What problem am I trying to solve?
I have dimmer-controlled lights in the sleeping room.
In the evening i mostly use the low brightness range (5-10%) and rarely use them full power.
It’s actually tricky to precisely steer the dial/slider to the desired brightness.
I have created a ‘synthetic’ light to control a dimmer in a non-linear way, giving more control to the lower brightness range. Demo:
The configuration
light:
- platform: template
lights:
sleep1_synth1:
friendly_name: sleeping room synth
turn_on:
service: light.turn_on
entity_id: light.sleep1_dimmer1
turn_off:
service: light.turn_off
entity_id: light.sleep1_dimmer1
set_level:
service: light.turn_on
data_template:
brightness: "{{ ( (0.58 + brightness/255) **5 * 0.1017 *255) | int }}"
entity_id: light.sleep1_dimmer1
value_template: >-
{{ states.light.sleep1_dimmer1.state }}
level_template: >-
{% if state_attr("light.sleep1_dimmer1","brightness") != None %}
{{ ( (( (states.light.sleep1_dimmer1.attributes.brightness+0.5) /255/0.1017)**0.2 * 255 ) - 147.9 ) | int }}
{% else %}
0
{% endif %}
How does it work?
The data_template function maps the brightness from the synthetic light to the real light.
The level_template function does the reverse, for when the light is dimmed locally.
Plots for both functions:
You can tweak the functions as you please: Graphing Calculator
Hope this helps and inspire you.