I build Google Home Assistant for Armbian (S905x) based on NodeJS (because Python eating more resources)

For installation you need:

1. NodeJS 14 and PM2
2. Microphone and Speaker
3. Device ID and Device Model ID (Create it on Google Cloud Console)

PM2 monitoring (Start -> Mic -> Detector -> Google Home Assist -> Audio -> Terminate)

1. PM2 started the app
2. Detecting wakeword/hotword
3. If wakeword/hotword detected, send your voice to Google Assistant API
4. Google Assistant will respons your voice
5. App terminated and PM2 will restart this app

I don't know the efficient way to run this app.

The logic with systemd is same as pm2. You can see on gassist.service file

StartLimitIntervalSec=1m
StartLimitBurst=100
Restart=always
RestartSec=1

I use gassist.service run on user instance because of when the armbian rebooted, pm2 run before pulseaudio run, so it will got error Connection refused

This documentation is based on FreeBSD documentation (only documentation, not the apps). Shell user-prompt use $ in codeblock and root-prompt use # in codeblock avoiding user confusion who directly use root account, using sudo instead of doas or vice versa.

Example

# nano

is equivalent with

$ sudo nano or doas nano

Add all of your configuration on .env file

DEVICE_ID=YOUR_DEVICE_ID // Obtained from GCP
DEVICE_MODEL_ID=YOUR_DEVICE_MODEL_ID // Obtained from GCP
LATITUDE=YOUR_LATITUDE //
LONGITUDE=YOUR_LONGITUDE // 
MIC_HW='plughw:1,0'

For MIC_HW, you can get from arecord command

$ arecord -l
card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice # 350: subdevice #350

You can see is the card number is 1 and device is 0 so your plughw is plughw:1,0

Clone this repo

$ git clone https://github.com/icaksh/armbian-gassist $HOME/.config/gassist

Chdir to repo dir

$ cd $HOME/.config/gassist

Install audio dependencies

# apt install libmagic-dev libatlas-base-dev sox libsox-fmt-all build-essential

Install alsalib or pulseaudio lib for compiling backend

# apt install libasound2/pulseaudio-libs-devel

Install speaker-arm64 with your audio backend (example pulseaudio)

$ npm install speaker-arm64 --mpg123-backend=pulse/alsa

Install all dependencies

$ npm install

Move the gassist.service file

$ mv gassist.service $HOME/.config/systemd/user/gassist.service

Enable the gassist.service

$ systemctl --user daemon-reload
$ systemctl --user enable gassist.service
$ systemctl --user start gassist.service

Check if gassist.service is running

$ systemctl --user status gassist.service
● gassist.service - Google Home Assistant
     Loaded: loaded (/home/icaksh/.config/systemd/user/gassist.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2023-03-20 03:01:11 UTC; 16min ago
   Main PID: 10637 (node)
     CGroup: /user.slice/user-1000.slice/[email protected]/gassist.service
             ├─10637 /usr/bin/node /home/icaksh/.config/gassist/index.js
             └─10645 arecord -q -r 16000 -c 1 -t wav -f S16_LE -

Install pm2

# npm install -g pm2

Run with pm2

$ pm2 start index.js

This repo is only for personal use. You cannot create a commercial product with this repo because of Google Assistant Policy.

This script was based on / modified from:

• Endoplasmic's Google Assistant
• Dabolus's NodeJS Assistant

Copyright (c) 2023 Palguno Wicaksono

The copyright holders grant the freedom to copy, modify, convey, adapt, and/or redistribute this work under the terms of the Massachusetts Institute of Technology License. A copy of that license is available at LICENSE