Convert the Hue light level to actual lux value

Configuration
1

Hi,
Since the Hue motions sensors have been added to the current Hue integration, the conversion of the light level to lux from @robmarkcole is not transferred to the integration.

Therefore, I am now looking for a way to convert the present value to the real lux value corresponding to this conversion:

image
image870×164 23.3 KB

But how do I translate this into a template sensor? I have made an attempt, however, without success?

{{ ((states(‘sensor.office_light_level’) | float | round(2)) - 1) / 10000 }}

Thank you in advance :wink:

2

you’re missing the 10 to the power of the eq

{{ 10**((states('sensor.office_light_level') | float - 1)/10000) | round(2) }}
3

Hi Petro, I just tried that. Gave me a result of 1.0 which don’t make any sense in a room with light.
The raw value from the light_level is: 8.485940

Im seeking the old value which varied between 0 and 30.000 (indoor)?

4

are you trying to reverse the equation? I.E. The value you gave is the lux and you’re searching for the light level?

5

Yes I’m trying to reverse as he did in his custom sensor script. The current value I get is a light level and I want it to be as the old lux value. The script I posted above is the conversion to lux from light level (I assume).

6

It’s been a long time since i’ve dealt with exponents in math but I’ll give it a whirl

{{ 10000*log(states('sensor.office_light_level') | float, 10) + 1 }}
1 Like
7

The value output from the new integration is already the lux value. The complication being that in the custom component the words ‘light_level’ meant a raw value that needed converting into lux, but in homeassistant ‘light_level’ is a level of light measured in lux.

You do not need to make any conversions if you want a lux value as you say.

8

Petro you’re my man! That did the math! :star_struck:
I’m back to the old lux range and varies between 0 and 30000 instead of 0 to 800.

Thank you! :clap:

1 Like