Custom wakewords/snowboy has been removed/disabled due to audio related errors. For Pi Zero users instead of snowboy, a pushbutton trigger based assistant running on gRPC API has been added with all the custom features operable.

Process of setting up audio has not changed, however the process of seting up Google Assistant has change slightly, so please go through the given intructions.

Please Note: When using custom actions with pushbutton.py, the keywords should be said last

1. Headless auto start on boot.
2. Voice control of GPIOs without IFTTT, api.ai, Actions SDK.
3. Voice control of NodeMCU without IFTTT and MQTT.
4. Radio streaming.
5. Voice control of servo connected to RPi GPIO.
6. Safe shutdown RPi using voice command.
7. Stream Music from YouTube.
8. Indicator lights for assistant listening and speaking events.
9. Startup audio and audio feedback for wakeword detection.
10. Pushbutton service to stop Music or Radio playback.
11. Parcel tracking using Aftership API.
12. RSS Feed streaming.
13. Control of Kodi or Kodi Integration.

The Project has adopted the new Google Assistant SDK features released on 20th Dec 2017. Old installations will not work. So kindly Reformat your SD Card and start fresh

CLI or Raspbian Lite does not support all features and Custom wakeword does not work with Google's AIY image. So please use the Standard Raspbian Desktop image- Link https://www.raspberrypi.org/downloads/raspbian/

1. Open the terminal and execute the following

git clone https://github.com/shivasiddharth/GassistPi

1. Update OS and Kernel

sudo apt-get update  
sudo apt-get install raspberrypi-kernel  

2. Restart Pi

3. Choose the audio configuration according to your setup.
   The speaker-test command is used to initialize alsa, so please do not skip that.
   AIY-HAT and CUSTOM-HAT users, please reboot the Pi at places mentioned, else it will lead to audio and taskbar issues.

3.1. USB DAC or USB Sound CARD users,

sudo chmod +x /home/pi/GassistPi/audio-drivers/USB-DAC/scripts/install-usb-dac.sh  
sudo /home/pi/GassistPi/audio-drivers/USB-DAC/scripts/install-usb-dac.sh
speaker-test  

3.2. AIY-HAT users,

sudo chmod +x /home/pi/GassistPi/audio-drivers/AIY-HAT/scripts/configure-driver.sh  
sudo /home/pi/GassistPi/audio-drivers/AIY-HAT/scripts/configure-driver.sh  
sudo reboot  
sudo chmod +x /home/pi/GassistPi/audio-drivers/AIY-HAT/scripts/install-alsa-config.sh  
sudo /home/pi/GassistPi/audio-drivers/AIY-HAT/scripts/install-alsa-config.sh  
speaker-test  

3.3. USB MIC AND HDMI users,

sudo chmod +x /home/pi/GassistPi/audio-drivers/USB-MIC-HDMI/scripts/install-usb-mic-hdmi.sh  
sudo /home/pi/GassistPi/audio-drivers/USB-MIC-HDMI/scripts/install-usb-mic-hdmi.sh  
speaker-test  

3.4. USB MIC AND AUDIO JACK users,

sudo chmod +x /home/pi/GassistPi/audio-drivers/USB-MIC-JACK/scripts/usb-mic-onboard-jack.sh  
sudo /home/pi/GassistPi/audio-drivers/USB-MIC-JACK/scripts/usb-mic-onboard-jack.sh  
speaker-test  

3.5. CUSTOM VOICE HAT users,

sudo chmod +x /home/pi/GassistPi/audio-drivers/CUSTOM-VOICE-HAT/scripts/install-i2s.sh  
sudo /home/pi/GassistPi/audio-drivers/CUSTOM-VOICE-HAT/scripts/install-i2s.sh
sudo reboot
sudo chmod +x /home/pi/GassistPi/audio-drivers/CUSTOM-VOICE-HAT/scripts/custom-voice-hat.sh  
sudo /home/pi/GassistPi/audio-drivers/CUSTOM-VOICE-HAT/scripts/custom-voice-hat.sh  
speaker-test   

Those Using HDMI/Onboard Jack, make sure to force the audio

sudo raspi-config  

Select advanced options, then audio and choose to force audio

Those using any other DACs or HATs install the cards as per the manufacturer's guide and then you can try using the USB-DAC config file after changing the hardware ids

4. Restart Pi

5. Check the speaker using the following command

speaker-test -t wav  

1. Download credentials--->.json file (refer to this doc for creating credentials https://developers.google.com/assistant/sdk/develop/python/config-dev-project-and-account)

2. Place the .json file in/home/pi directory DO NOT RENAME

3. Use the one-line installer for installing Google Assistant
   Pi3 and Armv7 users use the "gassist-installer-pi3.sh" installer and Pi Zero, Pi A and Pi 1 B+ users use the "gassist-installer-pi-zero.sh" installer.
   4.1 Make the installers Executable

   sudo chmod +x /home/pi/GassistPi/scripts/gassist-installer-pi3.sh
   sudo chmod +x /home/pi/GassistPi/scripts/gassist-installer-pi-zero.sh
   
   

   4.2 Execute the installers Pi3 and Armv7 users use the "gassist-installer-pi3.sh" installer and Pi Zero, Pi A and Pi 1 B+ users use the "gassist-installer-pi-zero.sh" installer. When Prompted, enter your Google Cloud console Project-Id, A name for your Assistant and the Full Name of your credentials file, including the json extension.

   sudo  /home/pi/GassistPi/scripts/gassist-installer-pi3.sh  
   sudo  /home/pi/GassistPi/scripts/gassist-installer-pi-zero.sh
   
   

4. Copy the google assistant authentication link from terminal and authorize using your google account

5. Copy the authorization code from browser onto the terminal and press enter

6. After successful authentication, the Google Assistant Demo test will automatically start. At the start, the volume might be low, the assistant volume is independent of the Pi volume, so increase the volume by using "Volume Up" command.

7. After verifying the working of assistant, close and exit the terminal

1. Open the service files in the /home/pi/GassistPi/systemd/ directory and add your project and model ids in the indicated places and save the file.

2. Make the service installer executable

sudo chmod +x /home/pi/GassistPi/scripts/service-installer.sh

3. Run the service installer

sudo /home/pi/GassistPi/scripts/service-installer.sh    

4. Enable the services - Pi3 and Armv7 users, enable the "gassistpi-ok-ggogle.service" and Pi Zero, Pi A and Pi 1 B+ users, enable "gassistpi-push-button.service"
   To stop music playback using a pushbutton connected to GPIO 23 enable stopbutton.service

sudo systemctl enable gassistpi-ok-google.service  
sudo systemctl enable gassistpi-push-button.service
sudo systemctl enable stopbutton.service  

5. Start the service - Pi3 and Armv7 users, start the "gassistpi-ok-ggogle.service" and Pi Zero, Pi A and Pi 1 B+ users, start "gassistpi-push-button.service"
   To stop music playback using a pushbutton connected to GPIO 23 start stopbutton.service

sudo systemctl start gassistpi-ok-google.service  
sudo systemctl start gassistpi-push-button.service
sudo systemctl start stopbutton.service  

RESTART and ENJOY

Connect LEDs with colours of your choice to GPIO05 for Listening and GPIO06 for Speaking Events.

Connect a pushbutton between GPIO23 and Ground. Using this pushbutton, now you can stop the music or radio playback.

The default GPIO and shutdown trigger word is trigger. It should be used for controlling the GPIOs, servo and for safe shutdown of Pi.

It has been intentionally included to prevent control actions due to false positive commands. If you wish to change the trigger word, you can replace the 'trigger'in the main.py and assistant.py code with your desired trigger word.

The default keyword for servo motor is servo. For example, the command trigger servo 90 will rotate the servo by 90 degrees.

If you wish to change the keyword, you can replace the 'servo' in the action.py script with your desired keyword for the motor.

For safe shutdown of the pi, command is: trigger shutdown

You can define your own custom actions in the actions.py script.
THE ACTIONS SCRIPT OF THIS PROJECT IS DIFFERENT FROM AIY KIT's SCRIPT, COPY PASTING THE COMMANDS FROM AIY's ACTION SCRIPT WILL NOT WORK HERE. FOR A BETTER UNDERSTANDING OF THE ACTIONS FILE, FOLLOW THE FOLLOWING YOUTUBE VIDEO.

Download the Arduino IDE code for Nodemcu from here: https://github.com/shivasiddharth/iotwemos/blob/master/Google-Home-NodeMCU.ino

Add the wifi credentials, make the desired changes and upload the Arduino code onto the NodeMCU and get the IP address from the serial monitor.

Add the NodeMCU's IP address in the actions.py file.

FOR GUIDELINES ON MODIFYING THE ARDUINO CODE AND ACTIONS.PY FILE, FOLLOW THE FOLLOWING YOUTUBE VIDEO.

Default keyword for playing music from YouTube is Stream. For example, Stream I got you command will fetch Bebe Rexha's I Got You from YouTube.

Music streaming has been enabled for both OK-Google and Custom hotwords/wakewords.

Due to the Pi Zero's limitations, users are advised to not use the Music streaming feature. Music streaming will send the CPU usage of Pi Zero into the orbit.

Default keyword for streaming radio is tune into. For example, tune into Radio 2 command will open the corresponding radio stream listed in the actions.py file.

Radio streaming has been enabled for both OK-Google and Custom hotwords/wakewords.

Useful links for obtaining radio streaming links:
http://www.radiosure.com/stations/

http://www.live-radio.net/worldwide.shtml

http://worldradiomap.com/map/

Due to the Pi Zero's limitations, users are advised to not use the Radio streaming feature. Radio streaming will send the CPU usage of Pi Zero into next galaxy.

The default keyword for tracking parcel is parcel. For example, you can say where is my parcel or track my parcel.

Regsiter for a free account with Aftership at https://www.aftership.com gnereate an API number and add parcels to the tracking list. The generated API number should be added to the actions.py script at the indicated location. For a better understanding follow the attached youtube video.

Default keywords for playing RSS feeds is feed or news or quote. Example usage, top tech news will play the top technology news, top world news will play top news related to different countires, top sports news will play the top sports related news and quote of the day will give some quotes.

Do not mix the commands with Play as that has been associated with music streaming from YouTube.

numfeeds variable within the feed function in actions.py file is the feed limit. Certain RSS feeds can have upto 60 items and numfeeds variable limits the number of items to stream. The default value has been set to 10, which if you want can change.

The Kodi integration uses YouTube Data API v3 for getting video links. First step is to add the API to the project and create an API KEY.

1. Go to the projects page on your Google Cloud Console-> https://console.cloud.google.com/project
2. Select your project from the list.
3. On the left top corner, click on the hamburger icon or three horizontal stacked lines.
4. Move your mouse pointer over "API and services" and choose "credentials".
5. Click on create credentials and select API Key and choose close. Make a note of the created API Key and enter it in the actions.py script at the indicated location.
6. "From the API and services" option, select library and in the search bar type youtube, select "YouTube Data API v3" API and click on "ENABLE".
7. In the API window, click on "All API Credentials" and in the drop down, make sure to have a tick (check mark) against the API Key that you just generated.

The webserver is disabled by default and has to be manually enabled by the user.

1. This can be done in Settings → Services → Control → Allow remote control via HTTP.
2. Set the port number to 8080, username to kodi and password to kodi
   (username and password should be in lowercase).

For Kodi to play the YouTube video, you need to add and enable the YouTube Plugin on Kodi.

Note that "on Kodi" should be used in all the commands. If you want to use it exclusively, for Kodi Control, replace the given main.py and assistants.py file with the ones provieded in the extras/Kodi Intergration/ folder. In that, "on kodi" has been programatically added and other functions have been disabled,even genral queries like time and weather will not work. It is to be used only for the following Kodi commands.

1. Change the Pin numbers in the given sketch according to your board and upload it.

2. Follow the circuit diagram given.

Note: some HATS may use GPIOs 18, 19, 20, 21 for I2S audio please refer to the manufacturer's pinouts