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Awesome Open Source

Adaptive Lighting component for Home Assistant

Try out this code by adding to your custom repos in HACS (Home Assistant Community Store) and install it! This custom_component is also being added to core, see this PR, although it might take months before it makes it in.

The adaptive_lighting platform changes the settings of your lights throughout the day. It uses the position of the sun to calculate the color temperature and brightness that is most fitting for that time of the day. Scientific research has shown that this helps to maintain your natural circadian rhythm (your biological clock) and might lead to improved sleep, mood, and general well-being.

In practical terms, this means that after the sun sets, the brightness of your lights will decrease to a certain minimum brightness, while the color temperature will be at its coolest color temperature at noon, after which it will decrease and reach its warmest color at sunset. Around sunrise, the opposite will happen.

Additionally, the integration provides a way to define and set your lights in "sleep mode". When "sleep mode" is enabled, the lights will be at a minimal brightness and have a very warm color.

The integration creates 4 switches (in this example the component's name is "living_room"):

  1. switch.adaptive_lighting_living_room, which turns the Adaptive Lighting integration on or off. It has several attributes that show the current light settings.
  2. switch.adaptive_lighting_sleep_mode_living_room, which when activated, turns on "sleep mode" (you can set a specific sleep_brightness and sleep_color_temp).
  3. switch.adaptive_lighting_adapt_brightness_living_room, which sets whether the integration should adapt the brightness of the lights (if supported by the light).
  4. switch.adaptive_lighting_adapt_color_living_room, which sets whether the integration should adapt the color of the lights (if supported by the light).

Taking back control

Although having your lights automatically adapt is great most of the time, there might be times at which you want to set the lights to a different color/brightness and keep it that way. For this purpose, the integration (when take_over_control is enabled) automatically detects whether someone (e.g., person toggling the light switch) or something (automation) changes the lights. If this happens and the light is already on, the light that was changed gets marked as "manually controlled" and the Adaptive Lighting component will stop adapting that light until it turns off and on again (or if you use the service call adaptive_lighting.set_manual_control). This mechanism works by listening to all light.turn_on calls that change the color or brightness and by noting that the component did not make the call. Additionally, there is an option to detect all state changes (when detect_non_ha_changes is enabled), so also changes to the lights that were not made by a light.turn_on call (e.g., through an app or via something outside of Home Assistant.) It does this by comparing a light's state to Adaptive Lighting's previously used settings. Whenever a light gets marked as "manually controlled", an adaptive_lighting.manual_control event is fired, such that one can use this information in automations.


This integration is both fully configurable through YAML and the frontend. (Configuration -> Integrations -> Adaptive Lighting, Adaptive Lighting -> Options) Here, the options in the frontend and in YAML have the same names.

# Example configuration.yaml entry
    - light.living_room_lights


option description required default type
name The name to use when displaying this switch. False default string
lights List of light entities for Adaptive Lighting to control (may be empty). False list []
prefer_rgb_color Whether to use RGB color adjustment instead of native light color temperature. False False boolean
initial_transition How long the first transition is when the lights go from off to on (or when "sleep mode" is toggled). False 1 time
transition How long the transition is when the lights change, in seconds. False 45 integer
interval How often to adapt the lights, in seconds. False 90 integer
min_brightness The minimum percent of brightness to set the lights to. False 1 integer
max_brightness The maximum percent of brightness to set the lights to. False 100 integer
min_color_temp The warmest color temperature to set the lights to, in Kelvin. False 2000 integer
max_color_temp The coldest color temperature to set the lights to, in Kelvin. False 5500 integer
sleep_brightness Brightness of lights while the sleep mode is enabled. False 1 integer
sleep_color_temp Color temperature of lights while the sleep mode is enabled. False 1000 integer
sunrise_time Override the sunrise time with a fixed time. False time
sunrise_offset Change the sunrise time with a positive or negative offset. False 0 time
sunset_time Override the sunset time with a fixed time. False time
sunset_offset Change the sunset time with a positive or negative offset. False 0 time
only_once Whether to keep adapting the lights (false) or to only adapt the lights as soon as they are turned on (true). False False boolean
take_over_control If another source calls light.turn_on while the lights are on and being adapted, disable Adaptive Lighting. False True boolean
detect_non_ha_changes Whether to detect state changes and stop adapting lights, even not from light.turn_on. Needs take_over_control to be enabled. Note that by enabling this option, it calls 'homeassistant.update_entity' every 'interval'! False False boolean
separate_turn_on_commands Whether to use separate light.turn_on calls for color and brightness, needed for some types of lights False False boolean

Full example:

# Example configuration.yaml entry
- name: "default"
  lights: []
  prefer_rgb_color: false
  transition: 45
  initial_transition: 1
  interval: 90
  min_brightness: 1
  max_brightness: 100
  min_color_temp: 2000
  max_color_temp: 5500
  sleep_brightness: 1
  sleep_color_temp: 1000
  sunrise_time: "08:00:00"  # override the sunrise time
  sunset_offset: 1800  # in seconds or '00:15:00'
  take_over_control: true
  detect_non_ha_changes: false
  only_once: false


adaptive_lighting.apply applies Adaptive Lighting settings to lights on demand.

Service data attribute Optional Description
entity_id no The entity_id of the switch with the settings to apply.
lights no A light (or list of lights) to apply the settings to.
transition yes The number of seconds for the transition.
adapt_brightness yes Whether to change the brightness of the light or not.
adapt_color yes Whether to adapt the color on supporting lights.
prefer_rgb_color yes Whether to prefer RGB color adjustment over of native light color temperature when possible.
turn_on_lights yes Whether to turn on lights that are currently off.

adaptive_lighting.set_manual_control can mark (or unmark) whether a light is "manually controlled", meaning that when a light has manual_control, the light is not adapted.

Service data attribute Optional Description
entity_id no The entity_id of the switch in which to (un)mark the light as being "manually controlled".
lights no A light (or list of lights) to apply the settings to.
manual_control yes Whether to mark (true) or unmark (false) the light as "manually controlled", when not specified it selects all lights in the switch.

Automation examples

Reset the manual_control status of a light after an hour.

- alias: "Adaptive lighting: reset manual_control after 1 hour"
  mode: parallel
    platform: event
    event_type: adaptive_lighting.manual_control
    light: "{{ }}"
    switch: "{{ }}"
    - delay: "01:00:00"
    - condition: template
      value_template: "{{ light in state_attr(switch, 'manual_control') }}"
    - service: adaptive_lighting.set_manual_control
        entity_id: "{{ switch }}"
        lights: "{{ light }}"
        manual_control: false

Toggle multiple Adaptive Lighting switches to "sleep mode" using an input_boolean.sleep_mode.

- alias: "Adaptive lighting: toggle 'sleep mode'"
    - platform: state
      entity_id: input_boolean.sleep_mode
    - platform: homeassistant
      event: start  # in case the states aren't properly restored
    sleep_mode: "{{ states('input_boolean.sleep_mode') }}"
    service: "switch.turn_{{ sleep_mode }}"
      - switch.adaptive_lighting_sleep_mode_living_room
      - switch.adaptive_lighting_sleep_mode_bedroom


See the documentation of the PR at and this video on Reddit to see how to add the integration and set the options.

This integration was originally based of the great work of @claytonjn, but has been 100% rewritten and extended with new features.

Having problems?

Please enable debug logging by putting this in configuration.yaml:

  default: warning
    custom_components.adaptive_lighting: debug

and after the problem occurs please create an issue with the log (/config/home-assistant.log).


These graphs were generated using the values calculated by the Adaptive Lighting sensor/switch(es).

Sun Position:


Color Temperature:




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