Dimming the screen - Android Head-Units

My android HU is capable of dimming the screen automatically when i turn on the headlights. However, it is still too bright even after dimming. Is there a way to adjust the dimmimg level after the HU is triggered by the headlight signal that is connected to the illum wire?
Thanks
Sent from my SM-N920C using Tapatalk

Hey,
You can just install Lux app and it will adjust the brightness depending on time during the day.

Hi staticx1,
i read this from Play Store:
■ [Paid Only] Use your ambient light sensor or camera(s) to read in ambient light.
So, maybe the pay version of Lux is able to take the ambient light level from the usb front camera?

popeye70 said:
Hi staticx1,
i read this from Play Store:
■ [Paid Only] Use your ambient light sensor or camera(s) to read in ambient light.
So, maybe the pay version of Lux is able to take the ambient light level from the usb front camera?
Click to expand...
Click to collapse
You don't need a camera. Inside the app options you can define brightness based on time in day. It can read the location from your car GPS and determine what needs to be the correct brightness level. Make sure you choose night node and automatically night mode inside the options.
gl

staticx1 said:
You don't need a camera. Inside the app options you can define brightness based on time in day. It can read the location from your car GPS and determine what needs to be the correct brightness level. Make sure you choose night node and automatically night mode inside the options.
gl
Click to expand...
Click to collapse
Ok thanks
But i would like to know if a front usb camera can be viewed like a "system camera" by android system and other apps, because i think that real ambient light measurement is better than gps based sunrise and sunshine calculation...

popeye70 said:
Ok thanks
But i would like to know if a front usb camera can be viewed like a "system camera" by android system and other apps, because i think that real ambient light measurement is better than gps based sunrise and sunshine calculation...
Click to expand...
Click to collapse
From what I've seen, you cannot use usb camera as the android system camera...

if you want to use Lux, you can define it as the following settings:
http://imgur.com/a/SWidl

Still have not gotten this to work. I'd love to see a video of someone showing me this working properly. I'm going nuts w /lux

TT_Vert said:
Still have not gotten this to work. I'd love to see a video of someone showing me this working properly. I'm going nuts w /lux
Click to expand...
Click to collapse
me two.... not working for me. Its not changing no matter what time I set...

I'm just using "screen filter" with nova launcher. I double tap the screen for dimming and one more time for regular brightness.
You could also use tasker for that but it's overkill in my opinion.

There's also the option of Twilight - from what I understand works in a very similar way to Lux: https://play.google.com/store/apps/details?id=com.urbandroid.lux

Related

Automatic backlight broken or just badly designed?

As far as the automatic backlight setting goes, it is my understanding that the phone should check how bright (or dark) it is, and adjust the display brightness accordingly (brighter when out in the sun, darker when sitting indoors / dark rooms).
However, it seems to me it just sets the backlight at ~40% and that's it. I went out into the sun with my HD2, and the brightness didn't change and I had trouble seeing what was on the screen.
Is there some kind of way I could test, if the light sensor is working? Or is this setting simply badly designed and I should set the brightness myself?
I'm currently running latest Energy ROM (23569 Cookie May 09) but it was the same with the stock ROM, so I don't think it's related.
PS. A little side question, if I may; if I perform task 29 before flashing... do I still need to do a hard reset after flashing a new ROM?
...in the very least... are there any apps that make use of the light sensor?
Well I know the acctualy percentage in the settings never changes when its on auto (atleast not for me)
But I can clearly tell a difference between being in a dark room and the backlight being on low
to being in the sun and it on max.
Ive also never had trouble reading the screen, the screen is always plenty bright enough.
Prehaps you've got a bad one?
Shaamaan said:
...in the very least... are there any apps that make use of the light sensor?
Click to expand...
Click to collapse
I know an app that can measure the amount of light in lumers.
lonelykatana said:
I know an app that can measure the amount of light in lumers.
Click to expand...
Click to collapse
Care to share the name of that app?
Also, it's difficult for me to say if the screen is busted or not. On max brightness (as opposed to the automatic setting) it's a lot more comfortable to look at in the sun, albeit indoors it's OK on any setting really.
EDIT: I don't suppose the automatic setting can be tweaked for better performance via some registry changes?
Shaamaan said:
Care to share the name of that app?
Also, it's difficult for me to say if the screen is busted or not. On max brightness (as opposed to the automatic setting) it's a lot more comfortable to look at in the sun, albeit indoors it's OK on any setting really.
EDIT: I don't suppose the automatic setting can be tweaked for better performance via some registry changes?
Click to expand...
Click to collapse
I think it's called Lumos.
Try searching for it.
You certainly can test it. Just cover the light sensor (upper left corner above the screen) with something. I don't recommend thumb, as you might press 'start' button. You will also need any application with white background.
The brightness should clearly drop.
Auto only sets the brightness from 20% to 60% (or so it seems). But the effect is clearly visible.
Dr.Sid said:
You certainly can test it. Just cover the light sensor (upper left corner above the screen) with something. I don't recommend thumb, as you might press 'start' button. You will also need any application with white background.
The brightness should clearly drop.
Auto only sets the brightness from 20% to 60% (or so it seems). But the effect is clearly visible.
Click to expand...
Click to collapse
No change at all.
I'll restore the stock ROM to see if it's a firmware issue, and I'll check that Lumos application.
EDIT: Lumos clearly detects light changes and works well. Seems it's either something to do with Energy ROM after all or possibly I'm just blind and I can't see any changes. I'm still going to check the stock ROM, just to be safe.
BTW, once more, can someone tell me quickly if hard resets are needed after task 29?
EDIT 2: OK, it DOES work after all, I'm just blind; the change however, on the automatic settings, is minimal. I actually had to put the phone under a light-bulb, as covering the sensor didn't really work. I wonder if it should be calibrated like the g-sensor...
night time
i think the day time brightness is fine but the night time setting is far to bright. i would love for this to be customizable as well
rdbthrgnaRDg
Dr.Sid said:
Auto only sets the brightness from 20% to 60% (or so it seems).
Click to expand...
Click to collapse
Can this range be increased?
For indoor use the auto-adjust works fine for day/evening/night, but outside I always need to turn off the auto-adjust, so it can go to 100%. When back indoor again, then switch to auto again and so on ... and so on ... and ...
Just installed .NET CF + Lumos and will see how it works out.
.NET CF for laptop and automatic install to HD2 via ActiveSync:
microsoft.com/downloads/details.aspx?FamilyID=E3821449-3C6B-42F1-9FD9-0041345B3385&displaylang=en
Latest Lumos v10 RC2:
forum.xda-developers.com/showthread.php?t=450318

My screen is too bright, what will make it dim below "10"?

Even on the dimmest settings, the Vibrant is too bright for me in bed, where the light disturbs my wife.
It seems that, with root, you can lower the brightness further - at least on other phones. Is there any way to do this with the Vibrant?
Thanks!
The "Dimmer" app will toggle it from your current brightness down to 10 but if you find something that will go lower let me know.
It has an automatic brightness control based on input from the sensor. You may need to disable this in the settings too, but I would think it would be automatically dimming itself already in a dark room.
Dallasalien said:
It has an automatic brightness control based on input from the sensor. You may need to disable this in the settings too, but I would think it would be automatically dimming itself already in a dark room.
Click to expand...
Click to collapse
Right, but that doesn't get dim enough in some situations and the minimum brightness you can select manually is 30. "Dimmer" will take it all the way to 10 but I would like to see something that would take it to 1 or 2.
I agree. It's too bright in low light situations.
If you find a solution please post it.
Try the Screen Filter App from the market. You can get UNBELIEVABLY low brightness. Which means much better battery.
+1 on screen filter. New version now dims taskbar too.

Issues and initial thoughts - Gyroscope and Light sensors not working?

Well the good thing is, I already got the Galaxy Note, yeah!
I have a couple of findings which I would like to get the
opinion on from other Galaxy Note users.
My packaging states "BLUE". But the device and back cover is all black?
Does anyone have a blue one, or know why it is called blue?
If I go under Settings / Display and try to calibarte the gyroscope
it seems that it does not work at all. The big calibration ball stays always in
the middle.
Also the setting for automatic brightness control seems not to work.
The display brightness does not change.
I also cross checked this with AndroSensor https://market.android.com/details?id=com.fivasim.androsensor
Which shows constant 10.0 lux for light sensor
and 0.00x readings for gyroscope. Strange
Can someone else verify whether this is a common issue, or
whether it is only my Note :-(
Btw. does anyone know how to verify whether the GNote can use Glonass?
I did a calibration and it moved around a bit and then stopped in the middle and said that it had completed.
As for screen brightness, if I put a tick in the box for 'Auto' it makes the screen quite a bit dimmer. Take the tick out of the box and I can adjust the brightness from dim to full without a problem.
So, sounds like you may have a dodgy one.
In terms of the light sensor. It is usuall that it dims when you activate automatic control.
The question is, does the brightness change automatically while you have it active.
E.g. Be in a bright room and turn off the light. The screen should light up. Turn the light on and the screen should dim again. Does yours do that?
Take your sim out of the phone or turn mobile data off and try to get a GPS signal on maps or navigation. Should tell you if Glonass is working. Someone already tested and said it works fine.
Greatbape said:
Take your sim out of the phone or turn mobile data off and try to get a GPS signal on maps or navigation. Should tell you if Glonass is working. Someone already tested and said it works fine.
Click to expand...
Click to collapse
Why/How does that show that Glonass works?
My understanding is that it's supposed to be normal GPS and not AGPS. Navigation in most android phones needs data to be accurate. Not sure if that's the case with glonass. This explains glonass pretty well if anyone is unfamiliar with it.
http://www.oxts.com/default.asp?pageRef=134
Yerry said:
In terms of the light sensor. It is usuall that it dims when you activate automatic control.
The question is, does the brightness change automatically while you have it active.
E.g. Be in a bright room and turn off the light. The screen should light up. Turn the light on and the screen should dim again. Does yours do that?
Click to expand...
Click to collapse
I think you have that exactly backwards. In a dim room the screen should dull down so it doesn't blind you, and in a bright room it should brighten up so it's visible.
Greatbape said:
My understanding is that it's supposed to be normal GPS and not AGPS. Navigation in most android phones needs data to be accurate. Not sure if that's the case with glonass. This explains glonass pretty well if anyone is unfamiliar with it.
http://www.oxts.com/default.asp?pageRef=134
Click to expand...
Click to collapse
I just got done reading the specs, it says it has GPS withwith AGPS support. Sounds like a standard GPS.
reinbeau said:
I just got done reading the specs, it says it has GPS withwith AGPS support. Sounds like a standard GPS.
Click to expand...
Click to collapse
Don't forget the Note (like the Galaxy Nexus) also has a 'Barometer' to aid GPS positional data.
As a Barometer also predicts height it will eliminate error margins for the Z-axis with GPS, which on other phones can be quite high.
reinbeau said:
I think you have that exactly backwards. In a dim room the screen should dull down so it doesn't blind you, and in a bright room it should brighten up so it's visible.
I just got done reading the specs, it says it has GPS withwith AGPS support. Sounds like a standard GPS.
Click to expand...
Click to collapse
Yes I wrote it backwards. And even more strange it suddenly works on Note.
Even though it is by far not as smooth line on a Xperia X8
In terms of GPS, I still dont know how to verify whether Glonass is used or not.
But I am getting 12 satelites used indoors and 16 outdoors. Plus on the box it states GPS/Glonass.
So I guess it uses Glonass. Which is bretty cool.
Remaining issue for me is gyroscope which seems not to work based on the calibration screen.
My findings with androsense and the light sensor are as follows
real bright light 1000 lux (right next to the light bulb)
normal room light 100 lux
dim room 10 lux
it seems that the current light sensor only has low medium and high settings. with no scaling in between.
i dont know if this is hardware or software related. someone else will have to give an answer on that, but it would make sense why a lot of other people are complaining about the auto dim working so badly. if someone could find a way to give the scaling a little higher resolution, it would prolly make the auto brightness work a lot better.
Mi also thought the ball not moving during calibration was a problem....but it works fine....i installed asphalt 6....went to the garage....the garage can be explored using the gyroscope.....
Install Asphalt 6....check it out....I think its not available for the note in the Market....but its available for free in Samsung Apps....its awesome...
hope this helps..

Auto brightness not working correctly

When I'm in a light room the screen goes brighter but if I walk into a darker room, the screen doesn't dim unless I lock and then unlock the screen.
Anyone else having similar issues?
Yep got the same here. Thought I had a faulty ambient light sensor but obviously not.
Sent from my SM-G935F using Tapatalk
Just tried it by covering the light sensor to make sure, no problem here (G935F). My only concern related to brightness is that the s7 just has auto brightness, but no adaptive brightness.
Uncheck the auto box and recheck. Then don't touch the slider. It's usually because in marshmallow the slider moves with the auto bright and most people touch it which makes it hold position.
jackdforme said:
Uncheck the auto box and recheck. Then don't touch the slider. It's usually because in marshmallow the slider moves with the auto bright and most people touch it which makes it hold position.
Click to expand...
Click to collapse
There seems to be a bug somewhere still. I just tried to move the slider while auto brightness is ticked and to cover the light sensor afterwards again and it still worked and to my surprise it even took into account that I lowered the brightness and took also a lower brightness at the covered state and took my initial setting after uncovering, pretty nice, so there is indeed still adaptive brightness. After ticking und unticking auto it went back taking the default steps for brightness as before.
Having the same issue here
Definately not touched the slider.
Also, I have tested the light sensor and it appears to work fine so definately a software issue. Though I imagine we will see some software updates to fix bugs shortly after the official release date.
So you can adjust the slider with the box checked and get various levels of auto? Does it learn?
jackdforme said:
So you can adjust the slider with the box checked and get various levels of auto? Does it learn?
Click to expand...
Click to collapse
Yes.
I can't tell for sure, when I change further steps the previous seems to stick, at least to some extend so there is a logic behind it, but I can't tell for sure if it really is based on each step and sets it accordingly or if it's just changes the range it operates in. Anyways I'm a happy camper.
Also, I could reproduce the device not changing the brightness, when I put it to full at darkness it won't move anymore in auto. But as soon as I lower it again it will also change accordingly again, maybe at those with the stuck brightness the min brightness is only raised, but not lowered anymore, but just an assumption and doesn't help anyone atm unfortunately.
Use lux in play store
Sent from my SM-N920W8 using Tapatalk
https://play.google.com/store/apps/details?id=com.velis.auto.brightness
This is the first Galaxy phone I had, that Auto brightness actually works the way I like it.
It seems to be working fine now. It just takes a few seconds for the screen to dim (maybe I was being impatient).
After testing it further it's actually really good auto brightness.
It works, just takes some time to adjust to the lighting. Maybe the default settings are set to a certain time. Maybe with root we can adjust this..
AngioNicholai said:
It works, just takes some time to adjust to the lighting. Maybe the default settings are set to a certain time. Maybe with root we can adjust this..
Click to expand...
Click to collapse
It seems to only do it quickly when the device is lay down (as 954wrecker said). Maybe Samsung did that so it doesn't annoy you when using your phone.
this is definitely a bug imo... the auto brightness doesn't change for me either...
CuBz90 said:
When I'm in a light room the screen goes brighter but if I walk into a darker room, the screen doesn't dim unless I lock and then unlock the screen.
Anyone else having similar issues?
Click to expand...
Click to collapse
I also have an auto briteness issue, when I disable AutoBrite and set it manually about half my apps override the setting and enable AutoBriteness in the app's screen usually dimming the screen? SpadesFree one example and I do not see an override in the app.
Confimed that I'm having same issue, auto brightness not adjusting and slider not movingoing. Have to move it manually
Same issue. It needs to be fixed manually by editing services.jar (root needed)
Nothing else will work. None of google play apps will help with that issue. Does not matter what you do, it will always dimming if you don't fix it in framework.jar
Try it out: http://forum.xda-developers.com/s7-edge/development/auto-brightness-bug-try-fix-t3339858

Auto Dimming not working

My moto g4 is not auto dimming (at dark) or going to full brightness (in sunlight) automatically
I checked and the sensor seems to be working (using a lux app)
Any idea what's going on?
Thanks!
lowspeed said:
My moto g4 is not auto dimming (at dark) or going to full brightness (in sunlight) automatically
I checked and the sensor seems to be working (using a lux app)
Any idea what's going on?
Thanks!
Click to expand...
Click to collapse
Not at the moment. I don't normally use it but I did enable it for a test. It worked fine when I moved from dark to light and back so I can confirm it does work.
Sent from my SM-T530NU using XDA-Developers mobile app
Silly question, but do you have 'adaptive brightness' enabled in the display settings?
rp-x1 said:
Silly question, but do you have 'adaptive brightness' enabled in the display settings?
Click to expand...
Click to collapse
Not silly at all. I tried it on the Moto 2nd gen, 3rd gen and now the G4 and I never liked it on any of them. I have had better luck just setting mine on one setting and sometimes when I'm on the golf course or something in full sunlight, I'll bump the brightness up a little. It just never seemed to be the right brightness so I gave up on it.

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