mcs51
July 21, 2026, 9:25am
1
Hallo
Module: VMB4LEDPWM-20
Wanneer ik in Home Assistant een “brightness_pct: 80” instel, dan zie ik in VelbusLink slechts 25%
Eender wat, lager dan 30 in HA, VelbusLink blijft op OFF
Een paar ander waardes hieronder: HA; VelbusLink
50; 3 – 70; 11 – 90; 45 – 95; 64 – 100; 100
Dat geeft een héééél exotische XY-grafiek die ik jullie zal besparen.
Waar komt dat verschil vandaan ?
Bedankt voor jullie inzichten
Alain
MDAR
August 5, 2026, 5:49am
3
Have you posted this on the HomeAssistant forum and seek assistant from the integration team?
If it’s a very specific curve, I could guess at the reason, but you say your graph is exotic. Does this mean you hadn’t spikes & troughs in it?
I think the Dev fixed an issue with the lookup table from an early integration.
Are you running the latest version?
FYI
Some Velbus dimmers don’t follow a 0 to 100% in decimal.
Newer dimmers are Hex. 0x00 to 0xFF
Meaning the Slider value needs converting from Dec to Hex.
mcs51
August 5, 2026, 8:18am
4
Hi,
Latest version of what? HA, module, VelbusLink ?
Since it’s not a life-threatening situation I didn’t post anything on HA forum.
I just wondered where that difference came from
Range 0 to 40% in HA OS can’t be used since the light remains OFF
MDAR
August 5, 2026, 10:37pm
5
Latest version of HA Core & Velbus integration.
If it’s an issue with the HA Integration of Velbus, then it needs posting on the HA Community forum.
Hi, Would it be possible to add support for the Velbus Home Automation system in Home Assistant? The protocol sheets are available on their site and integration in your product would surely mean a great addition for myself and other users. ...
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Officially, The Velbus company doesn’t { currently } support third party integrations.
(Something I’ve been arguing for, for many years)
That curve looks familiar
Did you get to page 6 of the protocol doc?
(I’m fairly sure the Velbus dev for HA has addressed this issue already)