I'm wondering if there is any hack for the led lights
This link may help you. Looking real fast you are limited in color choice and obvious you need root to do this
http://forum.xda-developers.com/showthread.php?t=708188
like i said in the post he linked:
the only way to change the color of the led is to modify it on a hardware level.
as in, you will need to take apart your phone, and desolder the pre-existing led, then solder on a new one.
you do not need root (it's all hardware, no software involved)
the led you solder on will be the color it stays unless you solder on a new one
you cant solder on a tri-color led and then have it change colors via software (there is simply no hardware support for that action, it would require a whole new circuit board)
if you feel up to the task the led's are just some 0603 high-intensity SMD (surface mount display) LED's. (high-intensity is important, unless you want the lights to be dimmer). I do this type of stuff all the time, so if you need any help just ask.
Related
Out of random curiosity, I've been wondering if anyone has gone as far as to try and replace any of the lights (i.e: notification LED, call/end buttons, trackball, soft keys) in our phone? I was just starting at the lit up buttons on the front of my phone and wondered if it has been done and what it would entail. Keep in mind the most I've taken my Eris apart has been removing the battery cover so I probably wouldn't be the first one to take a stab, but if anyone else has any input, bring it on .
This is the closest that I've seen to what you might be asking:
Trackball Transplant
At least it shows some annotated pics of taking the phone apart.
Hope that helps. Cheers!
My question....
Are the LED's under the capacitive buttons controlled by individual drivers or is it one driver for all 4 LED's. Also is the driver(s) replaced when I flash a new ROM and Kernel?
My reason.....
I got a replacement Rezound, and the phone is flawless other than 1 LED. All the buttons are nice, bright, and red, but the home button is barely lit up. Very dim. When I use the dim LED script the home button basically turns off.
I don't wanna deal with getting another that may have real problem, when this is just more of an annoyance. My Dad is the boss at a factory that builds computer electronics for all kind of crazy stuff, and said he could have someone replace them properly. I've ordered red 0603 SMD LED's to replace them all. My only concern is he mentioned it could be a bad driver for that LED, and make all the replacing pointless. So if they are all controlled by a single driver it would be a bad LED.
Or do I just not know what the hell I'm talking about?
EDIT: This should be in Q&A. Mods please move.
Honestly, I don't know but I suspect it is just an individual LED. Not on a computer right now but there is a thread on this forum with high res pics showing the LED color mod that might help make the process easier.
Sent from my ADR6425LVW using Tapatalk 2
I did see that thread. That's where I got the red LED idea, but his problem was pink buttons not really a possible burn out, or other issue. I could deal with them being pink if they lit properly.
probably a mis-aligned attachment on the pcb, or a bad led altogether.. if you want to take it apart you can probably replace the individual led, but you'll need some soldering expertise.
That's also what he thought bad connection. They have plenty of experience at his work, and all the right equipment. So I'm gonna send it there. I wanted to make sure there wasn't an individual driver for just that led before I wasted his employee or companies time.
Yes, sound like bad hardware for sure...good luck!
Hi Guys and Gals,
I have a question and I am hoping someone with some electrical/software knowledge can chime in and help me out.
I have an RK3066 based android Mercedes Double din unit and the RED LED from the RGB will not work. Blue and Green work fine it is only Red that does not work.
It used to work fine and then all of a sudden I enter the car one day and it's green, (I use a green and red mix to create orange which is the default Mercedes color)
Yesterday it magicall started working again after having not worked for 2 weeks and today it is gone again.
Green slider works
Blue slider works
Red slider makes no color changes and if green and blue are all the way down and red is all the way up the lights are off.
Can this be a resistor or it it software based, I know the kernel can control the LEDs and so on but I am leaning towards hardware related. Maybe a broken SMD resistor these Chinese units are so poorly designed.
Anyways if anyone has some info, it will be greatly appreciated.
God Bless
Same thing here....blue and green work but not red. Stopped working...came back...then went out again. It started after updating in march. I had an older version and wanted the standby timer. RK3066 800x480 KLD unit. I've tried reverting the mcu. Switched to the newest mcu. Reflashed rom. Which actually controls the rgb's?
So far from what I can tell is that the GPIO pin goes to the led resistor then to the led itself and I believe it is controlled via a voltage difference. for example 3v red 3.15 blue, 3.25 green (not actual figures)
What is confusing is that it came back for me then went out again, the dash is extremely hard to pull apart for the Mercedes, not to mention I have a full blown system in here and will have to remove quite a bit of product before getting to the headunit. I was hoping someone with higher software and hardware knowledge would chime in, but it seems like we are on our own. A lot of people on these boards will says "open it and try on your own" I am not sure but I believe that it is 1 resistor for all three colors, unless it is 3 individul leds which would require 3 resistors.
Mine also went out in March (I made no Rom or MCU changes prior to it going out) which is odd then it came back in april, can some software based date cause it to not functions? or can it be that just the red led is failing (defective).
I doubt that it is a resistor since the other two colors work fine and from what i suspect it should be 1 led (RGB) and 1 resistor for the (RGB) led.
Hopefully someone will let us know if there is a remote possiblity that it could be software based, if I was 100% certain that it is hardware based I will and would have already pulled out the unit.
Sounds to me like an intermittent hardware issue - a bad connection somewhere. More likely to be on a connector than a bad PC board trace or cold solder joint.
mike.s said:
Sounds to me like an intermittent hardware issue - a bad connection somewhere. More likely to be on a connector than a bad PC board trace or cold solder joint.
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Do you know if the unit is individual LEDs or is it one rgb led
If it is one led then it should have 1 resistor per led and in which case none of the colors should work.
Could it possibly be kernel based or the rk3088 board/chip itself?
I will pull mine out tuesday night and take a look at the leds to see what the are and get some pics. I ordered a rk3188 SoM and will also be changing over to that rom.
Awesome, please keep me posted. I'm gonna try a few things software wise.
Well I opened it up and almost didn't get it working again. The rgb leds have four legs ground and power for each of the color. My camera sucks so no pics but when changing colors in the elements screen if I select red the blue leds light up. Selecting green does green. Selecting blue goes dark. So I'm really thinking that it's software related.
dazedfive said:
Well I opened it up and almost didn't get it working again. The rgb leds have four legs ground and power for each of the color. My camera sucks so no pics but when changing colors in the elements screen if I select red the blue leds light up. Selecting green does green. Selecting blue goes dark. So I'm really thinking that it's software related.
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That happens if you have MCU 2.55 with the sound enhancement MCU version 2.22 works correctly.
if your headunit is still open, is there anyway you can send me the picture of the board and resistors, even if it a horrible picture, its still better than nothing
thanks
Sorry didn't save them. There weren't resistors next to each led but there was a group of them on the other side of each board so a bit of tracing would need to be done to track each one down. For the mcu my unit is KLD and i've tried every version listed here http://forum.xda-developers.com/showpost.php?p=61291848&postcount=14139 and none changed the way the elements act
It's probably already known by everyone that this phone packs an RG notification light (damn you, ZTE!) What's more, blinking seems to be fixed to solid and slow blinking, and it can only display RED , ORANGE and GREEN.
But, at least on ResurrectionRemix, there seems to be a way to turn on the two LEDs that we actually have with the console, and with a desired brightness:
su
echo 255 >/sys/class/leds/red/brightness
255 is the maximum brightness, but it ranges from 0 to 255.
Also, we can do a very nice shade of yellow using:
echo 255 >/sys/class/leds/green/brightness
echo 64 >/sys/class/leds/red/brightness
There are also a bunch of other parameters inside, but brightness is the only one I tested so far. I think we could use this to control the LEDs via a root-enabled app like LightFlow. Is it possible? It would improve a lot the LED quality.
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
XblackdemonX said:
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
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not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and green led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
Choose an username... said:
not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and blue led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
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Files inside the folder:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
KwesiJnr said:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
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I really miss the RGB led too. I never know when my notification is important or not.
XblackdemonX said:
I really miss the RGB led too. I never know when my notification is important or not.
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Yeah, bro. Coming from a One M8 with the same RG lights (used for about 2 years, previously a Nexus 5 which was RGB), you would understand
Most smartphones nowadays come with LEDs for the camera.
A lot of ROMS (stock and custom) provide a switch where these LEDs can be used as a flashlight.
Is it safe to use the camera LEDs as flashlight, on all ROMs, on all Devices? (generally said)
Is it safe to do so for a longer time?
Are there ROMs tweaked in a way the LEDs are brighter than normally and therefore having them on for some time will cause damage to them, because it is outside their normal operating voltage? Or are the LEDs limited in voltage/current hardwareside, so that longer use does no harm? (again, generally said)
If not, how do I find out, if the LEDs on a specific device can be used as a flashlight for longer time?
I am asking these questions not for a specific device, but in general.
I'm basing this answer on high beam torches.
The LEDs I would presume are built to be used quite a lot, especially on modern smartphones with high end cameras.
The LED will only go up to a set brightness that is set by the microchip it's connected to, and it will just stay on till the phone battery goes dead or you switch it off yourself, so unless you had phone connected to say a 50000mh powerbank, and left the LED on full and kept doing it none stop, which would eventually wear out the LED, for an hour or two here and there really can't see it being an issue.