Chosen color doesn't match light color (calibration? cheap LEDs?)

[tanuva]

Hello!

Something's been bugging me since I first set up Domoticz with my lights: I tend to be rather picky about the exact color I want the light to have. Now when selecting a color (be it via HomeKit/homebridge or Domoticz directly), the color I choose on screen doesn't really match the one I see on the wall. For example yellow tends to be way too green and orange only becomes really orange when I'm deep in the red area on-screen. (Hmm. I should Investigate whether I see a pattern here.)
I observe this mostly with the Fibaro RGBW controller that has rather cheap LED strips attached. Another Aeotec LED bulb is more or less color accurate, so I wouldn't have a bad conscience from blaming the LED hardware.

Has anyone ever seen this before? I'm mostly wondering if buying better LEDs is worthwhile; teaching Domoticz some color calibration would probably be one of the bigger projects with questionable return on investment. (And I'm not very familiar with the source yet...)

[ugge]

I have noticed this as well and have been thinking of possible causes. A few days ago I was reading through the configuration for the RGBW controller as well as the code in open z-wave and found that this particular controller suffers from a kind of bug for which there is some kind of workaround.

The controller doesn't report back the color after a change so the workaround ask for the color explicitly. Still this doesn't seem to work as the commanded color doesn't get executed.

When playing around with the open z-wave control panel I found out that giving a RGBW color code in hex gives the expected result. The only funny thing is that right after clicking submit the text field for color get updated with another value as if this is what the Fibaro report back.

Anyone have an idea how this might be?