Database Users

Three-axis gyroscope on the nexus....

is the Three-axis gyroscope on ur device accurate?
mine for like 1 minute shakes alot then after it stil shows a wrong direction and if i move it a bit shows a diferent but stilll eronated direction
is there any way to recalibrate it?
i played a bit on a iphone 4 and was very very accurate.....

funstuffalex said:
is the Three-axis gyroscope on ur device accurate?
mine for like 1 minute shakes alot then after it stil shows a wrong direction and if i move it a bit shows a diferent but stilll eronated direction
is there any way to recalibrate it?
i played a bit on a iphone 4 and was very very accurate.....
Click to expand...
Click to collapse
what are you using to view the orientation and information from the gyro

firstly i tried google maps navgation then i downloaded anoter 2 free aps gps test and gps status...if i hold the phone in one position it shows me one point as beeing the north...if i do a 180 degrees spin it shows me another point as beeing the north
ps i think its the digital compas thats foulty not the gyro right?

slowz3r said:
what are you using to view the orientation and information from the gyro
Click to expand...
Click to collapse
You could use the app Phone Tester it gives you a reading of all the sensors, but that's it.

funstuffalex said:
is the Three-axis gyroscope on ur device accurate?
mine for like 1 minute shakes alot then after it stil shows a wrong direction and if i move it a bit shows a diferent but stilll eronated direction
is there any way to recalibrate it?
Click to expand...
Click to collapse
This thread warrants an explanation of the differences between GPS, compass, and gyroscope.
GPS: Tells you where you are. It can be used to infer the direction in which you are moving. It can NOT tell you which way you are facing.
Compass: Tells you which way you are facing with respect to the Earth's north/south poles.
Gyroscope: Tells you how fast you are spinning about each of 3 axes (hence why it's called a "3-axis gyroscope"). It can be used to infer the direction in which you are facing (albeit not easily).
Neither the compass nor the gyroscope can tell you where you are, or the direction in which you are moving.
The problem you are seeing is with the compass, NOT with the gyroscope. Google maps does not currently do anything with the gyroscope. The digital compass can be calibrated. I use the "Compass" app, which has a calibrate function.

It's a 6-axis gyroscope, not 3.

ryude said:
It's a 6-axis gyroscope, not 3.
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Click to collapse
No it's not a 6 axis. It's a 3 axis. It's listed here: http://www.google.com/nexus/#/tech-specs.
-----------------
Also general question/comment. Doesn't a gyroscope help the phone know which way is down? So technically you can have an object shown on the screen, then you can walk around that object with your phone and see all sides of the object. (Like the iPhone 4 demo Steve Jobs did with the game Jenga, he walked around the tower to see all sides)

@ ravidavi
Thanks mate yea thats it....the compas is all messed up...
On ur phones dose the north apear to be in same direction no matter witch way u turn or is this a wide spread flaw

nxt said:
Doesn't a gyroscope help the phone know which way is down?
Click to expand...
Click to collapse
No.
funstuffalex said:
@ ravidavi
Thanks mate yea thats it....the compas is all messed up...
On ur phones dose the north apear to be in same direction no matter witch way u turn or is this a wide spread flaw
Click to expand...
Click to collapse
The compass needs to be calibrated.

ryude said:
It's a 6-axis gyroscope, not 3.
Click to expand...
Click to collapse
There's no such thing (in this world) as a 6-axis gyroscope. What you are thinking is the oft-quoted phrase "6-axis gaming sensor" (or 6-axis motion sensor). A 6-axis motion sensor is actually a chip that combines a 3-axis accelerometer and a 3-axis gyroscope into one package.

nxt said:
Doesn't a gyroscope help the phone know which way is down?
Click to expand...
Click to collapse
A gyroscope only tells you how fast you are spinning about an axis. An accelerometer can (for the most part) tell you which way is down.

I found this video today
http://www.youtube.com/watch?v=5JQz7EOHAwE
I would like to know what these guys are using to test the gyro on the NS.. Actually I am not sure this app is actually testing the app or the compass / accelorometer.
any ideas?

Did that woman say the phone had a barometer...?
alitech said:
I found this video today
http://www.youtube.com/watch?v=5JQz7EOHAwE
I would like to know what these guys are using to test the gyro on the NS.. Actually I am not sure this app is actually testing the app or the compass / accelorometer.
any ideas?
Click to expand...
Click to collapse

Take pictures with Sensor Proximity...

Hi friend, we all know that our Z haven't camera key...
So I thinking to use sensor Proximity to take pictures and that's help's to take underwater picture.
This is theory and I don't know how much real it is... Because. I'm not developer and it's just idea
Waiting to see your opinions and how much realistic.
Sorry for my English.
Sent from my C6603 using xda app-developers app

There are ways to map the camera shutter to the hardware buttons of the phone.

DrKrFfXx said:
There are ways to map the camera shutter to the hardware buttons of the phone.
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Click to collapse
yes i know this ways i just share my idea..

I don't know if proximity sensor is immune to water, though.

I like the idea, is the only thing I miss from my last phone.
'Wave to snap' sounds good, you'd have to get the sensitivity just right though.
Perhaps ask the creator of cybershot mod. He'd be the best person, who might know what to do.
Sent from Z Beast

created, tested
It is good idea. And I have read this thread and decided to try it out. So I just created simple test app with that function, tried it in water and it works. So app now is very unstable, laggy, because I just spent 30 mins on creating it. If anyone want to try, here is the .apk file. If you are interested in this app, you can suggest functions, design and I'll work on it.
UPDATE: Little bugfix + signed

cant install
AGGevorgyan said:
It is good idea. And I have read this thread and decided to try it out. So I just created simple test app with that function, tried it in water and it works. So app now is very unstable, laggy, because I just spent 30 mins on creating it. If anyone want to try, here is the .apk file. If you are interested in this app, you can suggest functions, design and I'll work on it.
Click to expand...
Click to collapse
i cain't install in my z. error app not installed

karrouma said:
i cain't install in my z. error app not installed
Click to expand...
Click to collapse
Try again. I uploaded new signed apk file. Make sure that you have enabled "Unknown sources" in Settings > Security
Update: v. 0.0.2 attached

AGGevorgyan said:
Try again. I uploaded new signed apk file. Make sure that you have enabled "Unknown sources" in Settings > Security
Update: v. 0.0.2 attached
Click to expand...
Click to collapse
Good work. Now it saves pictures in Album. That's what we neded. I'll test it later in the sea.

tomo100brt said:
Good work. Now it saves pictures in Album. That's what we neded. I'll test it later in the sea.
Click to expand...
Click to collapse
Thanks. I think that we also need zoom function and toggles for flash/focus/white balance and resolution selection. But it will be added in future, if app will be popular. Also may be front camera function.
PS. Here is the same 0.0.2 version in google play: https://play.google.com/store/apps/details?id=am.tir.z.proximitycamera

AGGevorgyan said:
Thanks. I think that we also need zoom function and toggles for flash/focus/white balance and resolution selection. But it will be added in future, if app will be popular. Also may be front camera function.
PS. Here is the same 0.0.2 version in google play: https://play.google.com/store/apps/details?id=am.tir.z.proximitycamera
Click to expand...
Click to collapse
Keeping my eye on this. Might be portal worthy
Sent from my LT29i using xda premium

It works under sea perfectly. We can take pictures under water without touching and moding keys! Now we need some settings.

I have the current version from the play store and can't even start the app. It immediately force closes.
Is there anything I can do about this other than wait for a newer version?
I'm on 4.2.2 latest firmware with root and locked bootloader.

jakobdz said:
Hi friend, we all know that our Z haven't camera key...
So I thinking to use sensor Proximity to take pictures and that's help's to take underwater picture.
This is theory and I don't know how much real it is... Because. I'm not developer and it's just idea
Waiting to see your opinions and how much realistic.
Sorry for my English.
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
Glad someone else thought of this, I had been thinking about this for a long time, and previous phones I had used utilised the proximity sensor to control the music, e.g skip forward and back and pause your music, and various other things

AGGevorgyan said:
It is good idea. And I have read this thread and decided to try it out. So I just created simple test app with that function, tried it in water and it works. So app now is very unstable, laggy, because I just spent 30 mins on creating it. If anyone want to try, here is the .apk file. If you are interested in this app, you can suggest functions, design and I'll work on it.
UPDATE: Little bugfix + signed
Click to expand...
Click to collapse
Thank you @AGGevorgyan to give this idea the way to coming up
i confirm that working like magic And certainly under water !!
so if you can add some functions on it to work like real hardware camera key !!!
Hold = focus
Hold then raise = take picture
Hold in Album = return to camera not useful because when you take picture you need to satay in camera
If you like this name to app :Aqua Z just inspiration
you can make thread in Xperia Z Themes and Apps

That's why I love XDA!!! You guys kick ass! For those who still worries about official rom, why worry??? You got XDA!

drsoran2 said:
I have the current version from the play store and can't even start the app. It immediately force closes.
Is there anything I can do about this other than wait for a newer version?
I'm on 4.2.2 latest firmware with root and locked bootloader.
Click to expand...
Click to collapse
It does not work on my either same firmware 4.2.2 locked downloader with root and dual recovery..

Thanks for feedback guys
I have the current version from the play store and can't even start the app. It immediately force closes.
Click to expand...
Click to collapse
There is some floating bugs causing force close. One of them is related to waking up after sleep when app is running but I don't think, that you talking about that one. So i fixed one bug and hope, that it fixes your case, when you can not start app at all. Please try version 0.0.3 and tell me how it works.
so if you can add some functions on it to work like real hardware camera key !!!
Hold = focus
Hold then raise = take picture
Click to expand...
Click to collapse
I don't think that we need this, because I using "CONTINUOUS auto focus" mode during preview, so it focusing every moment until you tap to proximity sensor, after tapping IF it is not focused yet, it focusing and taking picture and IF already focused, then taking picture immediately. So focus on hold will not have effect, because it already tries to focus.
If you like this name to app :Aqua Z just inspiration
Click to expand...
Click to collapse
Good suggestion. But I think, that name must be self-descriptive, I mean user must understand what about is this app. But Aqua Z is also not bad. I have few ideas about name, so we can create poll
Aqua Z, Z Proximity Sensor, Z Underwater Camera, Xperia Z Water Photo Camera... You can add more variants.
you can make thread in Xperia Z Themes and Apps
Click to expand...
Click to collapse
I'll do it right now
Update: done http://forum.xda-developers.com/showthread.php?t=2373505
I have uploaded 0.0.3 bugfixed version to google play, it will be available in ~30 mins. You can wait or download attached .apk

Can you defeat the face-recognition with a photo ?

Has anyone managed to defeat the S4s face recognition with a photo ?
I tried and it wouldn't work.

ImNotTheDroidUrLooking4 said:
Has anyone managed to defeat the S4s face recognition with a photo ?
I tried and it wouldn't work.
Click to expand...
Click to collapse
What about warping a photo around a mannequin and see if that works? :laugh:

Ugly-051 said:
What about warping a photo around a mannequin and see if that works? :laugh:
Click to expand...
Click to collapse
What are you doing with mannequins in your house ? I wont tell. :angel:

ImNotTheDroidUrLooking4 said:
What are you doing with mannequins in your house ? I wont tell. :angel:
Click to expand...
Click to collapse
Can't say exactly

ImNotTheDroidUrLooking4 said:
Has anyone managed to defeat the S4s face recognition with a photo ?
I tried and it wouldn't work.
Click to expand...
Click to collapse
The photo needs a very high quality. But yeah, theres a good chance of suceeding to trick the system with a picture.

Yes it absolutely can be fooled by a picture, you don't even have to go through a lot of trouble a pic from another phone or device will do, however 'defeating' the face-rec with the liveliness feature enabled is a bit trickier.
Sent from my GT-I9505G using xda app-developers app

face recognization
I donot fully agree because if blinking eye detection is enabled it is not possible to bypass it.I wonder if someone uses a high quality gif of person's face and play on tab while facing device not sure if it will work.My friend says it works but I doubt

Tried it with a photo but no luck yet
Sent from my GT-I9505 using XDA Premium 4 mobile app

I haven't had much luck with a photo in general. But, what if you were to try with a video of the face, maybe a moving video of facial movements would trigger it! Try em out and let us know.

No success so far wonder if its using the front infrared sensor as well.

Unlocked with student card
I unlocked my Nexus with my student card when I first got it.

[Q] App that can use the heart rate sensor - but not S Health ?

I want to remove the S Health app, but still to be able to monitor the heart rate.
Is there any third party app that can use the S5 sensor?

Plenty of apps that use the camera lens if you don't mind finger prints on lens. Why do you want to remove S health?
Sent from my SM-G900F using XDA Free mobile app

hetalmp said:
Plenty of apps that use the camera lens if you don't mind finger prints on lens. Why do you want to remove S health?
Sent from my SM-G900F using XDA Free mobile app
Click to expand...
Click to collapse
i wonder if the apps that use the camera flash are as accurate?

I would like to know this also. I looked at s-health. I don't want to monitor my activity, but I would like to have an app that just reads heart rate.

bimmerdriver said:
I would like to know this also. I looked at s-health. I don't want to monitor my activity, but I would like to have an app that just reads heart rate.
Click to expand...
Click to collapse
You can use the hardware module test. Access it by dialing *#0*#. Then go to sensors, then start under HRM sensor. It's not pretty but it works.

b631nz said:
You can use the hardware module test. Access it by dialing *#0*#. Then go to sensors, then start under HRM sensor. It's not pretty but it works.
Click to expand...
Click to collapse
Thanks for the reply. Definitely not elegant. I hope someone comes out with a simple heart rate monitor app so we don't have to choose between the hardware module test and s health. Samsung is like a junkie except they are addicted to bloat not smack.

HRM selftest fails - check yours!!

I did some selftests with *#0*# yesterday, and i did get a few errors in the HRM test inside the "sensor" test page. Look at the screenshot attached!
I would suggest that you test your HRM sensor as well, for that go into the dialer, enter *#0*#, click on "sensor", scroll down and do the HRM sensor EOL test. On 2 other devices I tested one has equal flaws as mine, the 3rd phone has all lines "pass".
Please post your results!
ps.: HRM = heart rate monitor

Mine fail also.
Sent from my SM-G935F using Tapatalk

TML1504 said:
I did some selftests with *#0*# yesterday, and i did get a few errors in the HRM test inside the "sensor" test page. Look at the screenshot attached!
I would suggest that you test your HRM sensor as well, for that go into the dialer, enter *#0*#, click on "sensor", scroll down and do the HRM sensor EOL test. On 2 other devices I tested one has equal flaws as mine, the 3rd phone has all lines "pass".
Please post your results!
ps.: HRM = heart rate monitor
Click to expand...
Click to collapse
Are you sure the test isn't just not properly implemented for the given sensor?
I also get the fails, but it's working without issues at s health and it anyways isn't accessible from third party apps except through s health.

Tectas said:
Are you sure the test isn't just not properly implemented for the given sensor?
I also get the fails, but it's working without issues at s health and it anyways isn't accessible from third party apps except through s health.
Click to expand...
Click to collapse
Good question, the fact is that I've seen one device from a friend which was ok, all lines were a "pass"! If the test itself is the problem, then perhaps all devices should fail...

TML1504 said:
Good question, the fact is that I've seen one device from a friend which was ok, all lines were a "pass"! If the test itself is the problem, then perhaps all devices should fail...
Click to expand...
Click to collapse
Not if there are different sensor build in as with the camera.

Tectas said:
Not if there are different sensor build in as with the camera.
Click to expand...
Click to collapse
Good point! This could be the reason!
Also, I wont use this sensor much, it bothers me more on a theoretical level...

TML1504 said:
Good point! This could be the reason!
Also, I wont use this sensor much, it bothers me more on a theoretical level...
Click to expand...
Click to collapse
Wow!
Sent from my SM-G935F using Tapatalk

Failed as well
---------- Post added at 09:43 AM ---------- Previous post was at 09:43 AM ----------
Will check my wife's s7 edge tonight

I get failed also.

Fail.
In actual use with S Health a good half of the attempts at reading heart rate are unsuccessful, does this happen with your handset too?

All pass, AT&T S7E
I've never had a problem with S Health reading my heart rate. It works every time.

Mine says place finger on sensor correctly all the time even though I am.

If I lay my phone flat on my desk it works. Actually i lay it on a notepad and make sure that the camera and HRM are not touching the desk. It will pass the test this way but fail if I do not sit it on the notepad.

yes, mine fail if put on desk but put on a piece of paper (1-2mm thick) is saying pass. Camera and HRM sensor should not contact anything.

tyma1026 said:
If I lay my phone flat on my desk . . . [ ⁠or ⁠] . . . on a notepad it works. . . . It will pass the test this way but fail if I do not sit it on the notepad.
Click to expand...
Click to collapse
^^ This.
For the sake of completion, the HRM EOL test is supposed to be done with the phone completely still, which is why those that put their devices on a vibration dampening surface got the test to pass.