Gradually turn on lights.

[gwp1]

Three LIFX outdoor bulbs, call them #1, #2, #3.

The goal is to have the following outcome:

#1, color A
#2, color B
#3, color C
after 00:00:10, hard shift:
#1, color B
#2, color C
#3, color A
after 00:00:10, hard shift:
#1, color C
#2, color A
#3, color B
after 00:00:10, hard shift:
#1, color A
#2, color B
#3, color C

Visual being that the colors essentially move in a single direction across the house all night long.

I thought maybe cannibalizing Reactor Ex Machina until I realized I'm shifting COLORS, not ENTITIES.

Thoughts, anyone?

[Elcid]

ok set a expression named rotated with value of ["a","b","c"] then set the expression to blank, the last value should be ["a","b","c"]
Then you use the expression variable to set your there colour lamps. the last reaction in the rule should be to set the expression variable to ${{push(rotated,shift(rotated))}} which will rotate the last value of the expression variable, removing the first value and placing it on the end.

[gwp1]

This being my weak space, I'm missing how the COLOR setting gets tied to the expression here (admittedly pre-caffeine as I read what you wrote.)

[Elcid]

["a","b","c"] would hold the value of the colour setting. I do not own any lifx lamps, so do not know the value you would send. But a,b,c could be hex colour values or rgb colour array etc.

${{rotated[0]}} would be the colur of first lamp. ${{rotated[1]}} would be second etc

What does Lifx lamps require to be sent to change colour?

[gwp1]

It allows for a few options, I'm using RGB.

[Elcid]

@gwp1 Whats the format?

[gwp1]

@elcid Red values 0-255
Green values 0-255
Blue values 0-255

I've built a small number of these just for those very basic "it's xmas, house is red and green" type times:

[Elcid]

[[255,0,0],[0,255,0],[0,0,255]] would be the initial array to set a starting value, instead of ["a","b","c"]
So red, green, blue for the 3 lights.
Then in light 1
red would be ${{rotated[0][0]}}
green would be ${{rotated[0][1]}}
blue would be ${{rotated[0][2]}}
For light 2 set the first index to [1] and for 3rd light to [2].

This would work for nth number of lights, you would just add an array element for each light.

[edited for corrections]