Thank you!Checked, no its not
So its UI problem and nothing you can do with that.
You have the option to fix reef-pi for your own use, though I am uncertain if the repository maintainers are still actively supporting the project.
I also don't see any new update in the last month, we'll see.. I hope that the maintainers are still supporting the project..
That could be your eyesight..
I've read that the best curv for led dimming is not linear but kind of logarithmic.That could be your eyesight..
Linear dimming the low end can look abrupt because your eyes are more sensitive to "steps"
See gamma curve dimming..
Years ago I did suggest it as a "choice" linear or different gamma curves but do not believe it was implemented.
What are Dimming Curves and How to Choose - MOONS'
What are dimming curves and how to choose? MOONS’ LED drivers offer a variety of dimmer curve options that can be adapted to the dimmers and controllers from LUTRON, LEVITON, and HELVAR.www.moonsindustries.com
LED Tricks: Gamma Correction
A fluke of human perception makes LEDs appear brighter than you’d expect, skewing RGB color mixes. Here’s a software trick to work around this and get the colors you want.learn.adafruit.com
reef-pi has a variety of pwm profiles that are not linear including sine and diurnal profiles https://github.com/reef-pi/reef-pi/blob/main/controller/pwm_profile/sine.go#L30I've read that the best curv for led dimming is not linear but kind of logarithmic.
https://lygte-info.dk/project/Demo16bitPWM UK.html
I think that reef-pi uses a linear dimming curv.
For now this is the best I could achieve, maybe in the future we can try to add this feature to reef-pi... these are the mod that I cannot do by myself.. unfortunately I'm an hardware guy, not a software one
P.S. does anyone of you know if I can set multiple mode for the same led channel? I want to run my blue channel both as Diurnal and as Lunar. There's a way to set it up or do I have to use the Interval mode at set each slider to the corresponding value?
thank you!
github.com
You should be able to use two different profile using two different light controller under the same module using the same jack/driver. You have to be careful about them not interefering with each other, by using timer to enable /disable them during night time vs day time.
Hi Simon, for me it did work. Only I created 4 timers. One to turn on day and one to turn off day, one to turn on moonlight and one to turn of moonlight. Then I made one reversible macro to turn on day and turn off moonlight that I triggered only ones to initiate the start. Hope that helps....
@Ranjib There's no easy way to use the same channel both as Diurnal and Moonlight? Or maybe a simple way to control light enable/disable with timer without using macros..Here a screenshot of my timer, the macro I deleted, it was only one time needed...
Alright, I had a look at the code for the PWM-profiles on github and diurnal works with a cosine to the power of 3. The profile looks like this for different min/max settings:
The diurnal profile is at the minimum value outside the start and end times. In between the Start and End Time it ramps up and down.
At exactly the start time (denoted 0) it starts ramping up from the minimum, to the maximum. This takes about 1/5 or 20% of the time interval between Start and End. After about 1/10 or 10% of the interval the light is in the middle between minimum and maximum value ( in the plot: (80%+10%)/2 = 50% )
The same thing happends towards the end, at about 4/5 or 80% of the interval between start and end the light starts ramping down. It will have fallen half the way towards the minimum at about 9/10, or 90% of the interval between Start and End. At exactly the End time it will reach the minimum again.
Practical Example:
I set my light to Minimum 0% and Maximum 80%, since my light is a bit too strong, between 08:00 and 16:00.
It will slowly start up at exactly 08:00, reaching 80% shortly past 9:30 (20% of 8 hours are about 1 hour 30 minutes).
A few minutes before 14:30 it will start ramping down, reaching 0% exactly 16:00.
Something I saw as well, which @Ranjib mentioned in another thread:
there is a light profile called "composite", which seems to stitch together different light profiles for their respective programmable interval. In my case I could use this to, for example, have a diurnal between 08:00 and 16:00 and afterwards run a much weaker lunar profile between 16:00 and 08:00.
It's not exposed in the GUI yet, put I'm hopefull that I can either set this manually or wait for the update.
