LED Output - setting Brightness

[south niche]

Where / How can i set Brightness? Cannot find it?
The LED should be on the Analog pins, or does not matters?

[lilac fable]

https://youtu.be/RdJUejJ-o9o
You dont need to use analog pins to turn on a led

[south niche]

Not turning on, but to turn it on and set a Brightness

[lilac fable]

As I understand most of the arduino pins are pwm then you can change the brightness

sorry not most of them

when you select a pin on the mobiflight module config they show if pwm or not

[jade dome]

You need to use a PWM capable pin in your arduino to be able to set the brightness. Any other pin only gives you on/off.
Then set the PWM function in the output config Display tab. You now have a range of 0 to 255 to set brightness depending on the value of the output config ($).

[south niche]

So this...
and this...?

[jade dome]

parking indicator will only return 0 or 1 as value... you should multiply that times the brightness you want to set, which could be another variable in the sim, brought in as config reference. So you do a transform of
$*#
assuming the config reference uses placeholder of #.
you now have a formula that is 0 if either variable is 0, or a value 0 to 255 if the parking brake is ON.

has a value of 0 to 255, of course

doesn't even have to be a sim variable. It can be a MF variable set with a potentiometer also.

[south niche]

So I can put on a Analog a one Potentiometer and then set references from this to all LEDs on the panel, if I want to have a "dimable" lights there?

[jade dome]

you might not want annunciators to ever have a brightness value of zero.

[jade dome]

short answer is YES. but with the caveat I just mentioned. You don't want annunciators with a brightness value of 0 because then they won't tell you when they are on.

[lilac fable]

I think most aircraft only habe dim and bright from annunciator light level

[south niche]

The idea is, that the panel I use on day / evening and want to set a Brightness of the LEDs depending on a surrounding.
And as I understood it is possible only on a PWM pins...?

[lilac fable]

can use the compare tab to transform 0-255 to 50-255 to prevent dim to mutch

[jade dome]

yes, only PWM pins. That is the simple solution but requires one PWM pin per LED, which if you have a lot of LEDs, may not be a good solution.
There has been a lot of discussion here about using a FET transistor to control a backlighting circuit where all back light leds are connected. Then you only require one pwm pin to control the brightness of all leds.

[south niche]

If the LEDs are not just a backlight, and are dependent on states of buttons in aircraft, I need a one PWM pin for one state LED?

[jade dome]

Yeah, I like the DM13A. Controls 16 leds individually and requires no resistors on each led.

[jade dome]

for the simple solution, yes. One PWM pin per led. DM13A gives you control over 16 leds individually and the brightness can be set with one PWM pin.