W this setup takes about 30-40 minutes.

2. Snowboy Python setup on Pi - Github

• (Optional - The required files are already in this repo) Download Snowboy compiled library for all versions of Pi + demo
• Install dependencies sudo apt-get install python-pyaudio python3-pyaudio sox
• Install BLAS sudo apt-get install libatlas-base-dev
• Install PyAudio pip install pyaudio You should be able to recored audio using: rec temp.wav

PS For Python 3 rename _snowboydetect.so_py3 to _snowboydetect.so.

Train your own hotwords or download existing ones from https://snowboy.kitt.ai/

3. Run gassistant.py and you should have a working Google Assistant with hotword activation

`python gassistant.py models/ok_google.pmdl`