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-   -   Give n900 screen a yellowish tint (https://talk.maemo.org/showthread.php?t=92383)

tfj 2014-01-13 17:19

Give n900 screen a yellowish tint
 
I would like to give my N900 screen a distinctly
yellowish cast, to make it easier on the eyes at
night, and less disruptive of my melon-tonin'.

Yes, I've tried scribbling it with a yellow highlighter
pen, but the 'ink' remained liquid and rubbed off too
soon.

A piece of yellow cellophane or similar film should work,
but I'm not sure how to make it sticky yet optically
clear (rubber cement, rolled very thin, may work).

The ideal way, though, may be altering some display code,
to give just the tint desired. Is there some n900-
related program that can do this (there's one thread giving
details about this, but it's for the n9; there's also mention
of "screen filters", overlaying a transparent image, for
Android).

pichlo 2014-01-13 18:01

Re: Give n900 screen a yellowish tint
 
There was a thread reecently on the very same topic. Try to see if it helps you:

http://talk.maemo.org/showthread.php?t=89858

anthonie 2014-01-13 18:11

Re: Give n900 screen a yellowish tint
 
Or try some old school non-digital hacking:

http://www.alibaba.com/product-gs/51..._Film_car.html

Estel 2014-01-13 18:22

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by tfj (Post 1406147)
Yes, I've tried scribbling it with a yellow highlighter
pen, but the 'ink' remained liquid and rubbed off too
soon.

W-h-hat? :eek: Sorry, I know this post is useless, but I'm actually too speechless to elaborate more.

I just thought, that almost nothing in sphere of N900's hardware modifications can so much surprise me. I was wrong. So. Damn. Wrong.

mr_pingu 2014-01-13 19:37

Re: Give n900 screen a yellowish tint
 
Maybe you can try to get f.lux or redshift working on maemo. Works really great on my jailbroken iTouch. (Don't shoot me for having an half eaten Apple)

pichlo 2014-01-14 11:34

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by anthonie (Post 1406166)
Or try some old school non-digital hacking:

http://www.alibaba.com/product-gs/51..._Film_car.html

That's actually not a bad idea. Another option is something like this:

http://www.amazon.co.uk/Prince-Lionh...cm_cr-mr-title

It is designed as a sunscreen for car windows. A plastic foil that sticks to the window by pure static force and holds tight as a tick (i.e. does not let go, can withstand opening and closing the window etc). Feel free to read my review. I've used it for over three years without a glitch.

It is a bit large but can be cut to size to fit a phone screen. The tint is light brown, not blue as in the Amazon picture. And it can double as a scratch protector too!

Of course, they may be similar products already tailored for mobile phone screens. Just have a look around.

elros34 2014-01-14 17:20

Re: Give n900 screen a yellowish tint
 
1 Attachment(s)
tfj, that's a great idea. I made test application - it works for not fullscreen windows.

tfj 2014-01-15 14:49

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by Estel (Post 1406172)
W-h-hat? :eek: Sorry, I know this post is useless, but I'm actually too speechless to elaborate more.

I just thought, that almost nothing in sphere of N900's hardware modifications can so much surprise me. I was wrong. So. Damn. Wrong.

I never removed the original protective film you're supposed
to peel off, so there's protection there. Some kind of yellow
marker may dry properly. Isn't the screen just glass, or is there
some sensitive circuitry or film on the surface?

Estel 2014-01-15 15:54

Re: Give n900 screen a yellowish tint
 
The outer layer is integrated (as in - you won't disassemble it without breaking it beyond repair) with digitizer, aka "touch layer".

zlatokosi 2014-01-15 17:09

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by tfj (Post 1406614)
Isn't the screen just glass, or is there
some sensitive circuitry or film on the surface?

There definitely is a film on the surface (because mine is almost completely peeled off already), I assume it's some sort of scratch protection - because the areas without the film scratch easily.

I would advise a software fix over a hardware one - unless you know you'll never need full brightness.

rfeese 2014-01-16 19:18

Re: Give n900 screen a yellowish tint
 
I would think you could do this using xgamma, if there was a port of it for maemo. In debian, it is included in the x11-server-utils package.

lonk 2014-01-18 04:45

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by elros34 (Post 1406387)
tfj, that's a great idea. I made test application - it works for not fullscreen windows.

you can do something quite cool with this which I found out by accident :). do this:

1. open kmplayer and play a video (doesn't work with mplayer or other)

2. open xterm and make sure it's inverted colors/black background

3. type ./nlcdtest 20 25 40 140

4 enjoy :)

Estel 2014-01-18 23:00

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by lonk (Post 1407221)
1. open kmplayer and play a video (doesn't work with mplayer or other)

I wonder why? kmplayer is "just" a front-end for mplayer, isn't it?

elros34 2014-01-19 09:52

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by Estel (Post 1407407)
I wonder why? kmplayer is "just" a front-end for mplayer, isn't it?

For mplayer and gstreamer
Quote:

Originally Posted by lonk (Post 1407221)
./nlcdtest 20 25 40 140

Awesome:)

tfj 2014-01-21 17:29

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by pichlo (Post 1406164)
There was a thread reecently on the very same topic. Try to see if it helps you:

http://talk.maemo.org/showthread.php?t=89858

Yes, that's the one that talks about a transparent image overlay;
the other main thread goes into detail about changing values in a
mce file, but I think it's for n9/harmattan, and not n900/fremantle.

tfj 2014-01-21 17:32

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by anthonie (Post 1406166)
Or try some old school non-digital hacking:

http://www.alibaba.com/product-gs/51..._Film_car.html

Just the thing - but how do you buy from these Chinese agglomerates?

tfj 2014-01-21 17:44

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by Estel (Post 1406634)
The outer layer is integrated (as in - you won't disassemble it without breaking it beyond repair) with digitizer, aka "touch layer".

If that's correct, inking the bare surface may be a bad idea. I thought
the digitizer might be under, or even melted into, glass.

sixwheeledbeast 2014-01-21 18:42

Re: Give n900 screen a yellowish tint
 
Is there not a tinted screen protector available?

Estel 2014-01-23 15:47

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by tfj (Post 1407984)
If that's correct, inking the bare surface may be a bad idea. I thought
the digitizer might be under, or even melted into, glass.

It is - "melted" into plastic/glassy thing. You won't damage it by inking the surface, it just sound a little... Harsh, for a surface, that you can't replace without replacing whole digitizer.

/Estel

DA5 2018-07-24 04:10

Re: Give n900 screen a yellowish tint
 
Quote:

Originally Posted by elros34 (Post 1406387)
tfj, that's a great idea. I made test application - it works for not fullscreen windows.

elros34 I was wondering if you still have the source for your nlcdtest application, would you share it?

(Sorry for reviving ancient thread)


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