Normalize lights, programmatically

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1

Here’s a script I made for my Linkind A19 RGBTW Wi-Fi Smart Light Bulbs. Depending on what your lights are or how they’re added, you may have to change things. It will:

  • Loop through a list of lights
  • Set Brightness
  • Set Kelvin Color
  • Return light to previous on/off state
alias: Normalize Lights
description: 'Normalize brightness and color, returns lights to previous on/off state'
variables:
  bright: 100 # 0 - 100, percentage of brightness you want to set
  k_temp: 4800 # kelvin color temperature you wish to set
sequence:
  - repeat:
      for_each: # These are my light entities I want to manage, replace with yours
        - light.living_room_entry
        - light.hall_hall
        - light.kitchen_sink
        - light.dining_room_dining_room
      sequence:
        - variables:
            l_id: "{{ repeat.item }}"
            # Recall if the light was off later
            was_off: "{{ is_state(l_id, 'off') }}"

        # Turn on light, set brightness, color
        - action: light.turn_on
          target:
            entity_id: "{{ l_id }}"
          data:
            brightness_pct: "{{ bright }}"
            color_temp_kelvin: "{{ k_temp }}"

        # If the light was off, turn it back off
        - if:
            - condition: template
              value_template: "{{ was_off }}"
          then:
            - delay: "00:00:01" # needed, for me, otherwise lights weren't turning off
            - action: light.turn_off
              target:
                entity_id: "{{ l_id }}"

If you want to specify an RGB color value instead, replace color_temp_kelvin with rgb_color and change the variable to a 0-255 RGB value like [255,255,0] rather than the 4800 kelvin number.

I’m not a YAML person so I did not know program syntax or capabilities. I struggled through asking the internet my questions and it gave me back a script that technically did what I wanted but was absolutely terrible in every regard. It had explicit values and just repeatedly copy/pasted blocks. TBH it’ll probably keep me up at night. Hopefully this helps spare someone that agony.

2

If you’re interested, here’s another way to do the same thing but without using a repeat for_each.

alias: Normalize Lights
description: 'Normalize brightness and color, returns lights to previous on/off state'
variables:
  bright: 100 # 0 - 100, percentage of brightness you want to set
  k_temp: 4800 # kelvin color temperature you wish to set
  lights:
    - light.living_room_entry
    - light.hall_hall
    - light.kitchen_sink
    - light.dining_room_dining_room
  lights_off: "{{ lights | select('is_state', 'off') | list }}"
sequence:
  - action: light.turn_on
    target:
      entity_id: "{{ lights }}"
    data:
      brightness_pct: "{{ bright }}"
      color_temp_kelvin: "{{ k_temp }}"
  - delay:
      seconds: 1
  - action: light.turn_off
    target:
      entity_id: "{{ lights_off }}"

I tested it in my home with four lights and confirmed it works correctly; it changed brightness and color temperature of all four lights and then restored two of them back to their initial state (off).

3

That is shorter yet, thank you for sharing!