Solved!
Solution was to create a group and perform an action on that:
action: light.turn_on
target:
entity_id: light.kitchen_cabinet_sink
data_template:
brightness_pct: "{{100*state_attr('light.kitchen_sink_ceiling','brightness')/255}}"
Original:
Trying to run an automation to match one light's state (on/off/dim) to another's. Have this currently:
alias: Sync cabinet lights with sink light
if:
- condition: device
type: is_on
device_id: [something]5710
entity_id: [something]a438
domain: light
then:
- type: turn_on
device_id: [something]b447
entity_id: [something]470f
domain: light
brightness_pct: 100
else:
- type: turn_off
device_id: [something]b447
entity_id: [something]470f
domain: light
That works fine to turn the lights on or off, and I have triggers in the automation for that and changes in brightness. But using a non-static number for brightness_pct (yes, I know I'll probably have to math the 0-100 scale instead of 0-255) is giving me trouble. When I try something like this:
alias: Sync cabinet lights with sink light
if:
- condition: device
type: is_on
device_id: [something]5710
entity_id: [something]a438
domain: light
then:
- type: turn_on
device_id: [something]b447
entity_id: [something]470f
domain: light
brightness_pct: {{state_attr("light.kitchen_sink_ceiling", "brightness")}}
else:
- type: turn_off
device_id: [something]b447
entity_id: [something]470f
domain: light
I have also tried {{states.light.kitchen_sink_ceiling.attributes.brightness}} instead. Both seem to have the correct value when I play around in the developer tools. But when I put it in the automation, I get an error that a float value was expected. I see some similar issues online, but it always seems to be in a different context and people fix it by changing some value I never had.****
Out of curiosity, is it something as simple as needing to wrap the template in quotes? I may be mixing up my YAML with the Ansible work I've been doing, but I think you need to have templates double quoted like this in order to resolve the jinja2 properly:
"{{ state_attr('light.etc', 'brightness') }}I don't think you need the quotes in the Templates section of dev tools but you do in YAML files. I could be wrong though, let me know if you try it.
Definitely use the
state_attr()form overstates.etc.etcform. I think there's something about how HA handles startup that may mess with templates if you usestates.etc.etc.Combining this with similar comments, plus adding in the math to convert to a percent, I tried this:
Still getting the same message
For what it's worth, if I try to set brightness instead of brightness_pct, I get a different message
(I'm assuming that device just doesn't accept a brightness attribute - not a big deal to math it out though)
Taking a different approach of starting simple and working up,
100.0 works
{{100.0}} does not work
"{{100.0}}" also does not work