this post was submitted on 17 Dec 2025
17 points (100.0% liked)

homeassistant

17171 readers
2 users here now

Home Assistant is open source home automation that puts local control and privacy first.
Powered by a worldwide community of tinkerers and DIY enthusiasts.

Home Assistant can be self-installed on ProxMox, Raspberry Pi, or even purchased pre-installed: Home Assistant: Installation

Discussion of Home-Assistant adjacent topics is absolutely fine, within reason.
If you're not sure, DM @GreatAlbatross@feddit.uk

founded 2 years ago
MODERATORS
GreatAlbatross@feddit.uk
greatalbatross@lemmy.world
17
How to handle lights that are physically powered off (but Home Assistant still sees as "on")? (startrek.website)
submitted 2 days ago by Kirk@startrek.website to c/homeassistant@lemmy.world
15 comments fedilink hide all child comments
 

I have a button that triggers a script for bedtime to turn off all lights, and, if pressed again, checks to see if all lights are off and if so, turns a few (like the bathroom light) on.

My problem is one or two of the lights (connected via Zigbee2Mqtt) are often powered off at the switch on the lamp, meaning HA still sees them as "on" until the power is restored and they can be turned "off" via the app. The lights cannot be turned "off" (in HA) manually.

Is there any good solution for detecting when a light goes missing and turning it "off" in HA?

you are viewing a single comment's thread
view the rest of the comments
[–] just_another_person@lemmy.world 6 points 2 days ago (1 children)

You don't. If they don't have power, they drop from the network or mesh.

This is why they make "Smart" Switches, which is probably more why you want instead of individual bulbs maybe.

[–] Kirk@startrek.website 4 points 2 days ago* (last edited 2 days ago) (1 children)

If they don’t have power, they drop from the network or mesh.

That's the problem, they don't drop, the entity remains in a zombie state. Is there really no way to test if a device is still connected or not?

EDIT: Or just manually set an entity to "off"?

[–] just_another_person@lemmy.world 5 points 2 days ago

You can decrease the timeout of the devices to maybe get them to show as offline faster. Thread about it here.