Barometer - Nexus 4 Q&A, Help & Troubleshooting

I noticed the Nexus 4 will have a barometer. Do other phones have a barometer and I've just missed this? What can this be used for?
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marty331 said:
I noticed the Nexus 4 will have a barometer. Do other phones have a barometer and I've just missed this? What can this be used for?
Sent from my Nexus 7 using xda premium
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Galaxy Nexus did......but the built-in barometer that's got so many of us scratching our heads has a much different purpose. Android engineer Dan Morrill took to the social pages of Google+ to clarify the confusion. Turns out, Sammy added the barometer to help the device more rapidly acquire a GPS lock by delivering altitude coordinates to the required latitude and longitude GPS equation. From Engadget article.

The Galaxy Nexus has a barometer. It is used for things like getting your altitude to improve GPS location determination.

That's nifty. It will also help me track my altitude during my next 30km+ jump.

Very good to know guys. Hmm i wonder what app opportunities there are here...
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marty331 said:
Very good to know guys. Hmm i wonder what app opportunities there are here...
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It would be nice if GPS test supported it. I can also image a humorous "Highest Altitude" badge in Foursquare (but who uses Foursquare anymore?).

Wasnt the Xoom the first device with a barometer?
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Lothaen said:
Wasnt the Xoom the first device with a barometer?
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Indeed....same article stated as much.

Is anything known about the quality of the barometer readings? Are they accurate enough for altitude?

You can use your barometer to contribute to pressureNET! It's a free, open source barometer network for Android. I'm building it in hopes to create a weather network of unprecedented size and resolution in order to improve short-term, local weather prediction.
https://play.google.com/store/apps/details?id=ca.cumulonimbus.barometernetwork

cumulonimbus_ca said:
You can use your barometer to contribute to pressureNET! It's a free, open source barometer network for Android. I'm building it in hopes to create a weather network of unprecedented size and resolution in order to improve short-term, local weather prediction.
https://play.google.com/store/apps/details?id=ca.cumulonimbus.barometernetwork
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Great idea, cumulonimbus_ca. I will get it the day my nexus is delivered! Keep up the great work. I'll do some reading up about it in the mean time, i.e. Privacy policy.

121C4 said:
Great idea, cumulonimbus_ca. I will get it the day my nexus is delivered! Keep up the great work. I'll do some reading up about it in the mean time, i.e. Privacy policy.
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Agreed, I'll load it the day my Nexus is delivered also.
Sent from my Galaxy Nexus using xda premium

Does anyone know its resolution ? The Barometer on my Galaxy S3 is pretty good, I'm a paraglider pilot and i use it as a Variometer, it works pretty well.
Since i'll get a Nexus 4, its time to get more info on that barometer.

How dare anyone collate the atmospheric pressure imposed on thee.......... How dare they?
Flouride in the water supply is bad enough!

barometer for calls/ mic
Actually the barometer is used for mic noise cancellation, it is used to calibrate the pressure on the mic to be nicelly centered for calls. :cyclops:

I thought the barometer was used with the Garmin car app, which plugs into my OBD II sensor in my car, in order to measure how much psi of boost is coming from my turbocharger.......
-.-"

I noticed a few days ago that the Nexus 4 came with a barometer sensor that is used to help the GPS accuracy. I decided to test this out using Barometer HD. It worked great and allowed me to save my pressure data.
However, the past two days it's been saying "No barometer sensor detected". Thinking this was GPS related I tried turning it on, but no luck. I ran Z - Device Test and it says I do not have the sensor either.
Anyone know what's going on?

Related

Wow, they STILL couldn't fix the compass in EI22

Go ahead, check your compass apps. They STILL didn't fix the compass inversion problem with EI22. That's hilarious. And also why GPS is still shoddy.
just having the official GB is good enough for me
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Still have gps lock ups just like past leaks :-(
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This is why I'm still convinced that there was a flub on the production line that resulted in many of our phones having the compass installed upside-down - the software assumes a certain value is north/east/etc. instead of using calibration (or gravity) to determine the correct layout
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All you'd need to do is reverse it in the code, right?
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Blankrubber said:
All you'd need to do is reverse it in the code, right?
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This would either require two versions (or more, depending on how many different orientations exist), or additional code to calibrate appropriately. I would vote for the second method...
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My compass works. I'm still on EC05, however.
Really the compass who gives a flying f**k
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jbadboy2007 said:
Really the compass who gives a flying f**k
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Kinda need if you use something like Dishpointer Pro. But anyways, I just tested the compass and Dishpointer Pro is spot on with EI22.
There is a GPS program that will calibrate the compass. This fixed the issue for me.
I don't typically use the compass, but I was trying to get my GPS to work on the ACS ICS rom.
I calibrated the compass using GPS Tools and all is good.
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styles420 said:
This is why I'm still convinced that there was a flub on the production line that resulted in many of our phones having the compass installed upside-down - the software assumes a certain value is north/east/etc. instead of using calibration (or gravity) to determine the correct layout
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My compass is correct on GPS Status app.
Some of you are reporting correct compass readings from stock? Interesting. So if that's true, then it is either a hardware or irreversible firmware issue that Samsung can't fix.
I always hypothesized that since the board on the Epic was a split PCB due to the sliding keyboard and CDMA radio, the magnometer was physically oriented inversely to all other Galaxy S devices thus simply a software issue they wouldn't fix. But if they realized this and made a hardware revision to correct this (as it now seems), then I can see why they refuse to fix it. They would fix the reversed compasses and break those who weren't.
Also, I know you can fix the problem with GPS status and doing horizontal calibration with the phone face-down.
And just a last note, the mgnetomer settings and binary driver in GB have been replaced with an automatically calibrating 'geomagneticd' daemon.
To those who don't understand why I mentioned that this is probably the reason GPS is shoddy; the supplementary data (XTRA) to assist in GPS locks provides the GPS daemon with up-to-date geomagnetic data, atmospheric ephermis data, and accurate positions of NAVSTAR satellites in orbit. Now think about it. If the device thought it were facing up and oriented due-north, but in reality it was face-down and south, it would have a lot more difficulty making an initial lock as well as maintaining one if it were ever moved. Follow?
Feel free to tear my science to pieces if you have a better explanation than I do.
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Sounds good but a gps doesn't need to know which way it is facing. It just picks up a signal no matter which way it is facing.
digiblur said:
Sounds good but a gps doesn't need to know which way it is facing. It just picks up a signal no matter which way it is facing.
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To get a faster fix, it uses XTRA to get precise locations of other satellites.
Mutiny32 said:
But if they realized this and made a hardware revision to correct this (as it now seems), then I can see why they refuse to fix it.
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If so, that's still pretty crummy. Such a hardware revision should've been made identifiable to software so that the appropriate driver can decide which orientation transformation to apply.

[Q] could someone post a pic taken with the camera?

i know a camera app is not natively installed,
but can anyone of you lucky folk to be playing with your nexus take a reasonable light level typical picture so i and others can get an idea of the image quality?
be much appreciated.
cheers.
p.s i'm thinking of bodging up a little mirror attachment to 'convert' the camera to (at least) 'upwards facing' or in other words, if the tab is held flat, forward facing...
i like dodgy things like that...
Arstechnica has some pictures taken during their review. Also they take them from both within Skype, and using a Camera App built for the N7 on the market. Huge difference, but its still a low end camera.
Here's a pic in my house with only the 4 kitchen lights on. http://www.imgur.com/u06De.jpeg
cheers, i guess its 'ok' for its purpose.
I got used to my ipod 4th gen camera for the odd snap when out and about, it seems it should do that job ok, and sure app thats aren't compatible will get an update to optionally use it. kind of kills 'augmented reality' though doesn't it? was the new big thing, and now, uh, nah sorry google says no.
worse cam is about the only loss of selling my 'pod i think, but will probably upgrade my phone package which should have a reasonable cam as they do these days.
cheers.
My normal room light
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dude tidy your room lol
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There you go
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amusing contrast in the two pics there! -
i'm imagining you winning the pink mac girl over with your nice gadgets & N7 in the cafe or wherever then taking her back to... uh flash-beezy's room.
"oh... "
but maybe she'll won't care by then. my room is also a tip but my gf is past noticing, worn down.
anyway with a bit of natural light the pic isn't too bad, indoor is as expected, but for snaps to msg to folk or make note of things, seems ok.
thanks - keep the 'what N7 owners take pictures of' coming...
foxorroxors said:
dude tidy your room lol
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Lol. Haven't been able to put my Nexus down
Plus my Fiancé is suppose to clean her crap from in front of my TV LOL
just to mention, i see that instagram has updated their app to be nexus7 camera compatible, as it wasn't before apparantly.
so you can make those dodgy pics more presentable.
in other news, initial tests of my 'angled mirror attachment' idea seem ok using ipod as a tester. just need a little mirror that is less scratched than the one i've got at the moment.
i think being able to have a 'forward facing' (when tablet held flat) cam meaning you can visually frame things up would be handy for alot of folk.
JackBauer11 said:
There you go
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Bah. should have taken the picture more to the left :angel:

Pinch to zoom quick sand?

Thinking about the N4 as a secondary phone but I played with one in the T-Mobile store and noticed that pinch to zoom seemed to be pretty unresponsive and disappointing and that's putting it lightly. When pinching to zoom it felt as if I was moving my fingers through quick sand. It was as if my fingers had to literally transverse half of the entire screen before the phone started to react. Can anyone else confirm this? Like I said, this will be my secondary phone and my primary will be an iPhone 5 so I will going back and forth between the 2 phones often which will make the poor responsiveness even more noticeable and bloody annoying since the iPhone is very responsive and accurate in this department. So now I'm rethinking my purchase of this phone. Again can anyone confirm this??? Thanks
mine doesn't do this. it is very responsive.. are you talking about having to go out farther when zooming in? i think they designed the zoom in to occur after your fingers have spread over a certain distance so you don't accidentally zoom in when you don't mean to.
Its like people are just finding reason not to buy this phone cause it has real issues or they just like to complain....personal I think your all crazy . My coworker got his nexus 4 last week and its ****ing awesome the camera in HDR mode is amazing the data speeds are top notch and the screen is responsive. I don't know it everyone and there mama was playing with the display phone at T-Mobile ,but here a story I was playing with a Gs3 at T-Mobile and found pictures of a girls ***** on it .
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stormtroopercs said:
mine doesn't do this. it is very responsive.. are you talking about having to go out farther when zooming in? i think they designed the zoom in to occur after your fingers have spread over a certain distance so you don't accidentally zoom in when you don't mean to.
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There was another thread on this yesterday - this is actually Google almost certainly designing around someone else's patent on touchscreen usage. They probably figured that what was going on in older versions was too close to Apple's or someone else's precise method for interpreting multitouch input, so they designed something effective but different enough to avoid litigation. There's a reason why neither Apple nor Microsoft have sued Google directly over Android - Google designs around patents pretty well.
I wrote about this yday... Seriously. . try Firefox
Also , qickpix for gallery doesnt have the issue either
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stormtroopercs said:
mine doesn't do this. it is very responsive.. are you talking about having to go out farther when zooming in? i think they designed the zoom in to occur after your fingers have spread over a certain distance so you don't accidentally zoom in when you don't mean to.
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but why should you zoom in accidentally? you use two fingers to zoom..
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Falzar said:
I was playing with a Gs3 at T-Mobile and found pictures of a girls ***** on it .
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Epic
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italia0101 said:
I wrote about this yday... Seriously. . try Firefox
Also , qickpix for gallery doesnt have the issue either
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I hear ya, but even still it'd pretty annoying and making me think before I buy. Honestly I'm a stock app kinda guy. I like the stock apps, I actually want to use Chrome but I can't, I want to use the stock gallery since it would be more integrated but I can't without this bug/feature this will also make using Google maps bloody annoying more than anything as when using maps there is a lot of zooming in and out. I'm wondering if other ROMs have this issue with the N4 or not.... Hmmm... That would be an indicator if there was more of a real issue/hardware level issue or not. Wondering if Cyanogen, Paranoid, or AOKP would have the same issue...
this is such a moot issue based completely on software filtering/calibration of your touches. Capacitors are hyper sensitive to touches, so much so that you have to tone it down and filter out all the noise... You can easily go into the software and figure out where the pinch-zoom controls are and fix them...
I am running codefireX's build and my pinch to zoom works perfectly in gallery, chrome, maps, camera. Registers my touch input no mater what I try.
If this is a deal breaker for you, I would be more worried about thermal throttling issues tbh... Those are actually hardware related.
elliot.newnham said:
this is such a moot issue based completely on software filtering/calibration of your touches. Capacitors are hyper sensitive to touches, so much so that you have to tone it down and filter out all the noise... You can easily go into the software and figure out where the pinch-zoom controls are and fix them...
I am running codefireX's build and my pinch to zoom works perfectly in gallery, chrome, maps, camera. Registers my touch input no mater what I try.
If this is a deal breaker for you, I would be more worried about thermal throttling issues tbh... Those are actually hardware related.
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So you're saying right out of the box you can go into settings and configure pin h to zoom to react immediately rather than after transversing half the screen before it starts reacting?
Well, this is xda developers where we hack software and improve it for our own uses. Its part of the fun. You would have to get into the kernel for that
pinch zoom on my ROM setup right now begins the second I place 2 fingers on the screeb
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elliot.newnham said:
Well, this is xda developers where we hack software and improve it for our own uses. Its part of the fun. You would have to get into the kernel for that
pinch zoom on my ROM setup right now begins the second I place 2 fingers on the screeb
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Awesome . hopefully Google will fix it for stock users
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elliot.newnham said:
Well, this is xda developers where we hack software and improve it for our own uses. Its part of the fun. You would have to get into the kernel for that
pinch zoom on my ROM setup right now begins the second I place 2 fingers on the screeb
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Which ROM and could you perhaps record a video for us?
elliot.newnham said:
Well, this is xda developers where we hack software and improve it for our own uses. Its part of the fun. You would have to get into the kernel for that
pinch zoom on my ROM setup right now begins the second I place 2 fingers on the screeb
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I'd like to know wHich ROM that is as well. I ordered my N4 but I definitely want to fix this before I do anything as.

Buying Used : Tips?

Im purchasing a used Note 10.1 tomorrow and was wondering if there is anything specific I should be looking for on a used unit. It is supposedly in perfect condition and just has not been used as much as the original owner thought he would.
Thanks!
There was one guy who had problem with the S pen, so see if its work 100% as it should.
Physical condition is important but i think u will see that anyway.
ps. if the guy has flashed something on the note 10.1, then do check if the tablet has still its IMEI
there was one guy who had lost his imei and tried to sell me his phone lol
Make sure camera works. Check to see if there are any dead spots with touch screen(go to app drawer & touch different icons & move them around), make sure s-pen works, check for scratches or marks on screen & body. If you can tether to your phone or in a place with wifi, make sure you can connect to wifi, see if maps can get a gps lock.
Running a benchmark or two is not a bad idea.
GodSlayer said:
Running a benchmark or two is not a bad idea.
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Yes it is.
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younix258 said:
Yes it is.
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Why exactly?
Thank you guys. Examined it, especially the s pen and this tablet was definitely the right choice!
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Compass not working?

I do a lot of bike and walking navigation with Google maps and was wondering if it is normal for the Map to be rotated slightly diagonal even though I'm walking or biking facing the direction of the street. Seems like the compass is not working. These are some examples where I was facing the direction of the street:
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vandizzam said:
I do a lot of bike and walking navigation with Google maps and was wondering if it is normal for the Map to be rotated slightly diagonal even though I'm walking or biking facing the direction of the street. Seems like the compass is not working. These are some examples where I was facing the direction of the street:
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tap the red compass thing. does that fix it?
schluety said:
tap the red compass thing. does that fix it?
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No, that just puts the Map in a fixed position
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Any suggestions? I don't want to rma this phone because it's perfect otherwise.
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anything with a magnetic field or an electrical field can throw off the compass from slightly to a lot.
It may be that that is the way the map is supposed to be, but Back in the earlier days of the mobile compass, they has to be calibrated, I had to do it all the time with my HTC wildfire, and once or twice with the N4 The easiest method for this is to hold the phone in your hand screen up with the application that you want to use the compass on screen, and turn your hand in a figure of 8 motion, moving only your wrist. There should be a video on youtube if you need. Hope this helps
Sent from my Rooted NEXUS 4
Maybe that's the way the Map is supposed to be. It's always slightly slanted. Can anyone confirm? Thanks
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