Yeelight brightness adjust to sunrise/sunset during day and night

Configuration
1

I have an automation to adjust brightness to time, but after a year of using, it works well, but it seems like the sun does not care about the current time :smiley:

Motion turns on the yeelight, and another automation set the brightness, here is the current solution:

- alias: Dining Room brightness
  trigger:
  - platform: state
    entity_id: light.etkezo_rgbw
    from: 'off'
    to: 'on'
  action:
  - service: light.turn_on
    data_template:
      brightness_pct: >
        {% set  hour = now().hour | int  %}
        {% if   hour >=  7 and hour < 8  %} 15
        {% elif hour >=  8 and hour < 9  %} 40
        {% elif hour >=  9 and hour < 18 %} 100
        {% elif hour >= 18 and hour < 19 %} 50
        {% elif hour >= 19 and hour < 20 %} 30
        {% elif hour >= 20 and hour < 21 %} 10
        {% else                          %} 1
        {% endif %}
      kelvin: >
        {% set  hour = now().hour | int -%}
        {% if   hour >=  6 and hour < 8  %} 3000
        {% elif hour >=  8 and hour < 18 %} 3500
        {% elif hour >= 18 and hour < 20 %} 2500
        {% else                          %} 1700
        {% endif %}
    entity_id: light.etkezo_rgbw

How can I transform this to sunrise+1 hour, sunrise+2hours, sunset+1hour, sunset+2hours, or something like this, or if you have better idea it would be nice too, I’m thinking about it since autumn where we first set the 1 hour to winter time.

2

Paste this into your Template Editor and experiment with it.

{{ as_timestamp(state_attr('sun.sun', 'next_rising')) | timestamp_local }}

{{ (as_timestamp(state_attr('sun.sun', 'next_rising')) + 3600) | timestamp_local }}

{{ as_timestamp(state_attr('sun.sun', 'next_setting')) | timestamp_local }}

{{ (as_timestamp(state_attr('sun.sun', 'next_setting')) + 3600) | timestamp_local }}

The examples show how to determine sunrise+1 hour, sunset+1 hour, etc. For more information about the sun component:

3

It shows the next rising, I need to use the currrent one, and without date.

Like sunset is now at 20:08 and I want to lower the lamp to 70% at 19:08 and 50% at 20:08 and 10% at 21:08 and 1% after 22:08.

4

Yes, it’s the next rising, which means there’s a time difference of what? A minute or two? How can that tiny difference be relevant for setting a light’s brightness? Your current automation works in units of whole hours.

If you don’t need the date, use timestamp_custom to use only the time.

5

Have you considered something like this? It does what you want very nicely. You can use it to change brightness, colour temp or both.

6

The lights I would use this with have switches too for maximum brightness and minimum brightness, this custom component can’t work with it, tried it a few months ago, it got bugged very fast.

Hoped it is easy to use the sunset/sunrise time. :frowning: