Trying to set a minimum brightness level for a dimmable light

Configuration
1

I have a light that I am dimming through a 0-10v dimmer and the light is off when under 10%. I’m trying to make an automation that turns the light down when temperature is too high but I’m running into an issue where I only want it to be able to dim to 11% so that it won’t be able to turn off completely. I had initially planned to do this with a state condition for the lights brightness level but I don’t know how to make it so that it’s triggering on any brightness above 10% not just on a specific brightness level.

Thanks for any help hopefully this is in the right place.

2

Anyone have advice?

3

It’s been a while, but here’s mine for a pair of lamps that flicker below 16%. Remember that the brightness attribute is on a 0-255 scale so you’ll have to convert your value ( 0.11 * 255 = 28 ). I set it up like that with the condition so it triggers on any state change; if you make the trigger < X then it only triggers when it goes from above the value to below.

- id: 'id_17'
  alias: 'prevent bed lights set below 16%'
  trigger:
    - platform: state
      entity_id: light.bed_lights
  condition:
    - condition: template
      value_template: '{{ state_attr("light.bed_lights", "brightness") < 41 }}'
    - condition: template
      value_template: '{{ state_attr("light.bed_lights", "brightness") != 0 }}'
  action:
    - service: light.turn_on
      target:
        entity_id: light.bed_lights
      data:
        brightness: 41

Edit: added the 0 condition so the light can be turned off!

4

I also use a Zigbee LED dimmer whose 0-10V output is used to control the house ventilation. The Brightness attribute uses a value from 0 to 255 and the Brightness_pct uses a value from 0 to 100. If I pull the slider of the light.huisventilation to below 40% or turn it off, it is immediately reset to 40%. My ventilation should not run any lower.
My automation looks like this:

alias: Set Ventilation to 40% if it turns off or drops below 40%
description: >-
  This automation sets the ventilation to 40% if it is turned off or drops below 40%.

triggers:
  - entity_id: light.huisventilatie
    attribute: brightness
    to: null
    trigger: state
  - entity_id: light.huisventilatie
    to: "off"
    trigger: state
actions:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ states('light.huisventilatie') == 'off' }}"
        sequence:
          - target:
              entity_id: light.huisventilatie
            data:
              brightness_pct: 40
            action: light.turn_on
      - conditions:
          - condition: template
            value_template: >-
              {{ (state_attr('light.huisventilatie', 'brightness') | int * 100 /
              255) < 40 }}
          - condition: template
            value_template: "{{ state_attr('light.huisventilatie', 'brightness') != 0 }}"
        sequence:
          - target:
              entity_id: light.huisventilatie
            data:
              brightness_pct: 40
            action: light.turn_on
mode: single
5

would anyone be able to please help me set this up? does this go in the configuration.yaml file? what is the “id” value?

what is this formula related to: " 0.11 * 255 = 28"

6

It goes in automations. I put that formula there bcz the OP wanted the automation to trigger when the lamp is set below 11%: since brightness is on a 0-255 scale, he would multiply 0.11 * 255 to get the result of 28, below which the automation would trigger. As @Braveboy noted, you can also use the brightness_pct attribute and not have to convert to the 0-255 scale.