Hi.
I have had my HW for about 5 days. Love it apart from the heart rate monitor. It mostly reports 47. 85-95 is closer to my normal heart rate. I've taken the sticker off the back. Tried changing the position and tightness. Tried other software. Ie Google fit. Any ideas what else I can check. If is this a fault and I need to replace the watch.
Any ideas of experience would be welcome.
Thanks
Just a quick note. The green lights seem when its checking, are offset. The green light is in the middle of one strip and the edge of the other. If its working fine for you, are your lights the same?
Thanks
Related
Now i love my desire... Its fantastic but it isnt without some issues...
One ive noticed that could be a problem esp when your working with reality overlay apps...
The compass doesn’t seem to work that well...
Its slow to respond to movement and even when it does move its horridly inaccurate. north seems to have a room for error of 60-90 degrees.
Has anyone else noticed this? Is it the same for most digital compasses? or do i have a faulty module?
Hi Nutsy,
I've also noticed these issues with the compass in the Desire. I've worked with magnetic compass chips before and I think it's all to blame on the way these compasses work:
To sense the earth's magnetic field they use a two- or three axis magnetometer. Although it's a very accurate way to sense the earth's weak magnetic field, it's also very sensitive to any other magnetic field. That means that the presence of ferromagnetic materials (like iron) or electrical currents in the vicinity might really screw up your compass reading.
So electrical wires, iron piping, laundry machines (almost anything that you would find indoors that runs on electricity or contains iron), will interfere with your compass.
a good alternative would be to use a gyroscopic compass like they do on submarines, but I don't think these fairly expensive devices aren't used in mobile equipment yet. So the only thing to do is to stay away from anything that might interfere.
The slow response to movement might be caused by internal filtering. These analog sensors produce quite an amount of measurement noise. In order to cancel this, they probably use some sort of filtering algorithm like this one:
step 1 -> Take a new sensor reading.
step 2 -> Add it to a buffer that contains the last 25 readings.
step 3 -> Calculate the mean value of all measurements in this buffer. This will be the compass heading that is sent to Android OS or your application.
step 4 -> Repeat this cycle every 25 milliseconds.
Hope this answers your questions. Of course if you compass readings never make any sense under any circumstances, the thing might just be broken...
Friendly regards,
Joost
Ps.
There's an App in the market called "Metal detector" that actually uses the interference "problem" with the compass to detect ferromagnetic metals.
Wow Thanks for the really detailed reply...
Im glad its not just me then... Didnt really want to RMA it over a dodgy compass unit.
And thanks for letting me know about that app... sounds usful... I guess it could be used to detect wireing in plaster as well?
You're welcome.
In theory you could use it to detect metal or wires in a plaster wall. I've just tried it, and it works quite well. On the other hand, I really don't want to risk electrocution by trusting a telephone to find electrical wires...
My compass is shocking. Actually points closer to South whenever I open Compass or a programme which uses the compass like G-sky. I have to calibrate it every single time.
Thing that annoys me, is if I calibrate, then exit the programme and immediately re-open the programme, it doesn't remember the calibration, it reverts to pointing in a ridiculous direction.
I want to hit it with my fist.
Addtitionally, think it's broken?
jimmymagix said:
My compass is shocking. Actually points closer to South whenever I open Compass or a programme which uses the compass like G-sky. I have to calibrate it every single time.
Thing that annoys me, is if I calibrate, then exit the programme and immediately re-open the programme, it doesn't remember the calibration, it reverts to pointing in a ridiculous direction.
I want to hit it with my fist.
Addtitionally, think it's broken?
Click to expand...
Click to collapse
Yesterday I found out the same thing... Sometimes I cant even get it working after calibration. I was beginning to think that this happened because I dropped it once pretty hard. What should we do next? Can this be solved by replacement with warranty or something?
Smauglys said:
Yesterday I found out the same thing... Sometimes I cant even get it working after calibration. I was beginning to think that this happened because I dropped it once pretty hard. What should we do next? Can this be solved by replacement with warranty or something?
Click to expand...
Click to collapse
Make sure your phone isn't in a case which uses magnets to keep it closed, as they affect the compass. If you're affected, take your phone out of the case and try again. Also, try out in the open, away from structures which may contain a lot of ferrous metal.
In my case the problem is due to powered-on wi-fi module. Turning off wifi, compass works fine. Could Anyone elserepeat my experience?
poldie said:
Make sure your phone isn't in a case which uses magnets to keep it closed, as they affect the compass. If you're affected, take your phone out of the case and try again. Also, try out in the open, away from structures which may contain a lot of ferrous metal.
Click to expand...
Click to collapse
Yes I know that. Tried out doors, and wheres no metal... When I had the G1, the compass worked normally.
In my case the problem is due to powered-on wi-fi module. Turning off wifi, compass works fine. Could Anyone elserepeat my experience?
Click to expand...
Click to collapse
Just tried what you said. It did not help for me. I turned it of completely.
Smauglys said:
Yes I know that. Tried out doors, and wheres no metal... When I had the G1, the compass worked normally.
Just tried what you said. It did not help for me. I turned it of completely.
Click to expand...
Click to collapse
Just went outside to test it again. And I think I found how to get it working. If i launch the compass application, and try to turn the phone in the flat position (on its back), then the arrow moves in random directions. But if i lift the phone that it is facing straight to my face, and then turn left and right a few times, like a steering wheel, the compass "calibrates" as I can see. And then when I lay it down again flat, it starts to work normally. Can anyone try this, if you understood my instructions?
A more accurate way of calibrating the compass is by rotating the phone twice around each axis, ideally you should do this away from anything metallic or any interfering magnetic fields preferably outside.
Er......
Where is the compass?
I dont seem to have a compass! In my list of apps there just isnt one called compass...
The Analogue Compass app is very buggy for me so I use the Compass app -> http://www.androlib.com/android.application.com-apksoftware-compass-qAC.aspx
When taking readings, I;
Always have to recalibrate on startup as far too many objects cause large interferences within the sensor making it go astray, even the charging cable causes it to go berzerk. The known working routine is to calibrate by fast twisting and turning the phone [I do it after running the built-in figure 8 calibration routine]
Keep it mid-upper body height with no metals nearby (jewellery/belt/metallic objects minimum >5ft away), holding still and level across the x-axis
Point the upper-end of the phone in the direction I want the bearing of (this depends on the type you use though, I use the digital type)
I spin the phone around and then retake 2 more readings for a total of 3 readings - averaging them out for a final mean reading
I only have 2 directions calibrated through professional consultation when this room extension was built a few years back and know the rough directions all sides this property faces, but in particular, I'm 100% sure of the exact degree reading one wall faces. This app using the built-in compass sensor reads that bearing spot on everytime after calibration (fluctuation is 1-2 degree max).
Some friends in a Lithuanian Android forum, suggested to do this, like it is shown in the video. Works perfectly every time. And I thought that something was wrong, because I never had to do anything like this on my G1.
Youtube video ID, because I cant add link because of spam protection http://www.youtube.com/watch?v=sP3d00Hr14o
The compass is about 10' to 15' out on my phone - i normally wouldn't care that much except the built in locations app uses the facing direction instead of the travel direction... so it looks like you are driving down a road diagonally.
Any ideas of how i can re-calibrate the compass - or make locations use the direction of travel instead of the compass?
Thanks
Kris
Maybe it is a magnetic compass, and hence points to the magnetic north?
BTW I have the same with mine. Mine is about -15' out.
The GPS Status app has something to 'calibrate' with, but the results stayed the same IMO.
Well I think that really su* ... y can't it just use the direction of travel like other software - or have the option
I know man, have the same issue. I have proper compass 'analog' and a digital one and the one on hd is a joke. Tried everything, it's still off. Most likely it's software issue here. Not sure though, but looks like it. Mine is -20 and less or more useless.
Mines off about that too.
When using the one in my Hero, I could wave my hand in a infinity symbol shape (or figure 8 on it's side) out in front of me for a few seconds, that would get it fairly accurate for a little while. Haven't tried it on the DHD, but it might work?
I have exactly the same issue. Annoyingly it is also 10 to 50 meters off on my location......
HTC Hub also shows me 20 meters off of my location.......
Anyone have a solution let me know!!
Good i managed to calibrate it to be fairly accurate.
There is still a minor distortion which i assume is caused by battery but it's an improvement never the less.
Basically go to maps. Then hold your phone by pointing your screen towards the sky and start making infinity symbol in the air. In such way like if you were trying to paint it on the wall in front of you. Do it for about 30 sec, then it should show you a fairly accurate readings.
Hope it helps, worked for me.
Thanks Madeinru........ it helps a bit but hasn't completely fixed it.
Probably will go back to the shops and exchange it - its still annoying the hell out if me
MadeIRu, could you describe your method in a lilttle more detail. I thought you had to hace your device towards the sky and make a movement like drawing an 8 horizontally al the time the device facing the sky. Thanks
Hello there
What i did is:
Switch on any compass app or maps.
Point your device with your screen towards the sky, same way when it basically lies on the table.
Then start making 'infinity' like sign in the air while your screen points at the sky all the time.
Just like you wanting to paint an 'infinity' sign on the wall.
Just like the guy in this video:
http://www.youtube.com/watch?v=qOkErjFKiD8&feature=related
But i was pointing my screen upwards all the time, so my phone stayed in the same position at all times.
Do it for about 30 sec or so.
Regards.
download compass from market, it has a calibration feature builtin
not sure if it will help you're situation though, i guess it's supposed to.
It would be great if somebody can test it, thanks in advance.
How to test:
put a camera in front of the screen and play around with the shutter speed and the brightiness of the screen. When lines appears on the screen, its not good => pwm, without lines => good :good:
edit: i had links for pwm explanation, but not enough posts, sorry..
The question is about pulse width modulation, which I'm reading occurs when both of the following are true:
- you are using an LED light source with variable brightness
- you are using a camera with a rolling shutter
http://provideocoalition.com/aadams/story/pulse_width_modulation_is_not_your_friend/
The camera on the note 8 does not have an LED flash, so I think the poster either now knows that it won't be an issue, or is curious as to whether display brightness on the screen is controlled by pulse width modulation or a different technique.
In the latter case, I don't know, and since this is stuff that can't be seen by the eye nor in the viewfinder, but mostly in photo editing suites per the article I link to, I'm not sure why it's an issue here.
Hi roustabout
I think we dont speak about the same topic.
What I mean is the flickering of the display. A good example is found on youtube: Nexus 7: no PWM on LCD
A lot of LCD use this technology to dim, but its not proper dimming, just switch on / switch off the the lcd very quickly.
Some people have problem with this flickering but dont know that theres a problem, so for example dry eyes, getting tired very fast when working on the computer..
I think more the 95% of the usual monitors use this technique.
I hope this helps.
no, we're talking about the same thing:
'curious as to whether display brightness on the screen is controlled by pulse width modulation or a different technique.'
The article I found thinks it's not visible; what you've read or experienced suggests it's problematic.
What I can say is the first-gen ipad was very hard on my eyes; the note 8 is not like that, but not as good as e-ink. Much more fun than e-ink, though!
I bought a manufacturer refurbed Moto 360 first gen the other day. I have noticed that the Heart Rate Monitor is very inconsistent, meaning that if I go into moto body or Google fit and tell it to read my heart rate it fails probably 4 out of 5 times. Its pretty tight on my wrist and I hold still but still no luck. I do see the little green light come on when the watch is off so I know it is working.
Anyone have this issue and any advice on getting it to work. I got this watch to supplement Strava with my heart rate on bike rides so its value is not so great if this doesnt work.
I have always found the heart rate monitor in my 1st gen Moto 360 to be hit-or-miss when manually initiating a heart rate check. It usually takes 3 attempts to get a reading.
I wouldn't even consider relying on it for physical activity tracking.
I was getting this the other day. Then took the watch off and wiped the sensor and tried it again and it worked first time, sweat and dead skin can easily block it.
Hi, when I switch the heart rate monitor to always on (or the stress measurement) ,the step count goes through the roof! For example I wake up in the morning having 3000+ steps already! My wife can confirm I'm not sleep walking
Resetting the watch did not help.
Anyone else having this issue?
I am on the latest firmware.
I also noticed that if I have the default tomcat watch face on, which has a glare effect that uses the gyro to adjust itself, the glare jumps to the extremes as if it was getting wrong readings from the gyro. I was almost convinced that there is something wrong with the sensor but when I switch the continuous HR off, the glare stopped jumping and it smoothly followed my wrist, proving that the gyro works fine. I will attach two videos to illustrate.
https://photos.app.goo.gl/wBNm4ZQf4wRBjFtJA