Google Cast - Auto cast Dashboard when TV turns on

Configuration
1

Looking to create an automation for casting a dashboard when the TV is turned on. The purpose is to always display a dashboard on the TV (through Google Cast) when it is not being used for anything else.

When the TV is on, I am able to successfully cast my /lovelace/home View by doing the following:
Going here by clicking “Media” and selecting “TV”:
/media-browser/media_player.living_tv
And then clicking the “Dashboards” tile and selecting “Default”.

This was my last attempt at the YAML, working with claude.ai to troubleshoot/refine:

alias: Auto Cast Dashboard on TV Power On
triggers:
  - entity_id: media_player.living_tv
    to: "on"
    trigger: state
actions:
  - delay:
      seconds: 10
  - action: cast.show_lovelace_view
    data:
      dashboard_path: home
      entity_id: media_player.living_tv
      view_path: "0"
mode: single

The “url” for the default/home view is “home” per the view config settings.

When I “Run action” on the “Google Cast: Show dashboard view” nothing happens on the TV.

image
image1061×471 6.36 KB

Just trying to figure out what code is behind the manual process of pushing the dashboards to the TV via the media user inferace…

References:

2

As you configured it, the dashboard that should be displayed has an url like “http://<my_ha_host>:8123/home/0”.
Is it actually working in a browser?

Try maybe, as a test:

      dashboard_path: lovelace
      view_path: "default_view"