How to group light devices in matter server? | Home Assistant | Page 1

lyric shale Mar 23, 2026, 1:17 PM

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I've just set up a matter over thread network with an smlight SLZB-06MU device in thread+OTBR mode. I'm running the Matter server addon in beta mode (the one with matter.js). Is there any way I can natively group devices so I don't have the popcorn effect when turning on/off many lights (10) at the same time?

shadow horizon Mar 23, 2026, 4:39 PM

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If I'm understanding your query...

Settings | Devices | Helpers
Create Helper | Group - select Light Group and add required lights

lyric shale Mar 23, 2026, 5:34 PM

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That's what I did, but it causes the popcorn effect and saturates the thread network. What I'd like is native matter grouping.

topaz turtle Mar 23, 2026, 7:47 PM

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AFAIK, Matter Group support is still on the roadmap ....

quasi geode Mar 24, 2026, 6:33 AM

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This feature will be called Groupcast in the upcoming specifications.

lyric shale Mar 24, 2026, 7:56 AM

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So it's not what is in version 0.15.0 of matter.js? https://github.com/matter-js/matter.js/blob/main/CHANGELOG.md

"Feature: Implement Matter Groups support in protocol, node, and (partly) controller packages"

GitHub

matter.js/CHANGELOG.md at main · matter-js/matter.js

A complete typescript implementation of the Matter protocol specification (https://buildwithmatter.com). Includes full support for controller, device, commissioning, secure communications, device t...

#How to group light devices in matter server?