Homey Community Forum

Help with "set relative dim-level"

#1

I would be very grateful if someone could give me an example on how “set relative dim-level” works. I have a light switch with the option to “long-press” and would like to use it to dim the lights gradually. If I understand the function correctly, relative dim-level is what I need? Or if someone has a better option that’s fine too.
Thanks

#2

Check out this recent thread:Relatief dim niveau
Its in dutch, but goole might help you translate.
It also shows example flows.

#3

Dim to 100% is 100%, 80% is 80%

Relative dim 20% is Set 20% higher then current level. So lamp is on 60% then relative dim 20%, lamp goes to 80%

Relative dim -20%, lamp goes to 40%

#4

Thank you that is very helpful!

#5

Thanks that helps!

#6

So I’ve understood how it works according to the previous messages but for some reason it only works once, what might I be doing wrong? If I turn my light off it’s “shining” at 0% correct? So if I choose relative dim level 20%, it should shine 20% brighter than 0. So far so good. Now if I run the same flow again, I assumed it should change from 20% to 40%, however this does not happen, it keeps shining at 20%.
I know I have chosen relative dim-level because if I manually dim a light to let’s say 50% and run the flow, it goes to 70%. But if I run the flow again, nothing happens.

Any idea?

#7

Can you share your flow? Always better to understand it when seeing the flow

#8


It’s not much of a flow but this is it…

#9

And if your using the test button?

#10

Just tested this. With another trigger or with the test button like Roy stated it works like a charm. Can u try another trigger or, like @RoyWissenburg mentioned, try the test button to see what happens?

#11

I just tried “dim to” and set it to 20% and its actually not as bright as when usin relative dim to 20% from zero…so I guess that’s where the issue is… No difference if I press the test button…

#12

In Holland we say: Meten is weten. Like “not as bright” can mean a lot of things.

#13

Well basically if I turn the light off and then use relative dim 20%,the light dims to about 80%.whereas if I use basic “dim to” and 20%, the light actually dims to 20% which is a lot less bright than 80%

#14

and?

#15

Same behavior. It’s the relative dim that refuses to work in my flow… It just dims to the same value every time and stays there…

#16

Strange the relative dim should work. Can you try, to set the lamp on, for example on 50%

And then a flow if button pressed ,and lamp is on, then dim relative…

Otherwise iam out if options.

Or you keepinf the button pressed always?

1 Like
#17

Interesting. I tried what you said. If I use the dim to value first and set it to 20% and after that I use the relative dim and set it to whatever like 10% it works, both with the physical button and the test button. However if I turn the light off and press the relative dim it goes all the way to about 80% so its only from when the light is off that it doesn’t work.

#18

Then it probbely dont know the last percentage, that also explanes what your said that is was going to 80%

So i needs first a normale percentage before it can dim relative.

We learn every day

#19

Got it, I will fix my flow accordingly :blush: Thanks for the help!

#20

Are you using LEDs?
LEDs are hard to dim at the lower %,

It is related to very low load they have (thats why fibaro has a bypass in case you use leds)
(“This Dimmer Bypass makes it possible to dim light sources with minimum power consumption, such as e.g. single 0,5Watt LED”)

I have 4 philips led spots connected to the same dimmer.
When I switch it on absolute to 15%, 2 of the leds go on, 2 just stay off.
When I switch it on absolute to 20%, 2 of the leds go on, 2 sometimes go on right away, sometimes it takes a few seconds and then they pop on too.

My advice: test your flows at higher dim %, if it works fine lower the percentage.