Circadian lighting custom component for Home Assistant that brings several features that help to mimick the Sun light with connected lights.
The Brightness returns a brightness percentage between 0% and 100% depending on:
- the date and time
- the latitude
- the longitude
Current configuration is as follow:
- during civil twilight ( sun elevation > -6° ): Brightness = 100%
- between civil and nautical twilight ( -12° < sun elevation < -6° ): Brightness = linear function of sun elevation between 50% and 100%
- during the night ( sun elevation < -12° ): Brightness = 50%
The Color Temperature returns a color temperature in Kelvin between 2000K and 5500K depending on:
- the date and time
- the latitude
- the longitude
Current configuration is as follow:
- during twilight ( sun elevation > -0.833° ): ColorTemp = linear function of sun elevation between 3000K and 5500K
- between twilight and civil twilight ( -6° < sun elevation < -0.833° ): ColorTemp = linear function of sun elevation between 2000K and 3000K
- during the night ( sun elevation < -6° ): ColorTemp = 2000K
Copy this folder to <config_dir>/custom_components/circadian_lighting/ in your Home Assistant installation.
You can also use HACS to install this component and keep it up to date.
Add the following to your configuration.yaml file:
# Example configuration.yaml entry
circadian_lighting:This will create two new sensors:
- sensor.circadian_light_brightness
- sensor.circadian_light_color_temperature
You can use these two sensors in your automations to set your lights brightness and color temperature.
# Example automations.yaml entry
- alias: "Kitchen light on"
trigger:
- platform: time_pattern
seconds: "/30"
condition:
- condition: state
entity_id: light.kitchen
state: "on"
action:
- service: light.turn_on
data_template:
entity_id: light.kitchen
brightness_pct: {{ states('sensor.circadian_light_brightness') }}
kelvin: {{ states('sensor.circadian_light_color_temperature') }}