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$13 voice assistant for Home Assistant

This tutorial will guide you to turn an ATOM Echo into a voice assistant. Pick up the tiny device to talk to your smart home. Issue commands and get responses!

Prerequisites

Home Assistant 2023.10 or later, installed with the Home Assistant Operating System. If you do not have Home Assistant installed yet, refer to the installation page for instructions.
Home Assistant Cloud or a manually configured Assist Pipeline
Have enabled a wake word for your voice assistant
The password to your 2.4 GHz Wi-Fi network
Chrome (or a Chromium-based browser like Edge) on desktop (not Android/iOS)
M5Stack ATOM Echo Development Kit
USB-C cable to connect the ATOM Echo

Installing the software onto the ATOM Echo

Before you can use this device with Home Assistant, you need to install a bit of software on it.

Make sure this page is opened in a Chromium-based browser on a desktop. It does not work on a tablet or phone.
- Select the Connect button below. If your browser does not support web serial, you will see a warning instead of a button.
- For advanced users: The configuration file is available on GitHub.
To connect the ATOM Echo to your computer, follow these steps:
- In the pop-up window, view the available ports.
- Plug the USB-C cable into the ATOM Echo and connect it to your computer.
- In the pop-up window, there should now appear a new entry. Select this USB serial port and select Connect.
- Troubleshooting: If no new port shows, your system may be missing a driver. Close the pop-up window.
  - In the dialog, select the CH342 driver, install it, then Try again.
Select Install Voice Assistant, then Install.
- Once the installation is complete, select Next.
- Add the ATOM Echo to your Wi-Fi:
  - When prompted, select your network from the list and enter the credentials to your 2.4 GHz Wi-Fi network.
  - Select Connect.
  - The ATOM Echo now joined your network. Select Add to Home Assistant.
This opens the My link to Home Assistant.
- If you have not used My Home Assistant before, you will need to configure it. If your Home Assistant URL is not accessible on http://homeassistant.local:8123, replace it with the URL to your Home Assistant instance.
- Open the link.
Select OK.
To add the newly discovered device, select the ATOM Echo from the list.
- Add your ATOM Echo to a room and select Finish.
You should now see the ESPHome integration.
Select the ESPHome integration. Under Devices, you should see the M5Stack Atom Echo listed.
- Your ATOM Echo is connected to Home Assistant over Wi-Fi. You can now move it to any place in your home with a USB power supply.
Congratulations! You can now voice control Home Assistant. Now give some commands.

Controlling Home Assistant over the ATOM Echo

Say your wake word. For this tutorial, use “OK, Nabu”.
- Wait for the LED to start blinking in blue.
Say a supported voice command. For example, Turn off the light in the kitchen.
- While you are speaking, the blue LED keeps pulsing.
- Once the intent has been processed, the LED lights up in green and Home Assistant confirms the action.
  - Make sure you’re using the area name exactly as you defined it in Home Assistant.
  - You can also ask a question, such as
    - Is the front door locked?
    - Which lights are on in the living room?
Your command is not supported? Add your own commands using a sentence trigger.
You find ATOM Echo takes too long to start processing your command?
- Adjust the silence detection settings.
- Go to Settings > Devices & Services and select the ESPHome integration.
- Under M5Stack ATOM Echo, select 1 device. Under Configuration, change the Finish speaking detection.
- This setting defines how much silence is needed for Assist to find you’re done speaking and it can start processing your command.