Nanoleaf Matter thread lightstrip sluggish color translation about core HOT 7 OPEN

Hey there @home-assistant/matter, mind taking a look at this issue as it has been labeled with an integration (matter) you are listed as a code owner for? Thanks!

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from core.

This is a device issue, not a HA issue. Please report the issue to Nanoleaf.

from core.

I don't think it's a device issue.

The reason why I say that is because if I control the light with my nanoleaf APP having Bluetooth disabled on my phone, color transitions are smooth.

It seems home assistant may use a different way to change the color than the Nanoleaf app.

Do you still believe I should open an issue with nanoleaf itself?

Thanks for your support

from core.

Home Assistant is the only controller actually implementing transitions and we figured out that some devices really have difficulties with that, while for others it works great. So far we found out that its troublesome on ESP32 based devices, running the 1.0 version of the SDK.

As this is not an ESP32 based device but Thread it should work fine, at least it works for the other Nanoleaf lights we have tested, such as the E27 and GU10 bulbs.

Can you provide a bit more detail on what is sluggish exactly ?
Only a color to color transition or also a turn on/off ? What about brightness changes ?

from core.

I think I can take a video of the color transition which will clarify what happens: basically instead of changing from color A to B in a straight line in the color 'globe', it starts to move around with a curved line following a strange trajectory, causing weired color changes to the light.
https://github.com/home-assistant/core/assets/632266/3a476a16-0b78-4976-8032-a316a5e8f1ce

See what happens when changing via nanoleaf app, HASSIO is able to track color change even if it's done via nanoleaf
https://github.com/home-assistant/core/assets/632266/ab3b7584-cf00-4b22-b4d2-bae79f0abb32

Similar thing when changing TEMPERATURE. In the following video there's a comparison between nanoleaf APP and hassio
https://github.com/home-assistant/core/assets/632266/f6c5be67-a7fd-418b-98a4-c4d1bab84e7e

Turn on from off is smooth only if the color is the same. If I'm in red, switch off, and turn on with blue, I still get the strange color route

Brightness change seems OK

from core.

Have you tried updating the Nanoleaf firmware to the latest version. Recent updates in the Essentials line brought the device up to Matter 1.2 and greatly improved reliability. Not sure if there is a similar update for your product, but check to be sure.

from core.

I can confirm it's a problem with Nanoleaf and their Matter implementation. I've been testing transitions with SmartThings and the same happens in my Nanoleaf Matter over Thread smart bulbs. WiZ on the other side has perfect colour transitions (although they flood the controller with reports but that's another story).

Transitions in Matter are handled by the devices, the home platform just sends a command like "move to that colour in 4 seconds", it's not the platform updating the lights periodically so when a transition is not smooth it's the device doing it wrong.

In current firmware, Nanoleaf does smooth brightness Matter transitions but some transitions like temperature or colour are done by steps instead of a continuous change. If the transition time is short there will be few steps and hence the stuttery / sluggish transition.

P.D: By the way, brightness transitions in Nanoleaf are only smooth for short times, if the time is long they clearly change step by step too. I have a wind-down routine that will transition to 0% brightness over 10 minutes and I can tell every time it drops one brightness level. Again, the same routine with my WiZ lights is buttery smooth.

from core.