Per light color temperature settings

[julianrinaldi]

Being able to set a min/max color temperature per light would be very useful. While working in my office I like to have my lights at 5500K max. While I would only want my kitchen lights to get up to ~3500K.

[claytonjn]

This has been requested a few times (most recently in January, starting here), but I'm very hesitant to implement it. The whole point of Circadian Lighting is to help your body maintain a constant and natural circadian rhythm. Having lights at different temperatures in different rooms of the house would completely eliminate any benefit of adjusting the color temperature based on the sun's position.

I'm not going to close the issue because I have no problem making the change if someone can provide a compelling reason to do so.

[Djelibeybi]

Different smart bulbs (even from the same manufacturer) have different min/max kelvin values, which may be a somewhat compelling reason for adding this functionality.

For example, the LIFX colour bulbs generally have a range from 2500K to 9000K while the Day/Dusk (i.e. temperature change only) can do 1500K to 4000K.

Having this option would mean you're not restricted to the lowest common denominator temperature range of the least capable bulb. :)

[Joshfindit]

Would it be possible to change the lights with a homeassistant automation or a custom sensor that does the math you’re looking for?

That way the circadian addon would not have to be modified to do what you want.

[avdz]

Different smart bulbs (even from the same manufacturer) have different min/max kelvin values, which may be a somewhat compelling reason for adding this functionality.

For example, the LIFX colour bulbs generally have a range from 2500K to 9000K while the Day/Dusk (i.e. temperature change only) can do 1500K to 4000K.

Having this option would mean you're not restricted to the lowest common denominator temperature range of the least capable bulb. :)

+1 for this reason.
Personally I have the same issue with the brightness. My LED strip in my sleeping room is not as powerful as in the living. This means that the brightness in my sleeping room is usually just too low.

[mouth4war]

@claytonjn for the love of logic, if you have min/max brightness per switch then why not color temp? Both are used for delivering circadian lighting and either both should be tweakable per switch or neither :)

Edit: We already have sleep_colortemp per switch as well, why not min and max too?

How about we retain the min and max colortemp on main component level for calculations (and min can be set to the lowest possible color temp across all lights). Then, each switch can have its own range. When adjusting, if the desired color temp falls out of the switch's range, just bind to the switch's min and max values.

So, the lights that can go low (say 1700K) will go that low and the rest will stop at 2700K or 3000K.

[mouth4war]

https://github.com/claytonjn/hass-circadian_lighting/blob/5f9cb61ed0844fb8725957036514821ad747c4fb/custom_components/circadian_lighting/switch.py needs testing @julianrinaldi @Djelibeybi @avdz

min_colortemp and max_colortemp are available per switch (and initial_transition as well).