How do i disable the Notification LED at night? - Galaxy S III Q&A, (US Carriers)

Thing is like a runway light at an airport. Tasker doesn't seem to be able to do it in stock form. No idea if secure settings could do it. Anyone have any ideas?
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

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I don't know, but +1 I was thinking the same thing.

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This would have to be manual every night but it would work. Settings>led>check boxes.
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Sent from my Sammy Galaxy S3 using Tapatalk 2

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Yeah that isn't gonna fly. I have tasker automating a night mode. I guess its a feature the tasked devs will need to add in. Right now I just a it it face down on my nightstand. Not a huge deal to leave it facedown.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

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Maybe you could at least make it one touch off and one touch on by using a NFC tag and NFC Task Launcher and Tasker...maybe

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I figured out how to do it using tasker, but you need root. I also need to do some more testing, but this should work in most cases.
Some background: when a notification comes in, the system sets the file led_pattern in /sys/devices/virtual/sec/led to something non-zero. 3 is a slow blinking blue light, 1 is solid red, I forget what the others are now. When the screen is turned on, this is reset to zero, and when the screen is turned off, if the notification bar hasn't been opened (and the program with the notification hasn't been opened) the value is reset to something non-zero. So, I created a simple task to change the value back to zero:
Create a new task, then select Script>Shell. Enter the following command:
echo 0 > /sys/devices/virtual/sec/led/led_pattern
Check the 'Use Root' box
Then your task is done. I'd try it once to make sure you have accepted whatever superuser popups (you'll need to always allow this for it to work on its own).
Now create a profile, and for the context select Event>UI>Notification. You may need to check tasker on the accessibility menu if you haven't already (it will prompt you if necessary). Add whatever other contexts you want (I have a variable that's set when I turn on my nighttime menu that I check for so the light will blink during the day but not at night). If you don't add other contexts this will always block your light, so make sure you've done some check to block it only at night.
Disclaimer: I haven't extensively tested this. There are a few quirks I've found so far:
1) If you receive a google voice text, the light instantly turns purplish normally. On my phone it will come on for a split second before tasker can kill it.
2) If you receive a notification which is blocked with this profile/task, and then turn on the screen but don't do anything to clear the notification the light will turn on when the screen is turned off again. This is also true if the notification comes in when you have the screen on and you turn it off before clearing it. You might be able to fix this by adding some variables to the profile/checking for screen on/off, but I mostly just want it to automatically turn off the light when I'm asleep so I'm happy with this so far.
3) I haven't tested this overnight, I guess it's possible that the phone will run a check and turn the notification back on at some point. I'll test it tonight and see if anything weird come up.
4) I've only tested this blocking gmail and google voice. It's possible that some other notification would toggle one of the other led variables and this won't help.
If you have any issues with this please let me know and I'll see what I can figure out. If this has helped you please click thanks; I'm new here and could use some street cred.
EDIT: You can solve problem 2 by creating a new Profile with context State>Display>Display State set to Off, and adding in the other secondary (ie night time) contexts. Call the same task you called for the first profile.
EDIT: Oops, forgot to mention, this is on a Verizon Galaxy S3, I assume it's the same for the other carriers, but I have no way of testing it.