Simu-LED Cloud Dimming

[jgillard]

Just curious as to why when I have the moonlight running and the simu-led is dimming due to a cloud that things turn blue. I am using the light blue moonlight option but it's like the white LEDS cut out during the dimming turning things completely blue

I have my blue/white LED on L3 with interface set 0.8V to 10V and my red LED on L4 with interface set 0.8V to 10V.

Also, if anyone can post their dimming curves for their sunrise/sunset I would appreciate it. If you just use the RED LEDS the tank is crazy red so I think it would be best if you could mix in a bit of blue in the curve.

 

[boboxx]

...where did you read that light had to be set 0.8V to 10V???

 

[jgillard]

In the profilux manual it says that the blue LED moonlight should be set to 0.8v. I do not know for sure if this is right for this particular simu-led. I had asked before and heard it gives a better dimming curve but I would like to know definitively what the 1-10V interface is supposed to be set to for these simu-led.

 

[boboxx]

ha ya page 47 of the new manual for 4.01

"When using our dimmable moolight LEDs the voltage should be set at 0.8v"

now like you the question is the ProfiLuxSimu-L flash Stick considered a "moolight LED"?

 

[jackiechandc]

The 0.8v setting was mentioned in the Wiki site:

http://ghl.wiki-site.com/index.php/LED_Lighting

Hope that helps.

Wei

 

[jgillard]

I saw the wiki site as well but that is still a blue only moonlight! Also, it does not answer my question of why during the cloud dimming things turn blue instead of just dimming down.

 

[jgillard]

Does no one have any idea on this?

 

[Matthias Gross]

Hi

this comes from tolerances in the LED-drivers in the stick.
These tolerances are good visible at lower percentages.
Especially during clouds and when the dimming is low at this moment.

There is one workaround: Increase the lower voltage, maybe to 1.5V or 2.0V. The lower dimming will be raised, but the tolerances are less visible.

 

[jgillard]

Ok! Thanks Matthias. Makes sense! I will give this a try and update back here.

 

[Harry_Fish]

Mine do that as well; the moon is not That Blue and
no way to run only the whites. I also have one stick
that is brighter than the other and the reds blink on
and off at low levels on one of them as well.

I personally think they need work since when I brought this
up before I was told to put them on two different ports
and tweak the settings to get then to match up in brightness.

That basically burns up another L port (2 channels worth)
to fix a design flaw, and since we are limited to 10 that
is a very poor solution

I currently use 6 L ports now (2 for Simu-L sticks,
2 for Pumps, 2 for T-5’s (doubled up)

In the future I want to add 2 more pumps and 2 more
t-5 lighting Channels bringing me up to 10.

That leaves me with no room to add a fan unit
or Temp control unit as it is now.

(unless I'm wrong and we can have more than 10 L channels)