Re-evaluate CCT with WLED and the HA WLED integration

arjanhagedoorn · May 23, 2024, 4:39pm

Would like this too, I have a WS2805 RGB CCT ledstrip that WLED just added in the latest beta. But now i cannot use it in HA (only with calculated CCT channel)

cooljimy84 · June 7, 2024, 10:05am

Yea. i’m stuck on .12 to get my colour temp stuff working, but it has a bug where it randomly just fades really slow and not smooth (almost flashes as it fades down)

Sjorsa · June 13, 2024, 7:25pm

I’ve just ran into this issue which I’m honestly really surprised by. I got some CCT strips since I’ve grown out of the RGB phase and would like something brighter. I assumed they would work just fine with HA since why not?
I’ve enabled Calculate CCT from RGB in the LED Preferences of WLED, but that makes the led strip basically unusable since selecting almost any color turns the strip off. Also this entity now doesn’t have temperature control, WTH? I know that is possible with HA since I have lights with temperature control.
I would love if this issue gets resolved!

ugorur · July 14, 2024, 3:22pm

I have a WS2805 RGB CCT ledstrip that WLED and I want to control m leds with color temperature. this issue continue over 2 years. I believe this must have in 2024

Ricktheroller · July 25, 2024, 11:41pm

Another vote for this one, I’m testing a WS2805 strip and would say these will probably become quite popular as they combine RGB + WW + CW. All I really need from HA is to allow it to turn the strip on/off or select a preset, which works fine when I enable “Calculate CCT from RGB” to sync with HA then I can disable it and use the strip as normal. Problem is any time HA is restarted to install an update I need to go through the WLED resync process.

It’s one of those “almost there” parts of HA but as home automation goes I see lighting as being an important part. I can’t see myself going through this syncing process for long, especially if I want more WS2805’s. The main problem with the calculate CCT setting is (from what I’ve seen) it mixes the WW and CW channels so you can’t independently run each channel, bit of a shame if you want to run CW in the evening and WW at night for instance.

sparkydave · August 1, 2024, 4:51am

Looks like this is fixed in HA 2024.8 according to the Beta notes.

Tech1977 · August 5, 2024, 9:20am

Hi,
so it should also work for WLED Athom GU10 RGBCW bulbs?

sparkydave · August 5, 2024, 11:59pm

I would imagine so.

Tech1977 · August 9, 2024, 7:22am

Hi all,
I updated to version 2024.08.0, the Athom GU10 bulbs with wled 0.14.4 are detected;
you can adjust the CCT of the white but the color part does not work correctly:

the color wheel does not display the state of the color that is set to wled
increasing the White brightness (wled white channell) it also increases the Color brightness (wled value/brightness) so you cannot return to the only white CCT mode (wled only white channell) without having Color brightness
Color icons based on state does not work, you only see the state of the CCT and not the colors

https://postimg.cc/CdG8fQwS
https://postimg.cc/BjgPwLXy

Tech1977 · August 9, 2024, 7:47am

Hi, can you try with your Athom bulbs?

Ricktheroller · August 11, 2024, 1:07am

Thank you for putting this change in, while it looks like some have found issues I no longer have to switch “Calculate CCT from RGB” on via WLED, reload the HA integration and turn calculate off again every time I restart/update HA for every WLED CCT strip! I use presets for my setup to change colour settings and motion sensors on ESPHome devices to activate my strips through HA.

Ecke1 · August 30, 2024, 7:58pm

With WS2805 you have still just the color wheel. Its not possible tu use the cct LED in HA.

MPrice12337 · October 1, 2024, 2:39pm

I’m also running the WS2805 strips with WLED 0.15.0-b5 and unable to control them from home assistant beyond brightness, presets, and on/off. Is this something that would get fixed when it exits beta, or is it something else?

anon31320818 · January 5, 2025, 3:44pm

I find this odd. I have a btf ws2814/sk6812 rgbw strip that sort of works with Hass. If I use just rgb, it’s fine, but if I try and use any white temp controls, it goes crazy.

Am I understanding correctly that this is caused by Hass and wled maintainers not seeing eye to eye? So we as the users, get a broken sub par experience? If so, that’s concerning.

I don’t need the effects for this specific strip and will flash the esp to esphome and use that to control the light, but I find it very strange that something like this is in this state.

Tech1977 · January 16, 2025, 8:45am

could be integrated via MQTT :

but does anyone have an example of the MQTT configuration file with wled RGBCCT?

Sawtaytoes · May 26, 2025, 4:38am

I loaded up Home Assistant and added a MagWLED-1 I got today running 0.15.0. This is my first ever time using WLED, but I think I figured it out.

Everything works with my WS2805 RGBCCT strip in WLED, but in Home Assistant, it’s funky.

The white LEDs do activate, and I see everything here:

But it’s not working right. Clicking anything on the Color screen causes it to reset back to what’s shown in my screenshot even though the actual state changed in WLED.

Here’s a rundown:

On-off state syncs with in Home Assistant.
Total brightness syncs with in Home Assistant.
Color nor color brightness nor white brightness sync with Home Assistant.
White temperature syncs with Home Assistant.

So it’s something about the Color info not being properly reported back for some reason. That or there’s something funky with my setup:

There’s also this stuff I haven’t touched at the bottom:

Anyone else able to confirm?

Sawtaytoes · May 26, 2025, 4:45am

I saw this on some WLED docs, but I don’t think it’s accurate for 2025:

WLED devices are not supported by Home Assistant 2022.2 or later if a CCT bus is configured or White Balance Correction is enabled.

We hope to resolve this issue as soon as possible. As a temporary workaround you can enable the option Calculate CCT from RGB in LED settings.

Source: Home Automation Integration - WLED Project

If it is though, that’d explain why we’re having this issue. Even with White Balance Correction enabled, we have CCTs.

Sawtaytoes · May 30, 2025, 6:15am

I looked at a bunch of code tonight and found where it might be happening:

github.com/home-assistant/core

homeassistant/components/wled/light.py

1e973c1d7


      
              """Return the color value."""
              if not (color := self.coordinator.data.state.segments[self._segment].color):
                  return None
              return color.primary[:3]
          
          @property
          def rgbw_color(self) -> tuple[int, int, int, int] | None:
              """Return the color value."""
              if not (color := self.coordinator.data.state.segments[self._segment].color):
                  return None
              return cast(tuple[int, int, int, int], color.primary)
          
          @property
          def color_temp_kelvin(self) -> int | None:
              """Return the CT color value in K."""
              cct = self.coordinator.data.state.segments[self._segment].cct
              return kelvin_to_255_reverse(cct, COLOR_TEMP_K_MIN, COLOR_TEMP_K_MAX)
          
          @property
          def effect(self) -> str | None:
              """Return the current effect of the light."""

There’s a weird cast on this that’s not on the rgb color wheel version. I don’t know Python, but this is calling some internal Home Assistant functions, so I’m very lost where to look next.

I saw that @frenck made some changes last year for CCT compatibility, and those look fine to me.

Since that rgbw_color code calls into a Home Assistant core function, I’m wondering if something broke in there related to the way it’s passing color value data.

Does anyone know more? Is there a good way to report this bug outside of the forum?

anon31320818 · June 6, 2025, 10:16pm

Am interested in this, I know python and will take a look when I can (hopefully next week, I’m in the middle of porting my cync-lan project over to a Hass add-on this weekend)

I also have wled rgbcct strips and just CCT strips that do not work with HASS and it is extremely annoying.

Sawtaytoes · June 8, 2025, 10:01am

Thank you so much for showing some interest!

So you were having the same issues then?