KNX vs. HA: same brightness sensor / address, but different values

Configuration
1

Hi,

I have a KNX weather station installed which shows also the brighthness measured with lux.

HA uses the same group address for the brightness value as KNX does and is programmed as:

  • name: “Brightness South”
    state_address: “1/0/7”
    type: brigthness

All HA configuration checks shows a valid setup.

However, the real value showed by the KNX diagnosis system is significantly higher. The dynamic difference ist not linear and the HA values stop around 26’000 lux which is not real / correct on a sunny day.

Does anybody have an idea / solution?

Many thanks
Roland

2

What DPT is used by the sensor?
See Knx value types maybe you want “illuminance”.

2 Likes
3

Wow, you are good! It worked. Hired!

4

Not for hire, but we’d appreciate a sponsor :wink:

5

Similar problem here.

With homeassistant, I read out a weather station and would like to write this value (in Lux) to KNX address.

How to do that?

6

Use knx: expose

1 Like