Tip

Set this up to run on boot with automatic restarts using systemd/systemctl (Linux) or Task Scheduler (Windows).

If you already use Home Assistant, it’s strongly recommended to use an automation with the Google Nest integration instead. Three example automations are included in this repository.

If you’re planning to dedicate a device (e.g. a Raspberry Pi) to this project, Home Assistant is the better long-term solution. It natively supports multiple automations, is well-tested at scale, provides reliable persistence, and requires significantly less maintenance than running this standalone.

Alexa + Nest

Google doesn't let me use alexa with the V1 doorbell. So I fixed it.

Prerequisites

Warning: This is not free. It costs $5 to set up Google Device Access.

• Node.js installed on your device.
• Basic knowledge of a terminal and node.js, if not you can still do it but errors will be hard to debug.
• A google device access acount. Warning: This costs $5, to prevent device hacking attempts.
• A device to run this on. MacOS, windows and any form of linux work. I prefer a raspberry pi.
• An ngrok static url, and knowledge of how to use the CLI.

Step 1.

Follow this guide to set up Google cloud and google device access. Set redirect URI to your ngrok static url, with "/finishAuth" on the end. Remember to download the credentials.

Step 2.

Follow this guide up until Generate Events, to set up pub/sub.

Step 3.

Go to the pub/sub page through the link in the previous guide. Click on your new subscription, and set it to "Push" instead of "Pull", then enter your ngrok static url with "/webhook" on the end.

Step 3.

Set up your webhook (here)[https://www.virtualsmarthome.xyz/url_routine_trigger/] and link it to your alexa. Name it anything, this will be your doorbell. In alexa, make sure to enable doorbell ring notefications in the device that is discovered.

Step 4.

This step is to be done on your device. Download index.js, and run npm install express googleapis google-auth-library. Replace CLIENT_ID, CLIENT_SECRET with the ones contained in the credentials file you downloaded. Replace REDIRECT_URI with what you entered in redirect URI in step 1.

const GOOGLE_CLIENT_ID = "CLIENT_ID";
const GOOGLE_CLIENT_SECRET = "CLIENT_SECRET";
const REDIRECT_URI = "REDIRECT_URI";

paste the url for webhook json in the fetch in "/webhook". Don't forget the string.

fetch(
  "https://www.virtualsmarthome.xyz/url_routine_trigger/activate.php?trigger=c92d7dc8-00c9-428a-9758-b5c64fae6d6f&token=432b669a-fdd0-4b12-8f26-bfd05e708210&response=json"
)

Step 5.

Run node index.js. In another tab/terminal, run ngrok http --url=YOUR_STATIC_URL 5500

That's it!