Question Continuous monitoring - Samsung Galaxy Watch 4

I like a lot the monitorings so I activated the continuous monitoring. I can not complain about the battery because after 1 day I think it's fine. But what about the sensor lifetime? Do you think that it will reduce a lot the sensor lifetime? Are the sensors already prepared for that?
Thanks for all your answers!

The most susceptible part would be the LEDs generating the light that reads your hemoglobin every few seconds. Have you seen many LEDs die before the device they are built in did?

Siebrand said:
The most susceptible part would be the LEDs generating the light that reads your hemoglobin every few seconds. Have you seen many LEDs die before the device they are built in did?
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Except the high-power ones on your light bulbs that is...

Siebrand said:
The most susceptible part would be the LEDs generating the light that reads your hemoglobin every few seconds. Have you seen many LEDs die before the device they are built in did?
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Yeah that's true, leds have a long life but who knows, I was a bit scared Thanks for the response!

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[Sug] Future Rom Development

I'm sorry to post here but I think it's the best way to catch the proper eyes, and xda tends to be so messy can you really blame me?
To be blunt and not waste time.
When developing your next ROM could you please disable the LED flash for a battery under 15% or whatever amount it is.
I think it cuts the battery life in half when flashing every second.
It's unnecessary and annoying.
Please and thank you.
does that tiny led pull that much power?
LEDs are very efficient, no need do switch it off.
You thinking it is annoying is reason enough for devs to cut it out of their rom?
thank you very
let me use this post to propose an usability enhancement (under my point of view):
I am not questioning the battery expenditure of the led, far from it, but the frenetic red blinking does get on the way of my other notifications.
Example:
- receive a SMS on <15% battery -> the custom _yourcolor_ led does not flash, getting replaced by the low battery one.
If one could, for instance, display both, it would be perfect!
Just trying to make this thread productive, cheers!
have you tried buying always flash from the market. it allows your custom led to flash whenever you get a notification, even if its on charge.
have you tried buying always flash from the market. it allows your custom led to flash whenever you get a notification, even if its on charge.
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It works fantastically when on charge, however does not override the 'low battery' flash when not on charge
"Typical LEDs are designed to operate with no more than 30–60 milliwatts [mW] of electrical power."
it would take about 10-17 hours of the LED on constantly (just the LED) to drain the battery...
it isnt even a constant ON for each second - it uses PWM to minimize the power it consumes (thus the reason it isnt very bright)
so in real terms....that little light flashing is as detrimental to your battery life as a fly hitting a 747s window when its going full pelt (ie. not)
EDIT: miscalculation - looks more like 40-52 hours
I think it cuts the battery life in half when flashing every second.
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its an LED, not a xenon camera flash

[Suggestion] Screen Hack, Video Driver

could we mod our phones like this?
i know we dont have OLED screens, but i like the whole dim to red thing when the battery is low.
or even maybe a red faded border or something.
i'm sure most of us read hack-a-day... maybe.
http://hackaday.com/2010/07/02/oled-hack-saves-juice-on-nexus-one/
Want to really stretch the battery life on your phone? If you have an OLED display [Jeff Sharkey] may have the answer. He did some testing with his Nexus One to see if color alterations can save on current. Darker colors draw less amperage and he found that the red pixels are the most efficient. He did a little work with SurfaceFlinger, which handles the display on Android devices to make this easy, but what will you get by going red? He measured that using only the red pixels dropped the current use down to 35% of what the full color display was pulling. This reminds us of those efforts to save energy by running a black background with Google. Whether you use it or not his post is an interesting read.
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and a comment:
I’d like to see a modified driver that will slowly get more and more “red” (lowering the power on each other color proportionally) as the battery drops.
If you started at 20% and went full red at 10%, then it would act as a cool way of warning you your battery is low while saving power at the same time.
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wyefye said:
could we mod our phones like this?
i know we dont have OLED screens, but i like the whole dim to red thing when the battery is low.
or even maybe a red faded border or something.
i'm sure most of us read hack-a-day... maybe.
http://hackaday.com/2010/07/02/oled-hack-saves-juice-on-nexus-one/
and a comment:
Click to expand...
Click to collapse
Huh. Pretty interesting. Cyanogen has a Nexus One and since he is the most popular developer I would imagine he knows something about it. It wouldn't surprise me if it has crossed his mind already. I guess we'll have to wait and see.

[Q] Using flash as a light source and damage?

A simple question. Does using the flash on my nexus phone as a flashlight damage the led? I read on some forum that one should not keep the light on for more than 15 minutes as this might damage it. Is this true?
Thank you.
Sent by Solid Snake using Tapatalk
No. Its just a bright led just like any flash light. It probably uses a lot less battery than the screen and will not be damaged when on for long.
Sent from my Nexus S 4G using XDA App
Used LED as stroboscope (think 100ish bpm) for 2h after a car accident. It is still functioning today. However I do know of ppl who killed their LED within 30mins of using faster blinking flashlight.
My first Post, new sns owner since 3 days ago!
HiPower led's like those used in flash tend to get very hot if used continusly.
And since i dont imagine it having some sort of cooling, the led's itself can get damaged, or even the solder will melt and flow out of the connections.
I think the flash led system was only designed for some hundred miliseconds use.
Like overclocking you can only push it so far before damage, and it tolerances vary from unit to unit.
btw, what flashlite app do you recommend?
rentaric said:
Used LED as stroboscope (think 100ish bpm) for 2h after a car accident. It is still functioning today. However I do know of ppl who killed their LED within 30mins of using faster blinking flashlight.
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Turning it on and off constantly could simply reduce the life of the led light so that makes sense. But as far as having it on for long periods of time I think would just drain battery.
Sent from my Nexus S 4G using XDA App
obsanity said:
Turning it on and off constantly could simply reduce the life of the led light so that makes sense. But as far as having it on for long periods of time I think would just drain battery.
Sent from my Nexus S 4G using XDA App
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The Led itself actually no. But you may damage the drive circuit if is not designed to work at that frequency.
I have designed systems that work 24/7 at about 100hz and they've been working for years!
wolftec said:
My first Post, new sns owner since 3 days ago!
HiPower led's like those used in flash tend to get very hot if used continusly.
And since i dont imagine it having some sort of cooling, the led's itself can get damaged, or even the solder will melt and flow out of the connections.
I think the flash led system was only designed for some hundred miliseconds use.
Like overclocking you can only push it so far before damage, and it tolerances vary from unit to unit.
btw, what flashlite app do you recommend?
Click to expand...
Click to collapse
Just type flash light in the market and the one with the blue background has some nice features that I like.
Sent from my Nexus S using XDA App
Tiny Flashlight + LED.... been using it for over 2 years now

Alternative for bLED: NoLED

First thing I want to say is that I didn't create this app.
But for everyone who finds the bLED idea kind of handy: NoLED does it too, but in another way.
Here the link to the thread:
http://forum.xda-developers.com/showthread.php?t=730692
I confirm that this application works very well on the GALAXY NOTE.
Thank you to the developer.
BubbleBuzz is better
Thanks. NoLed is an amazing app
Sent from my GT-I9100 using xda premium
Screen based "LED notification" are not that healthy even with the SAMOLED, the screen is still lit and voltage is going through the screen and not only that but you also degrade both green and red OLEDs as they stay on even when a black picture is displayed as backed up by this post:
http://forum.xda-developers.com/showpost.php?p=21560940&postcount=103
But if you dont care of any of those then its pretty ok to use at the expense of battery life.
An amazing app indeed. If only it didnt eat my battery. Since removing it I went from 1 day to 2 days on a batterycharge.
Not giving noled all the credit tho, also switched to LA4 a few days ago.
Nice application works very well on the NOTE.
I am a Noled user for 2 Years now, Its the best! ű
I tried iLED and it munched the battery in hours.
After installing Better Battery Stats and researching wakelocks, I understood that screen based LED notification apps will cause the phone to constantly remain in a state that drains the battery, not just the LED draining it.
I believe bLED operates differently and so doesn't drain the battery as much.
madmack said:
You see the major problem with NoLED is in the Android framework. a) Android doesn't allow the CPU to deep-sleep if the screen is on regardless of its content. b) The black pixels are actually switched on. Even though I believe that our screen is capable of switching partial pixels on, the Android API simply doesn't give access to this feature.
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Xaddict said:
I tried iLED and it munched the battery in hours.
After installing Better Battery Stats and researching wakelocks, I understood that screen based LED notification apps will cause the phone to constantly remain in a state that drains the battery, not just the LED draining it.
I believe bLED operates differently and so doesn't drain the battery as much.
Click to expand...
Click to collapse
Yeah, not only that, but NoLED wasn't working very well for me anyway. It kept coming on even when the screen wasn't sleeping (e.g. over running satnav...).
I am hoping that somebody will eventually add support for BLN to the kernel! I've seen BLN on Nexus S and it looks ideal.

Full charge at 96 percent?

Hello community,
So, I've got myself a Nexus 5.
Problem (?):
When I'm charging my N5 and the battery indicator reaches 96%, the charging led goes green, indicating that it's fully charged. It doesn't STOP to charge at 96% like to prevent overcharging, it just shows green led at 96% and continues to charge to 100%. It thought the problem may be the stock kernel that comes with Cataclysm ROM, so I've flashed ElementalX kernel (Without wiping anything, do I have to wipe?) and the problem's still there.
Is that behavior normal?
Here are details about my phone:
Cataclysm ROM, 5.1.1 (Jun 20, 2015, stable build)
ElementalX Kernel, latest version for 5.1.1 (4.04)
I got my N5 one or two months ago, I rooted immediately but I believe it had this issue right out of the box. And I'm using the stock wall charger & usb cable which I received with my N5.
Thanks to anyone trying to help me.
Regards
I remember a Marques Brownlee Youtube video where he was talking about Li-On battery overcharging - they don't apparently, since there is circuitry in the battery to regulate the charging. From memory, he described it as a sort of "bounce" effect, where the charging gets close to 100%, cuts out, then says "Maybe a bit more" and starts again - and it may do that a number of times. So I reckon that this behaviour is what you're seeing, and you don't have any problem.
dahawthorne said:
I remember a Marques Brownlee Youtube video where he was talking about Li-On battery overcharging - they don't apparently, since there is circuitry in the battery to regulate the charging. From memory, he described it as a sort of "bounce" effect, where the charging gets close to 100%, cuts out, then says "Maybe a bit more" and starts again - and it may do that a number of times. So I reckon that this behaviour is what you're seeing, and you don't have any problem.
Click to expand...
Click to collapse
Thank your for your reply
Now I know that everything's behaving normal. I almost thought that I have to replace the battery - and it's non removeable, so that would be a hard nut for me to crack, even with the right tools.
Last question, if I would replace my current N5 battery with another (original) battery, would the 'problem' vanish? Now I know, everything's OK.. but I'm a sorta perfectionist when it comes to devices. In other words, is that behavior related to the battery?
Here's the Marques Brownlee video I mentioned: https://www.youtube.com/watch?v=hrcbcm11830
So the answer to your question is: no, a new battery will (most likely) make no difference at all - a lot of trouble, risk and expense for nothing. I leave my phone on a charging pad every night, on a timer switching off around 03:00, and it's usually around 95-97% in the morning. Like you, I'd much prefer 100%, but I've learned to live with it, especially as my Nexus 6 very rarely drops below 50% during the day - I'm a light user.
And a word of warning to anyone reading this. We tend to go looking for solutions to problems we've already suffered, when it can be too late. I managed a few months ago to drain my Nexus 5 battery down to zero, and when I recharged it the radio was stone dead - no SIM recognised, no data service (but wifi ok), no phone calls, no texts. There are many people reporting the same thing, so beware:
DON'T LET YOUR NEXUS 5 BATTERY DRAIN TO ZERO!!!
Unbenannt0412 said:
Now I know that everything's behaving normal. I almost thought that I have to replace the battery - and it's non removeable, so that would be a hard nut for me to crack, even with the right tools.
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Click to collapse
There is no need for you to replace your battery - the percentage issue might be solved with a simple battery calibration.
But just to answer your question, the hardest part when replacing the battery is getting the old one out since it's glued in pretty hard.
-SmOgER said:
There is no need for you to replace your battery - the percentage issue might be solved with a simple battery calibration.
But just to answer your question, the hardest part when replacing the battery is getting the old one out since it's glued in pretty hard.
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Click to collapse
Can you please forward me to some sort of instructions of how to calibrate properly? Can't find anything but the batterystats.bin hoax.
Anyone?
Unbenannt0412 said:
Anyone?
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disccharge from 100% until your phone shuts down, then charge it to 100% while it is off
As far as I know, this issue is software side, not hardware. Have you ever encountered this problem before ? On my ROM (which is SAOSP), the LED started turning green at 95%. This could also mean that the green LED is set to appear at 95% - 96% charge.
F4uzan said:
As far as I know, this issue is software side, not hardware. Have you ever encountered this problem before ? On my ROM (which is SAOSP), the LED started turning green at 95%. This could also mean that the green LED is set to appear at 95% - 96% charge.
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Click to collapse
Yes, I've thought about that too. The LED could be the problem. Is there some sort of workaround for this?
And no, I'm encountering this for the first time. I've rooted and flashed Cataclysm ROM right after I unpacked my N5, so I don't know if the problem was on stock too.
Unbenannt, I would say that you need to stop looking at this as a problem - it doesn't seem to be one. You'll spend a lot of time and energy on this (you already have...) and the concensus seems to be that it's not worth the trouble. If you run down your battery you risk bricking the radio (and I know that GtrCraft is saying only until the phone shuts down, not drained to zero) but really, why take the risk of damaging a beautiful device for such a minor reason?
Unbenannt0412 said:
When I'm charging my N5 and the battery indicator reaches 96%, the charging led goes green, indicating that it's fully charged.
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Click to collapse
did you said charging LED ? wooh I've been using this device for 2-3 months and never seen LED blink when full charged !!
you are using any app or something for that ? bcz i'm on stock and i can't see any option to turn it on and No charging light for me at all !
does all people see it on stock ?!
jineshpatel30 said:
did you said charging LED ? wooh I've been using this device for 2-3 months and never seen LED blink when full charged !!
you are using any app or something for that ? bcz i'm on stock and i can't see any option to turn it on and No charging light for me at all !
does all people see it on stock ?!
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Click to collapse
I'm running a custom ROM (Cataclysm), so that's probably why.
dahawthorne said:
Unbenannt, I would say that you need to stop looking at this as a problem - it doesn't seem to be one. You'll spend a lot of time and energy on this (you already have...) and the concensus seems to be that it's not worth the trouble. If you run down your battery you risk bricking the radio (and I know that GtrCraft is saying only until the phone shuts down, not drained to zero) but really, why take the risk of damaging a beautiful device for such a minor reason?
Click to expand...
Click to collapse
Yeah, maybe you are right.
Unbenannt0412 said:
I'm running a custom ROM (Cataclysm), so that's probably why.
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Oh..i thought you were fully stock before flashing custom kernel.

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