Show any Home Assistant automation on your TV

Open your automation in Home Assistant

In Home Assistant, go to Settings › Automations & scenes and open the automation you want on the TV — or create a new one with any trigger you like. Everything below happens in the automation's actions.

Add a “Create a persistent notification” action

Add an action and search for Create a persistent notification (the service is persistent_notification.create). Give it a title and a message — that's exactly what the TV will show.

The one rule: set the Notification ID to a name starting with theatrium. Only notifications named this way reach the TV — Home Assistant's own housekeeping stays on your phone where it belongs.

alias: Washing machine finished
triggers:
  - trigger: state
    entity_id: binary_sensor.washer_running
    from: "on"
    to: "off"
actions:
  - action: persistent_notification.create
    data:
      title: Laundry
      message: The washing machine has finished.
      notification_id: theatrium_laundry

In the visual editor that's three fields; the YAML above is the whole thing if you prefer to paste. Use a different notification_id per alert type (theatrium_garage, theatrium_mailbox, …) — a new alert with the same ID replaces the previous one instead of stacking.

That's it — run it

Run the automation (or trigger it for real). With Theatrium open on the TV, the alert appears as a banner and joins the Notifications card. Selecting an alert on the TV dismisses it in Home Assistant too — both stay in sync.

How long banners stay on screen is yours to set in Settings › Notifications › On-Screen Time — brief, 30 seconds, a minute, or until dismissed.

Optional: attach camera snapshots

Alerts whose ID starts with theatrium_motion_ can show a short burst of camera stills with the banner. Before the notification action, have the automation save snapshots to Home Assistant's public www folder using this exact naming — theatrium_<name>_1.jpg, _2.jpg, _3.jpg — where <name> matches the ID:

actions:
  - repeat:
      count: 3
      sequence:
        - action: camera.snapshot
          target:
            entity_id: camera.front_door
          data:
            filename: /config/www/theatrium_front_door_{{ repeat.index }}.jpg
        - delay: "00:00:01"
  - action: persistent_notification.create
    data:
      title: Front door
      message: Motion at the front door.
      notification_id: theatrium_motion_front_door

Shortcut: for cameras and doorbells you don't need to build this by hand — Theatrium's Motion & Doorbells setup (Settings › Notifications) creates the whole automation, snapshots included, automatically.