yashsingh1/xdaforums huggingface dataset:
[Nexus One General] RoboPhred:
LEDs don't get that bright either, not the ones you are thinking of. The LED in the nexus one is much brighter than "usual", and it's also much smaller.

(bold for emphasis)

http://en.wikipedia.org/wiki/Led#High_power_LEDs

Obviously the LED in the N1 is designed to deal with its heat under "normal usage" for a camera flash, and it probably can handle longer usages than the stock camera, but I wouldn't push it too far.

Edit:

If anyone wants to use some debug tools to find how many mA the phone pulls when the flash is on vs when its off, they could probably look up the usual heat generation for an LED of that size and see how 'safe' it is to run.
[Nexus One General] frandavid100:
I just contacted the developer on google wave, waiting for his reply now. Please give me your address if you want to be added to the wave.
[Nexus One General] TailsNeon556:
High power LEDs do get hot (i have an LED flashlight that gets quite hot after prolonged useage. it chews up batteries as well) and, ill bet that continued useage at high output can damage it.. and the camera... theres a reason that its not enabled stock
[Nexus One General] Unoid:
A way around heat and power is the cycle the LED at 30-60hz. I am unsure if the developer of N1 Torch could make it happen with software alone though.
[Nexus One General] oklahomatulsa:
Not sure if this helps but I have shot several videos and even changed a flat tire with my BB Storm LED. Besides draining battery, the only thing I worried about was space on mr MicoSd because I could only leave it on continuously in video mode.
[Nexus One General] Amdathlonuk:
I used mine this morning for about 5 mins and no problems.

Still works and so does the camera.
[Nexus One General] NexusDro:
Wait, so the Nexus One uses the High Power LED, not a regular LED?
[Nexus One General] meental:
no he was just using that quote to prove that some leds do produce heat. judging by the brightness i would say its relatively high power, and because htc might not have mounted the led on a heatsink big enough to keep it cool after prolonged use because they designed it for a camera flash, not a flashlight. so better safe than sorry.
[Nexus One General] erikku:
Ya! I had a K750 (flashed with the W800i firmware) that had as one of it's features, used the flash as a torch and a SOS beacon. :p
[Nexus One General] pikipirs:
SonyEricsson's XPERIA X1 (Win Mo device, HTC manufactured) has an app for the flash too. The app has two options.

First (dimmer) is mostly OK (not recommended for hours of use either).

Second (brighter) caused a meltdown of the LED's plastic holder if used for long enough. The holder melted over the vibrator motor, thus shutting it stiff and ruining it.
[Nexus One General] illusion:
Folks should stick to things they know. There are many VERY high power LEDs, such as those used as a flash. Depending on the application they end design may be to be used in short bursts because they create so much heat. LEDs waste LESS power through heat dispersion than a conventional lamp, but they do indeed create heat. I've seen LEDs that need a heatsink 10x their size to keep them cool. In the interest of size I would be willing to bet there is not enough heatsink on the LED flash to be able to use it for extended periods of time without burning it out.

comparing light sources from different phones as others have done here is silly. Unless you are positive that they are the same LEDs and that they have proper cooling behind them, then don't compare.

Source - Me. almost 20 years in the semiconductor design and test industry
[Nexus One General] xd_sjo:
Seconded. It's possible the LED is being driven at peak currents, or beyond too, which is fine for a short burst but not for prolonged use.
[Nexus One General] bbsydney:
I'm the developer of N1 Torch, and was pointed towards this thread. So I can offer some answers and insight...

Standard brightness is supported 'naturally' by the LED kernel driver. I tell it to come on, and it comes on until I give it a command to turn off.

High brightness is only enabled by the kernel for ~0.5 seconds before the kernel turns it off automatically. I simply send the command repeatedly to keep it on.

I had the app tested on a sacrificial N1, and the following were the results:

- On standard brightness mode, the torch ran for over 1/2hr continuously with no problems or heat issues detected.

- On high brightness mode, the torch was noticeably warm after 1/2hr, and there was a bit of a 'heat' smell coming from it. After a further 18 minutes (total 48 minutes) the LED started flickering of its own accord and was hot. After cooling, it resumed working normally (no idea how the lifetime was affected).

You can use your own judgement based on these results (and of course, YMMV due to manufacturing differences). I would be happy to say that standard brightness is fine for extended use (1/2hr at least), but try to limit high brightness to a few minutes at a time.
[Nexus One General] djxs2000:
I wouldn't chance it

This company called idea softworks claims they won't even come near the LED backlight because they dont want to chance breaking people's phones
[Nexus One General] rori~:
Thanx for the statement*!
[Nexus One General] ztm.000:
true. you cant just simply "burn out" the bulb. think of led flashlights? led headlights. led's are supposed to last years
[Nexus One General] bri3d:
Temperature generally exponentially decreases an LED's brightness and life, so I wouldn't be using high intensity mode for more than a few minutes at once if it gets hot (not to mention the negative effects of heating the rest of the device, especially the nearby battery!). That's why really high-intensity LEDs that are designed to be used for long periods of time always have a large heatsink bonded to them. Higher current also increases the rate an LED degrades at, although the effect is nowhere near as significant as temperature. But, if it's higher current causing the higher temperatures, the effect stacks and LEDs can get degraded quite quickly. If you take a quick peek around online, manufacturers generally publish T50 (half-life) charts that indicate how quickly their LEDs will degrade at a given temperature.

On the other hand bbsydney's tests of normal intensity seem to indicate no noticeable heating, which suggests that any visible wear to the LED will occur years after the N1 is obsolete (and your battery is worn out).

However, as a word of caution, I don't think anyone's done any research into how the LED is driven - I suspect the driver is probably something specced to the task which is intelligent enough not to be easily damaged, but there's always the possibility that whatever is driving the LED is not designed to do so for long periods of time (i.e. they're just sinking it off an I/O pin on something, assuming it won't be used much). And obviously sinking more current is going to have an effect on the battery no matter what.

All in all, I wouldn't use high intensity mode for more than a few minutes, but unless we hear about someone's device becoming damaged from regular mode (which I think is incredibly unlikely) I feel very comfortable using regular brightness for as long as I want.
[Nexus One General] stats101:
Erm.. the torch light application on my xperia x1 melted some component in the phone which stopped the vibration working - and mine wasn't the only one it happened to.
[Nexus One General] khaytsus:
Seriously, don't resurrect old threads, they eat brains and cause problems.
[Nexus One General] pakraider:
Seeing that Froyo natively lets you turn on the LED light for video recording, it's probably safe in moderate use (I wouldn't leave it on for half an hour at a time or something)
[Nexus One General] abdulchik33:
Hello,

I hope some body can help me,

iam used N1 Torch more than 1/2 hour,and thin LED Flash Camera nor working more!!!!

it will be work after cooling?or not?

and what i can do?
[Nexus One General] khaytsus:
You tell us; is it working now? I suspect not. Does N1 Torch have a "turbo" mode or something?
[Nexus One General] clustered:
Hi all,

In the 1st place, I afraid it will burn my LED but after using it many times, it really does help me anywhere in dark! I dont face any problem while using N1 Torch...

In a party, I will use N1 Torch with strobe for more than 1/2 hour... Girls will be around for that strobing light.. Haha! Its awesome apps! N1 Torch had no any problem! My LED working fine till now! Special thanks goes the N1 Torch developer bbsydney. Thanks bbsydney!
[Nexus One General] khaytsus:
Outside of camera use, the LED on the N1 is useful for a midnight run to the bathroom or such.. If you need a flashlight, buy one.
[Nexus One General] cicrockets:
On a side note: do any of the leds on y'alls phones turn noticeably blue after like 5 seconds on high brightness? Turning it off and back on fixes it for another 5-10 secs.

Can't exactly test it at this moment because High-intensity is broken on the newest nightly.
[Nexus One General] khaytsus:
Blue = bad.. It's being overdriven if it's blue. I use Tesla on my N1, and it appears to only have one brightness, although I haven't compared it to using the camcorder function light.. Anything that makes it brighter than that is a really bad idea for any length of time.
[Nexus One General] zer0day:
What exactly is it N1 Torch does that can cause problems with the LED? I wrote my own flashlight app and use it for minutes at a time and haven't noticed any problems but now I'm starting to wonder if my app can cause my LED to burn out.
[Nexus One General] vegetaleb:
With the N1 Torch app you have 2 levels, normal and extra bright.

Using the first one it's not very strong but it will work easily 1 minute before getting hot while the extra bright is very strong but heat fast,you can only use for 30 sec and let it cool down before using it again
[Nexus One General] houzuoguo:
I limited my TelsaLED application to turn on the LED for 1 minute maximum.

Once I attempted to turn LED on for few minutes and the LED got hot , since then I only turn it on for 1 minute every time.
[Nexus One General] xm0is3sx:
i left mine on for at least 10 mins and it never got hot im using teslaLED
[Nexus One General] galaxys:
I've used the 'Nexus One LED Flashlight' widget for a few minutes and did not notice any heat. But I don't plan on leaving it on any longer...
[Nexus One General] dogiedogie:
Just using the power draw widget and noticing the difference, you can see the LED flash on 'normal' [not high] uses ~250ma
[Nexus One General] emilinho:
I did it...

Actually, I managed to somehow burn my N1 LED... :o

I enabled the high intensity feature and after 10 seconds the LED turned blue and shut off after another 5 seconds. After this, it never returned to life. :(

This seems to contradict the opinions I read here, but it's true (and sad).

Oh well, life continues.

Cheers!
[Nexus One General] ap3604:
Is this covered under warranty?
[Nexus One General] iamwhoamnot:
ive used the flashlight widget for upwards of 30 minutes at a time while fixing things in the dark and never had any problems or felt any heat. However i noticed once when i had the light on max brightness for over 3 minutes it started to feel warm, so i turned it back to reduced brightness just to be safe. ive been using the flashlight since i got the phone last February and ive never had a single problem with it
[Nexus One General] peadarog:
Turn off the high intensity button and try it again.

Or have you already tried that?
[Nexus One General] Frito11:
I have used torch on extra bright for at least 5 min before with out any problems but I would not recommend using it for a long time
[Nexus One General] kanisdragon:
The flash on my G2 (HTC Desire) just stopped working. I used the Torch app for a few minutes at a time maybe once or twice a week for the last year or two, always on low brightness. Three months ago I used it for about 30 minutes walking back to my car on a dark beach. The battery on the phone went from 90+% to dead in that time.

When it died I had turned on torch and noticed the LED was much dimmer than normal. After about 5 seconds of being on it brightened for a second or two, then went dark. I haven't gotten it to turn on since. I've rebooted, power cycled, tried both torch and regular camera flash. It seems to be dead. Obviously it didn't burn out from overuse at the time I was using it (for 5 seconds) and the previous times I'd used it in the last week or so were as a regular camera flash. I never used it for more than 5 minutes except for that one time on the beach and I don't think I ever had it on high brightness for more than 60 seconds.

So yes, I think there's a risk with using the flash as a flashlight even minimally like I did, but it probably varies greatly by phone and LED. In my experience, LEDs aren't actually very reliable. I had a 5-LED flashlight where one LED varied from being completely out to flickering annoyingly so I returned it and the same thing happened to the replacement within a few months. One of the tiny LED lights on a "microscope" USB camera I bought also has problems and won't turn on until you turn the brightness to full, then it goes out when the other 4 LEDs are turned down to 75% or less.
[Nexus One General] cnalbant:
Flash LED does not make for easy breakdown. Very long-lasting equipment.

The problem is entirely hardware.

On the upper board; flash LED, camera, charging LED, headphone jack, etc. are parts.

When the socket loose connection provides a link between them, the parts do not work or works from time to time. Heat (Battery charging) may cause some factors like pulse. Exact solution to check the equipment off and sockets.

See here,

http://www.cnblnt.blogspot.com/
[Nexus One General] Closed Source Project:
I've been using mine on high brightness (CM7) for over a year now and it still works just like new. No discoloration or weakness. I only use it about 1 minute at a time, never longer than 4 minutes consecutively. Go for it.
[Nexus One General] Pommes_Schranke:
My N1 made a trip through the washing mashine a while ago. Camera, bluetooth and fm radio got fried. The flash was still fine. So I started using it whenever I like as long as I like. It might have gotten a little blueish but that's all. Used it many times for a few minutes now and it's still working like a charm.
[Nexus One General] mycnam:
My normal brightness stopped working somehow. All other torch apps on the market does not work, except the N1 Torch on high brightness. Is there two LEDs in the case, or it is the same LED with different voltages? I am quite confused if it is possible to burn out half of it...
[General Questions and Answers] cern:
Hi

Is there a possibility to record everything i do on my HTC Touch Pro2? (usb/wlan/bluetooth)

there are couple of programs like mymobiler or riverpast winmobile recorder etc. but these recordings suck, i think these are only recording pictures and make a movie out of them, so its stucking and i cant watch every step i do on my phone, just some...

so i need more fps

thanks
[General Questions and Answers] cern:
no idea?..
[HD2 Windows Mobile 6.5 Themes and Apps] mmmalas:
as the title says,

when i search on google in the built in opera, the browser does not direct me to the actual page, instead it takes me to google definition to the name I clicked on.

its not eve displayed in english.

anyone knows how to solve this?
[HD2 Windows Mobile 6.5 Themes and Apps] NZtechfreak:
Is that via the Google search bar in TouchFlo? That one takes you to stripped out versions of the web sites for mobile use and speed, which is annoying since Opera is fast enough already... If so then just use Opera to go to google.com and choose full HTML rather than mobile view, bookmark it/make it the homepage and search from there.
[HD2 Windows Mobile 6.5 Themes and Apps] mmmalas:
I know that its possible by changing the location in the registry.

but is there an easier visual way for doing that?

regards
[HD2 Windows Mobile 6.5 Themes and Apps] xwaiz:
It would be nice if there is an app to modify the order of the icons. Text based (identified by app name) is acceptable.
[HD2 Windows Mobile 6.5 Themes and Apps] stm555:
Icon Changer
[HD2 Windows Mobile 6.5 Themes and Apps] mkent_barbados:
The new 6.5.3 ROMs let you drag and drop...
[HD2 Windows Mobile 6.5 Themes and Apps] kdagia:
There is a great utility JWMD Apps.. You can change icons and arrange short cuts in folders to your priority. Search in the forum and you will find it
[HD2 Windows Mobile 6.5 Themes and Apps] HasanH007:
Where can you get this ROM for the HD2?

Thanks
[HD2 Windows Mobile 6.5 Themes and Apps] Tomen:
Push and hold Icon 2sec "move up" mabe helps
[HD2 Windows Mobile 6.5 Themes and Apps] mkent_barbados:
In the hd2 roms forum, I am using Miri's 6.5.x ver. 1.4 rom. Some small bugs (overlapping keypad icon at the bottom in the dialer etc.) but works very well and fast.
[HD2 General] ChefChaudart:
Hello,

Each time I upgrade the ROM, the first AvtiveSync creates a new folder on "My Documents" on my PC ...

It creates a new name each time !!??

How to prevent that ?

Cheers
[myTouch 3G, Magic General] :
I have a 32b HTC Magic (vodafone) [Hero ROM] rooted which has gotten a defective speaker. I'm still in my warrenty but I can't just send it in since its rooted.

Can someone please help me out how to restore it to its original state :( I've searched for two days straight for a clean file. No luck, please help guys.
[myTouch 3G, Magic General] :
please anyone
[About XDA developers] tito12:
Hi Mods

This option will probably help new members at least once until they use a bookmark and then it becomes redundant, but you surely know better.

Anyway, it is too wide and I get scrollbars all over, which is too much for my 10 inches notebook screen.

Can you please find a solution :)

Thanks in advance
[About XDA developers] Fallen Spartan:
Think this has been rectified as not too wide on mine ;)
[About XDA developers] orb3000:
All ok here, nice size!
[About XDA developers] tito12:
Hi

Happy for you ;) But it's not solved on mine :(
[About XDA developers] donnaw:
I have a Samsung NC10 10" and it is just exactly the right width. I mean the dropdown arrow is right at the edge beside the scroll bar. I am using Chrome but on IE it is still a bit too wide. Sounds like different browsers are the difference.
[About XDA developers] tito12:
Hi donnaw

I have exactly the same problem in IE too

There's no problem in the reply screen, nor in Wiki, neither in XDA portal, just where is the Jump to... option.
[About XDA developers] svetius:
What is your screen resolution?
[About XDA developers] orb3000:
Here looking just great!

Remember those of us are not too young and having to use glases, so we prefer bigger letters :)
[About XDA developers] JAguirre1231:
I might think that statement over. You may find a double meaning there
[About XDA developers] orb3000:
Lol

Damm right!

Edited my post:D
[About XDA developers] JAguirre1231:
I'm going to keep my post unedited so it will be documented forever :b
[About XDA developers] Fallen Spartan:
Ah, but then I may edit it at the request of Orb lol ;)
[About XDA developers] tito12:
Hi Svetius

1024 X 600, and I mean only pixels, nothing else :D
[About XDA developers] orb3000:
You see?

It´s always cool to be friend of Mods:cool::D

Lol!

Please do

:)
[About XDA developers] Fallen Spartan:
I edited post as per your request......:p
[About XDA developers] JAguirre1231:
I liked it the old way so I fixed it, feel free to re-edit it. Won't revert it this time, don't need a ban
[About XDA developers] orb3000:
Thanks:)

:eek::confused:................
[About XDA developers] JAguirre1231:
I preferred the old quote better, so I decided to keep it.
[About XDA developers] orb3000:
But I don´t:rolleyes:
[About XDA developers] JAguirre1231:
Darn, stylez re-edited it
[About XDA developers] tito12:
Hi Guys (Mods and Friends of Mods)

I really don't mind my thread to be be a playground for you :D as long as you spare one minute on this issue, please help me get rid of this scrollbar

Reminder: my screen res. 1024 X 600
[About XDA developers] svetius:
We are working on a forum redesign that should have no scrollbars for anyone! Please bear with us for a bit.
[About XDA developers] tito12:
Hi Svetius

Thank you for the answer, please continue your great work :)
[General Questions and Answers] Gandhi70:
hello,

can someone give me a hint, how i can change the duration that the windows 6.5 unlock screen is displayed?

right now, my device turns itself of about 3 seconds after the unlock screen is displayed.

i would like to increase this duration to at least 10 seconds.

in my energy options, the blank screen option is set for 3 minutes.
[Android Software Development] smoker46:
hi friends!!!

i have a little request!

i have a sunno hdi with windows mobile 6.5

cpu strongarm samsung s3c22443

ram 128

rom 256

can i install android on it?

can you help me? i don't know much on android so i ask!

:D

i'm sorry for my english i'm italian!:rolleyes:
[Android Software Development] stefanux:
I'm afraid

Hey man I'm sorry I do not think it will work, you have a ARM9 based chip, ARM11 is not only performance but use more complex instruction set, java too, android is linux patched kernel with libc and java stuff (D.VM). May be you can point to linux without android (GPE or QTopia), useless.

Ciao te hai un chip basato sulla tecnologia ARM9, questo indica che non hai lo stesso set di istruzioni del ARM11, android si basa su un kernel linux con programmi scritti in linguaggio java che viene eseguito da una D.VM questa ha bisogno del supporto (oppure emulazione) del suo set di istruzioni. Esiste una versione del kernel di linux, che trovi qui su xda che funziona su ARM9, non credo che ti possa essere utile.
[Android Software Development] smoker46:
ha ok! so i have to wait for new seto of istruction for this cpu?

there's a way to try it? an emulator or something?

thank ;)
[Android Software Development] smoker46:
ha ok! so i have to wait for new seto of istruction for this cpu?

there's a way to try it? an emulator or something?

thank ;)

grazie per la risposta! quindi devo aspettare che venga rilasciata magari una versione per il mio arm9 oppure non la faranno proprio?

c'è qualche emulatore da poter installare?
[HD2 General] syahmanowar:
Hail everybody!

Just wanna share with you guys an info from HTC that they will bring out an awsome HD3 this Nov. All this article taken from HTCPEDIA.

The HTC HD3 might break the line between smartphones and portable computers. The HD3 is expected to arrive in November this year and will run the “soon” to be released Windows Mobile 7.

The specs of the HD3 showed up in the wild and there just might be all truth. Along with the Windows Mobile 7 is the 1GB of RAM and ROM and to add to that arsenal it is to said to come with 16GB of additional onboard storage. Then you can get the super speed of a 1.5GHz Qualcomm Snapdragon, which might not be true since it is supposed to only come out in 2011. Then is the huge screen of 4.5 inch dimension compared to the 4.3 inch of the HTC HD2. It should come with Bluetooth 2.1 and A2DP along with WiMAX and Wi-Fi. Then there is the 1280 x 800 pixel resolution and should support 16 million colors and multi-touch capabilities. Then an 8.0 megapixel camera with Xenon flash. To power all of this one would of course need something strong so a 1800mAh battery will be inside. For ports it should also have HDMI, USB 2.0, and 3.5mm and microSD. Then there is also 32GB of additional storage space.

With all this sweet specs it certainly seems too good to be true, but one never knows. If it is true then the HTC HD3 is something to wait for.
[HD2 General] Ruudfood:
No wayzz!!!! LOL!!!!!111!!

(Is is last week again?):rolleyes:
[HD2 General] GeorgeTF:
i want to buy it NOWWWWWWWWWW

AMAZING
[HD2 General] stemoneymonkey:
I only got my hd2 yestrday and already its old hat

bugger!
[HD2 General] GeorgeTF:
hey stem dont worry my friend!hd2 is amazing too!we have to wate only 1 year for ne new hd so relax and enjoy your phone my friend
[HD2 General] GeorgeTF:
hey stem dont worry my friend!hd2 is amazing too!we have to wait only 1 year for ne new hd so relax and enjoy your phone my friend