Eglo Connect-Z Zigbee light how independent CCT and RGB control?

Hello,

there was an ongoing discussion at Zigbee2MQTT Giitub about separately controlling CCT and RGB LEDs in Eglo Connect-Z lights with unfortunately no progress.

Situation:

The Eglo lights do have a main light with warm and cold white LEDs (CCT) and additional RGB back light LEDs which should be able to be controlled independently without one influencing the other.
Koenkk suggested to try an external converter. However the Eglo lights don’t have two separate endpoints Obviously a five channel controller is used (warm and cold white channels used for main light, red green blue used for back light).

What should happen:

  • There should be two light controls
  • One light controls the CCT channels
  • One light controls the RGB channels
  • The one must not influencing the other one. So only RGB set for the back light (including brightness!), the other one setting color temperature and brightness for CCT, on/off must not completely turn off the light but only dim the according channels to zero.

Beside the external zigbee2mqtt converter I also played around with light templates however didn’t get any further.

Could someone help here?

Seems like there is also here no answer.

I opened the light and it looks like it’s not that difficulty to add an additional controller:


I probably will attach an ESP32-C6 which I already successfully tested before with the RGB Zigbee light example.