It might be different in the US but here in Europe there are no in-wall rotary controllers available, so I’m resorting to up/down wall switches.
On each button press it will switch to the next brightness level. To simplify my automations, I have created some helpful macros:
Macros
{% macro brightness_pct(entity) %}
{{ ((state_attr(entity, 'brightness') if is_state(entity, 'on') else 0) / 255 * 100)|round() }}
{% endmacro %}
{% macro next_multiple(input, step, direction) %}
{% if direction == 'up' %}
{{ ((input + 1) / step)|round(0, 'ceil') * step }}
{% endif %}
{% if direction == 'down' %}
{{ ((input - 1) / step)|round(0, 'floor') * step }}
{% endif %}
{% endmacro %}
{% macro next_step(input, steps, direction) %}
{% if direction == 'up' %}
{% set end = steps|max %}
{% set steps = steps|sort(reverse=false)|select("greaterthan", input)|list %}
{% endif %}
{% if direction == 'down' %}
{% set end = steps|min %}
{% set steps = steps|sort(reverse=true)|select("lessthan", input)|list %}
{% endif %}
{{ steps|first if steps|length > 0 else end }}
{% endmacro %}
Installation
Copy the macros to a file in your custom templates directory, like config/custom_templates/stepwise_dimming.jinja, then restart Home Assistant.
Usage
Create an automation that is triggered by the up/down buttons. You can use this action as a starting point:
Complete example action
choose:
- conditions:
- condition: trigger
id:
- up
sequence:
- service: light.turn_on
data:
brightness_pct: >-
{% from 'stepwise_dimming.jinja' import brightness_pct, next_step %}
{{ next_step(brightness_pct('light.bulb_office_andre')|int, [0, 25,75, 100], 'up') }}
target:
entity_id: light.bulb_office_andre
- conditions:
- condition: trigger
id:
- down
sequence:
- service: light.turn_on
data:
brightness_pct: >-
{% from 'stepwise_dimming.jinja' import brightness_pct, next_step %}
{{ next_step(brightness_pct('light.bulb_office_andre')|int, [0, 25, 75, 100], 'down') }}
target:
entity_id: light.bulb_office_andre
Then set brightness_pct according to these examples:
Fixed steps
To set the available brightness levels to 0, 25, 75 and 100 %, use:
{% from 'stepwise_dimming.jinja' import brightness_pct, next_step %}
{{ next_step(brightness_pct('light.bulb_office_andre')|int, [0, 25, 75, 100], 'up') }}
Regular steps (multiples of 10)
To set the available brightness levels to 0, 10, 20, …, 90, 100 %, use:
{% from 'stepwise_dimming.jinja' import brightness_pct, next_multiple %}
{{ next_multiple(brightness_pct('light.bulb_office_andre')|int, 10, 'up') }}
Piecewise regular steps
To set the available brightness levels to 0, 5, 10, 20, 30, 40, 50, 60, 80, 100 %, use:
{% from 'stepwise_dimming.jinja' import next_multiple %}
{% set input_pct = brightness_pct('light.virtual_bedroom_light')|int %}
{% if input_pct >= 60 %} {{ next_multiple(input_pct, 20, 'up') }}
{% elif input_pct >= 10 %} {{ next_multiple(input_pct, 10, 'up') }}
{% else %} {{ next_multiple(input_pct, 5, 'up') }}
{% endif %}