Develop Bugs

Light on Track Pad?

This is a dumb question but it seems to me the track pad should have a light. Just wondering I'd it is supposed to but I have a bad phone.Does the dinc have an lcd for the track pad?
Sent from my ADR6300 using XDA App

The track pad doesn't have a light. The notification light is next to the ear piece if that's what you were looking for.

Cole119 said:
The track pad doesn't have a light. The notification light is next to the ear piece if that's what you were looking for.
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Not sure what you mean. Just thought the track bitten should habr a lcd
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I understood what he meant...there isn't a light there...your notification light is at the top of the phone.
Sent from my ADR6300 using XDA App

my trackpad lights up black? No one else has this function?
But seriously, umm, there's no led or "lcd" in our trackpad. The optical trackpad was the replacement for the trackball (which on several devices..nexus one, g1, hero light up).

Ha ha. Maybe mine lights up black also. If so the problem is that the light is stuck on

marcmarshall said:
Ha ha. Maybe mine lights up black also. If so the problem is that the light is stuck on
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Seriously??
The trackpad uses light to devtect movement so obviously there couldn't be a light in it. Think of it as a eye
Sent from my Incredible using XDA App

I wear a lantern helmet to look at my track pad.

It uses an infrared light, can't see it to the human eye.

The droid incredible does have a light. Thats Why Its called An optical trackpad. Their is a small infrared light in the center of the track pad that reads your finger movements. Kind of like the red light you see on the bottom of some modern computer mouses. If you are in a dark room and start using the track ball; you tilt the phone at an angle you can see a red light inside. You can also see it as you are unlocking the locksceen.

mikeacela said:
The droid incredible does have a light. Thats Why Its called An optical trackpad. Their is a small infrared light in the center of the track pad that reads your finger movements. Kind of like the red light you see on the bottom of some modern computer mouses. If you are in a dark room and start using the track ball; you tilt the phone at an angle you can see a red light inside. You can also see it as you are unlocking the locksceen.
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The glass dome that makes the center of the optical pad is a very very dark red tint, the same that remote controls have covering their infrared leds.

mikeymop said:
The glass dome that makes the center of the optical pad is a very very dark red tint, the same that remote controls have covering their infrared leds.
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I know Its dark red. I said that their was an optical light inside. That is what tracks the movement. You cant see it when the phone is off. If you are in a dark room and look at the track pad while unlocking the phone, you can see it. You can also see it right after you use it, then it dims when not in use.

Concentrate harder

Infrared light is not visible to the human eye so maybe ur seeing a leak of light from the screen
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superchilpil said:
Infrared light is not visible to the human eye so maybe ur seeing a leak of light from the screen
That's a possiblility. But I'm still most posative that I see a light stemming from a small optical diode slightly below the trackpad.
Sent from my Incredible using XDA App
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Sent from my ADR6300 using XDA App

What actually tracks the movement is a bad quality video camera and not the infrared light itself... The video lens reads the imperfection of you're skin and that's what makes it work if you took something really smooth against it you wouldn't see any reaction.... But yes there is infrared light because video lenses can see infrared light.

If I rub my eyes real heard for a minute I can see my track pad light and my wifi signals.

luvit said:
If I rub my eyes real heard for a minute I can see my track pad light and my wifi signals.
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Omg can u see ghosts too?? Lmao
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luvit said:
If I rub my eyes real heard for a minute I can see my track pad light and my wifi signals.
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WAOW ME TWO!
Sent from my Droid Incredible running SkyRaider 3.3 with King Kernel BFS #5.

For what it's worth, the infrared emitters in both the trackpad and proximity sensor are not perfect and do bleed into the visible red part of the spectrum. It's not beyond belief that somebody might be seeing this.
Sent from my ADR6300 using XDA App

[Q] What does this second red led means? (youtube)

Hi XDA people!
Can anyone tell me what this second red led means?
It come's and go's..
Youtube vid: because i'm new here i cant post links or something..
If you search on HTC Desire HD Second led on earpeace, you will find it.
Radio:26 .03.02.15_M3
Rom: Phunky's PNK12

Nope, can't find the link...
Here it is: http://www.youtube.com/watch?v=YUSD8ITT6jA
It is earpeace. ... LOL

Maybe this ?
http://www.iwantonly.com/watch/481867/
Hope I can link it

That's the vid.

Never seen that LED before... From what I know its not meant to have a LED there.
Sent from my Desire HD using XDA App

Looks like an IR-LED which might be the proximity sensor.
Edit: Tested it and the CM3602 proximity sensor reacts within 2 cm above the IR-LED.

It looks like the proximity sensor. Get another camera phone and have a look at your DHD from the other camera while making a call. The IR led will switch on.
Sent from my Desire HD using XDA App

olivierlee said:
It looks like the proximity sensor. Get another camera phone and have a look at your DHD from the other camera while making a call. The IR led will switch on.
Sent from my Desire HD using XDA App
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Ahh that'd make sense. Most digital cameras shift the colour of IR to visible spectrum. It's always fun showing this on laptops of unsuspecting people.
Sent from my Desire HD using XDA App

It's the proximity sensor. Cameras can pick up light into the IR wavelengths, which are not visible to the naked eye.
Point your camera at the end of your TV remote and press a couple of channel buttons... See it light up!
If you have some exposed photographic film, cut a couple of pieces just larger than your camera lens, turn one 90 degrees to the other and tape them over your camera lens. It won't pick up visible light, but it'll still catch Infra-red. Instant night-vision camera! Requires IR light to work, obviously

my prefered method to test tv remotes (or the batteries in it )
DN41

Haha thank you all!

DeathJester said:
It's the proximity sensor. Cameras can pick up light into the IR wavelengths, which are not visible to the naked eye.
Point your camera at the end of your TV remote and press a couple of channel buttons... See it light up!
If you have some exposed photographic film, cut a couple of pieces just larger than your camera lens, turn one 90 degrees to the other and tape them over your camera lens. It won't pick up visible light, but it'll still catch Infra-red. Instant night-vision camera! Requires IR light to work, obviously
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Thanks!
Learnt new thing.
Not about the exposed film but about the camera picking up the IR...

led..?

okay.. i looked through the manual when I got the phone and. it says theirs an led to the left of the speakers.. and I'm like no? lol its obviously to the right.. well I called someone on accident tonight and was looking at my phone and a little light lit up to the left of the speaker..anyone know what it's for? lol i is it only calls or what..
seems pretty useless =/ ide rather have a multi colored LED like the evo or evryother phone instead of two red leds lol
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I believe those are the camera & light sensors.
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Yeah dude those are totally you FFC (front facing camera) and the proximity sensor

Woah wtf CONFIRMED. Seriously just checked and although its very dim, there IS a light on the left corner of the speaker. Its a dark red. I called bull until I tested it. Here's how to see it:
Make a call in the darkest area possible ( the light is very dim) and look directly over the S in SAMSUNG. Interesting!
Edit: ok not an led you're right its the proximity sensor glowing red. If you cover it with your finger, the screen shuts off during a call
Epic-ly tapped from my Galaxy SII

Zoidpilot said:
Woah wtf CONFIRMED. Seriously just checked and although its very dim, there IS a light on the left corner of the speaker. Its a dark red. I called bull until I tested it. Here's how to see it:
Make a call in the darkest area possible ( the light is very dim) and look directly over the S in SAMSUNG. Interesting!
Edit: ok not an led you're right its the proximity sensor glowing red. If you cover it with your finger, the screen shuts off during a call
Epic-ly tapped from my Galaxy SII
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the sensors right next to it if look at it in a very well lite environment like outside on a sunny day. the light that glows red is to the right of the sensor
Sent from my SPH-D710 using xda premium

The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.

RainMotorsports said:
The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.
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lol jeez, okay, thanks. lol
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RainMotorsports said:
The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.
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Actually that's not totally correct. The hole directly to the right of the front-facing camera is a photodiode. When a call is in progress it acts as the proximity sensor, and all other times it is the ambient light sensor. To the right of that is an infrared LED - these cast a dim red glow that you can barely see in dim conditions, but if you were to look at it through the lens of a camcorder or digital camera (which are sensitive to infrared light), you will see that it lights up brightly - indicating a large amount of infrared. Skin is very reflective when it comes to infrared. When the infrared light coming out of the LED bounces off your skin and back to the photodiode, the system knows that the phone is against your head and turns the screen off.

Yeah somewhere in the back of my head i knew they likely worked in tandem. Obviously the proximity sensor needs a reciever to pickup the reflected wavelengths. Good info.

LED notification - different on White/Grey versions?

I'm now on my 3rd unlocked European One X for one reason or another - the white one's LED was just right - I could clearly see from a distance if it was charging or flashing. The two grey ones I've had both had barely visible LEDs, which I can't see when the phone isn't right in front of me or when it's at an angle. Is this a problem with some of the phones in gereral or is it just an issue with the grey model? Cheers.

Your 2 grey phones may have been defective, but in general white surfaces reflect more light than black/grey surfaces. This could have made it appear as though the lights were of differing brightnesses, or just that the white phone reflects more of the led's light.

Hi
pingu01 said:
I'm now on my 3rd unlocked European One X for one reason or another - the white one's LED was just right - I could clearly see from a distance if it was charging or flashing. The two grey ones I've had both had barely visible LEDs, which I can't see when the phone isn't right in front of me or when it's at an angle. Is this a problem with some of the phones in gereral or is it just an issue with the grey model? Cheers.
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My grey one is just the same regarding the LED, it's a pixel sized flash as it is shining through one of the "precision" drilled ear speaker holes, so you have to be almost looking directly down on it to see it, certainly in normal lighting conditions.
I expect the white is just a bit more translucent so you see a bigger area of light.
It is one of those silly design decisions that HTC seem to make sometimes! The LED should be behind the glass at the top right where the border is, in the same way the other sits the light sensor. I've always assumed it was last minute rushed job to add an LED, and as after thought they just had to place it where they could that didn't mean reworking the phones design.
Some phones don't have LEDs at all. I'm not sure why a notification LED has fallen out of fashion, I find it really useful, for example I leave my desk to make a drink or see someone or for a comfort break, then arrive back to my desk, a quick look down at my phone I know nothing arrived while I was away and it saves turning the screen on to check.
Regards
Phil

rob9 said:
Your 2 grey phones may have been defective, but in general white surfaces reflect more light than black/grey surfaces. This could have made it appear as though the lights were of differing brightnesses, or just that the white phone reflects more of the led's light.
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It must be a defect which happens to be on the 2 grey phones then because the difference is huge - one is barely visible and the other I can easily see from across the room (it's probably 30 or so times brighter). Hopefully my 4th One X, which is on its way, will be ok (the white one with the good LED has the wifi problem so that's going back).

Notification LED has a low brightness

I have noticed that the notification led is too much low in brightness. I I find it really difficult to notice it. So I have "ripped" a bit the covering grid (that protects the speaker) and now I can see the full LED, it is incredibly bright now!
Is it normal or can it be a production defect from your point of view?

gianmaxfactor said:
I have noticed that the notification led is too much low in brightness. I I find it really difficult to notice it. So I have "ripped" a bit the covering grid (that protects the speaker) and now I can see the full LED, it is incredibly bright now!
Is it normal or can it be a production defect from your point of view?
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It's normal only, it's behind the speaker protection mesh only

gianmaxfactor said:
I have noticed that the notification led is too much low in brightness. I I find it really difficult to notice it. So I have "ripped" a bit the covering grid (that protects the speaker) and now I can see the full LED, it is incredibly bright now!
Is it normal or can it be a production defect from your point of view?
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Hey my Honor and Huawei phones have a similar design of a very tiny notification LED behind the speaker grille. I am thinking of "ripping" the covering grid like you did but I am scared of damaging the phone or the display. What tool should I use and is it ok if safely and carefully done? As it is, the current notification LED is completely useless as you can't see it from 1 feet away.

xpclient said:
Hey my Honor and Huawei phones have a similar design of a very tiny notification LED behind the speaker grille. I am thinking of "ripping" the covering grid like you did but I am scared of damaging the phone or the display. What tool should I use and is it ok if safely and carefully done? As it is, the current notification LED is completely useless as you can't see it from 1 feet away.
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Don't rip it off as more dust will accumulate in your speaker. Notification led is less visible because of the dust which settles on that mesh. I have found one simple solution. Just buy one paint brush small one and poke it through that mesh & blow air over it. This worked for me. Dust will be removed and it'll become more visible. Hope it works for you too.