Changing variable over time

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#1

I would like to be able to change a variable over time.

  1. Change the variable from x to y in specified minutes. (Change from 1 to 100 in 60 minutes)
  2. Change the variable from x to y from now until specific time. (Change from 1 now to 100 at 12:00)

It might be possible. Then I would like to know how.

At this moment I'm thinking of using a virtual dimmer to steer the variable. That would work for option 1. But for option 2 it will mean that I will have to make another variable with value of minutes before specific hour. I would have to make such a variable for every hour that I would like to use. Not very simple...

Any ideas would be appreciated.

#2

Sometimes it is helpful if you give an example of how you want to use these, as there may be alternative methods to explore.

#3

I want to make a central Color_Temperature_Variable.
I would like to use this so that all my white lights will have the same temperature.
During the day a nice daylight color.
From a combination of illuminance and sunset (which could be anytime between 16:00 and 22:00) to 23:00 I would like to fade to a warm white.

I have a rule now based on illuminance only, but I cannot get it to work like I want. In summer the lights are too warm, which makes them look "old" and in winter it's too flourescent-like cold...

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