Dynamic Light Group | Home Assistant | Page 1

sour ledge Mar 15, 2026, 8:34 PM

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I want to create a dynamic light group (or something similar) to be able to only adjust the lights that are currently on. I want to be able to have a slider on my dashboard that only adjusts those lights. I have tried googling all this and couldn't seem to find anything that would be able to easily achieve this?

ember shoal Mar 15, 2026, 9:20 PM

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Create a helper group of lights.

sour ledge Mar 15, 2026, 9:41 PM

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I currently have a light group with all lights in it, but if only some of those lights are on, I don't want the rest of the lights to turn on if i wanted to change brightness or color.

languid narwhal Mar 16, 2026, 1:21 AM

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I do this

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here:

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  all_on_lights: >
    {{ integration_entities('group')|  select('search',
    'light.group_all_lights')   | expand | selectattr("attributes.rgb_color",
    "defined") |  selectattr("state", "eq", "on") | map(attribute='entity_id') 
    | list }}

Define this variable a script, and call your action on 'all_on_lights'

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Code context:

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sequence:
  - variables:
      all_on_lights: >
        {{ integration_entities('group')|  select('search',
        'light.group_all_lights')   | expand |
        selectattr("attributes.rgb_color", "defined") |  selectattr("state",
        "eq", "on") | map(attribute='entity_id')  | list }}
  - repeat:
      sequence:
        - metadata: {}
          data:
            hs_color: "{{ range(1, 360) | random | string + ',' + 100 | string }}"
          target:
            entity_id: "{{all_on_lights[repeat.index - 1]}}"
          action: light.turn_on
      for_each: "{{ all_on_lights }}"
mode: restart
icon: mdi:sale
fields: {}
description: |-
  This script can be used to change the lights in the house to random colors.

  It can be used by an LLM to trigger this action when requested

  Do not use this to modify individual lights or bulbs!

sour ledge Mar 16, 2026, 1:38 AM

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From what I can see of that though it wouldn't allow me to do this from a card on the dashboard. My goal if possible is to treat only the lights that are on as one so i can use a light card (or something similar) on my dashboard. sorry if i'm not explaining things very clearly

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I know a light group would let me, but from what i've tried it doesn't see, possible to edit one after its created. I know its possible with the old style group, but that wouldn't be treated as a light

subtle lotus Mar 16, 2026, 2:41 AM

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sour ledge From what I can see of that though it wouldn't allow me to do this from a card o...

If you create a Number Helper with 0-100 range.
Put that helper on a Tile card with a slider
Have an automation monitor the helper for a change and then calling the script to change the lights as above, based on the number in the helper.

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(also while poking around in helpers I discovered a template light. You might be able to include the above search for lights that are on into a single entity with that. Never tried it, only just discovered it)

#Dynamic Light Group