Using the AIY VoiceHAT from a standard RaspberryPi OS (raspbian) install
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Button on GPIO 23
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LED on GPIO 25
Install the overlay & reboot
echo "dtoverlay=googlevoicehat-soundcard" | sudo tee -a /boot/firmware/config.txt
Set defaults for asound (cat /proc/asound/cards to check card number, usually hdmi is 0, google aiy is card 1)
sudo cp asound.conf /etc/asound.conf
Install demo requirements
pip3 install vosk sounddevice
sudo apt-get install libportaudio2 espeak
buttonled.py - read the button and light the LED
motors.py - run motors attached to the drivers
servos.py - move servos
sound.py - test sound in python
testsound.sh - record and immediately playback 3 seconds of sound
voiceassistant.py - simple offline voice assistant, using vosk and espeak