I bought an Amazfit Stratos few days ago. GPS positioning is perfect but altitude/altimeter totally wrong and unstable. If I go to compass widget and wait for calibration I see tham gps the coordinates and pressure value are stables but altitude is changing between +-200m all the time. Watch's firmware is 2.3.7.0. Any idea?
What kind of activity are you using? Some use GPS while others use the barometer/altimeter. To reset sensors, turn OFF watch for around 15s (restarting IS NOT enough).
I see that problem for example in the compass widget
cesareogallego said:
I see that problem for example in the compass widget
Click to expand...
Click to collapse
That altitude reading is from the GPS. So, the accuracy depends totally on the GPS which I find not very accurate.
The altitude calculated from the barometer isn't that accurate either.
Edit: This is not specific to Pace/Stratos. The altitude calculated using GPS/pressure, in general, is not that accurate.
anox said:
That altitude reading is from the GPS. So, the accuracy depends totally on the GPS which I find not very accurate.
The altitude calculated from the barometer isn't that accurate either.
Edit: This is not specific to Pace/Stratos. The altitude calculated using GPS/pressure, in general, is not that accurate.
Click to expand...
Click to collapse
My old Suunto was very accurate & barometric should be if it is reset to local pressure. But the Pace is totally inaccurate - I often walk by the sea & get wildly different readings.
galwayguy said:
My old Suunto was very accurate & barometric should be if it is reset to local pressure. But the Pace is totally inaccurate - I often walk by the sea & get wildly different readings.
Click to expand...
Click to collapse
GPS Altitude
A device with a better GPS chip would obviously be more accurate than one with a low-cost GPS chip.
What I'm saying here is that in general the accuracy of the GPS altitude reading depends on many factors such as the satellite configurations, signal blockage, and atmospheric conditions. The vertical error is much more than the horizontal error. Even Garmin says it is not uncommon for GPS heights to be off by +/- 400 ft.
https://support.garmin.com/en-GB/?faq=QPc5x3ZFUv1QyoxITW2vZ6&searchType=noProduct
Pressure Altitude
Local pressure with known altitude surely makes the pressure altitude calculation better. Even with that, to get an accurate altitude difference between 2 locations, both measurements must be performed at the same time and hoping the weather (air density, temperature, etc) doesn't go wild at the 2 locations. That's why I say pressure altitude isn't that accurate.
With all that being said, from my initial testing using my Pace, it seems pressure altitude is more accurate than GPS altitude and I'm planning to create an app for the watch to show pressure altitude with reference point calibration. Hopefully, it's more accurate than what is available on the watch now.
The altitude is wrong but the barometric is accurate
cesareogallego said:
I see that problem for example in the compass widget
Click to expand...
Click to collapse
galwayguy said:
The altitude is wrong but the barometric is accurate
Click to expand...
Click to collapse
Check this out. https://forum.xda-developers.com/smartwatch/amazfit/app-paceup-v1-0-altimeter-pace-stratos-t3893743
anox said:
Check this out. https://forum.xda-developers.com/smartwatch/amazfit/app-paceup-v1-0-altimeter-pace-stratos-t3893743
Click to expand...
Click to collapse
Many thanks
Related
HI all,
Got my English version of Amazfit last week.
I was really exited as I intended replacing my old garmin forerunner 405 with the new smartwatch.
On my first run yesterday I wore both watches and ran a usual 9km near my home.
At the end I got 9.03km on the garmin and 8.79km on the amazfit.
The difference is huge for such a distance.
Has anybody else experienced this? I guess this turns amazfit an unusable tool for Runners..!!
A.
you need to get a gps fix first, before starting the activity, have you done that?
when starting an activity, you need to wait for some 15~30 seconds, till you get a fix, and start running/biking/running around with a latex tale.
please try to re-test again, and also make sure that you have the latest version updated of the watch, 1.3.1m
Good luck!
vactirio said:
At the end I got 9.03km on the garmin and 8.79km on the amazfit.
The difference is huge for such a distance.
Click to expand...
Click to collapse
Are you sure the Amazfit is inaccurate and not the Garmin? If i compare Tracklogs from my Garmin Oregon 450 GPS with the ones from Amazfit they are both quite on the same level, the Amazfit does corners even a bit better. If the Amazfit drifts in position, the Garmin does, too.
And as already mentioned, the Amazfit starts a bit off. so if you want precision, wait for the GPS to be ready.
Beleriand said:
Are you sure the Amazfit is inaccurate and not the Garmin? If i compare Tracklogs from my Garmin Oregon 450 GPS with the ones from Amazfit they are both quite on the same level, the Amazfit does corners even a bit better. If the Amazfit drifts in position, the Garmin does, too.
And as already mentioned, the Amazfit starts a bit off. so if you want precision, wait for the GPS to be ready.
Click to expand...
Click to collapse
Hi 1immortal,
Yes I did wait a lot before starting.
In the fist 200m I had 40m of difference.
I thought thats ok - its the satellite fixing difference.
Then gradually this started getting bigger and bigger.
I run with friends who also have garmins and we mostly have a maximum of 50m difference in 10km which is acceptable.
found also this:
https://forum.xda-developers.com/smartwatch/other-smartwatches/amazfit-watch-impression-t3540770
vactirio said:
found also this:
https://forum.xda-developers.com/smartwatch/other-smartwatches/amazfit-watch-impression-t3540770
Click to expand...
Click to collapse
That issues were fixed. Both versions (US and CN) received updates for the GPS firmware. To make sure where the problem comes from you should take a closer look on the tracklogs in a suitable app on your computer. If you provide me GPX files from Garmin and Amazfit i will have a look on it. The shown distance on Amazfit has been quite accurate to the tracklog so far, while Garmin uses other methods to show the distance so i often had different distance on tracklog and on trip computer.
Another indicator is, that the tracklog for the Amazfit is the shortest. Bad GPS receivers usually measure greater distance as the coordinates are inconsistently jumping around and therefore create more meters.
Then you should always do multiple measurements. Sometimes the GPS just goes mad. Over the years i had different Garmin devices and now and then i was walking with a speed of 200km/h and was kilometers off...
Beleriand said:
That issues were fixed. Both versions (US and CN) received updates for the GPS firmware. To make sure where the problem comes from you should take a closer look on the tracklogs in a suitable app on your computer. If you provide me GPX files from Garmin and Amazfit i will have a look on it. The shown distance on Amazfit has been quite accurate to the tracklog so far, while Garmin uses other methods to show the distance so i often had different distance on tracklog and on trip computer.
Another indicator is, that the tracklog for the Amazfit is the shortest. Bad GPS receivers usually measure greater distance as the coordinates are inconsistently jumping around and therefore create more meters.
Then you should always do multiple measurements. Sometimes the GPS just goes mad. Over the years i had different Garmin devices and now and then i was walking with a speed of 200km/h and was kilometers off...
Click to expand...
Click to collapse
Hi Castra,
Thanks for the detailed answer.
I would be glad if you could examine GPX files.
Files attached.
Andreas
Okay, my name is not "Castra" btw.
Castra Regina is the ancient name of a roman fort that is called "Regensburg" nowadays. Thtat's where i come from.
I had a close look at your Tracklogs and did even look at the location in Google Street View. Really nice little town where you live. I think i will have to go to greece sometimes.
Mostly residential buildings so there is not too much influence on the signal. Anyway, the Amazfit does not perform as good as the Garmin and is drifting off in some locations. They are both not bad but the tracklog seems to be really a bit better on the Garmin.
Did you wear both watches on the same wrist or one left and one right? Was there probably someone running next to you that shielded or reflected the GPS signal? If not, the Garmin performs better here.
You did do the OTA Update to firmware 1.3.1m?
See Images, Blue is Amazfit, green is Garmin.
Beleriand said:
Okay, my name is not "Castra" btw.
Castra Regina is the ancient name of a roman fort that is called "Regensburg" nowadays. Thtat's where i come from.
I had a close look at your Tracklogs and did even look at the location in Google Street View. Really nice little town where you live. I think i will have to go to greece sometimes.
Mostly residential buildings so there is not too much influence on the signal. Anyway, the Amazfit does not perform as good as the Garmin and is drifting off in some locations. They are both not bad but the tracklog seems to be really a bit better on the Garmin.
Did you wear both watches on the same wrist or one left and one right? Was there probably someone running next to you that shielded or reflected the GPS signal? If not, the Garmin performs better here.
You did do the OTA Update to firmware 1.3.1m?
See Images, Blue is Amazfit, green is Garmin.
Click to expand...
Click to collapse
Hi,
Sorry about the name... and if you come to Athens I can give you a tour....
I wore Amazfit on the left and Garmin on the right. Amazfit was sometimes "blocked" by my running shirt which was not a thick one as the weather was good enough.
Its very usual that the 6 years old Garmin is blocked by the shirt (specially when its cold weather) but NEVER had a problem with that.
There was a friend running next to me but not blocking me.
So my fear that amazfit is inaccurate is probably true.
Thanks for the time spent. I think this is something runner should know before buying this watch as it turns it to be unusable.....
Latest firmware is installed.
Andreas
vactirio said:
I wore Amazfit on the left and Garmin on the right. Amazfit was sometimes "blocked" by my running shirt which was not a thick one as the weather was good enough.
Its very usual that the 6 years old Garmin is blocked by the shirt (specially when its cold weather) but NEVER had a problem with that.
There was a friend running next to me but not blocking me.
Click to expand...
Click to collapse
Well as the Amazfit is quite good when you are running in one direction and then drifts away in the other it might be that it just lost direct view to some satellites and then used reflected signals which make accuracy notable worse. A person just running by your side or your own body could cause that, while a shirt should not have any influence. So if the person was running to your left it might have had a big influence on the result.
A bit more scientific approach would be to wear both watches on the same wrist and do more runs for comparison before posting that the Amazfit is unusable.
I have been using the watch for two months now and did not experience such huge differences from my other GPS devices. And i really have a close look on many tracklogs as i use it to map new paths in Open Street Maps. I always have the watch and a Garmin Outdoor-GPS with me and use both tracks.
Beleriand said:
I have been using the watch for two months now and did not experience such huge differences from my other GPS devices. And i really have a close look on many tracklogs as i use it to map new paths in Open Street Maps. I always have the watch and a Garmin Outdoor-GPS with me and use both tracks.
Click to expand...
Click to collapse
I don't really agree with you
I run with Garmin for approx 5 years and I rarely got big deviations and it was always +/- 30m.
When you wear a watch you need to know that it works well in order to evaluate your pace.
As you saw in the maps Amazfit does not record well and this cannot / should not be explained by minor factors (left right hand).
The only really acceptable factor could be big buildings and bad weather. This is not my case.
I also searched on the net and found that there are some references about bad GPS reception.
Just for the info, why do you run with 2 GPS devices?
Andreas
vactirio said:
Just for the info, why do you run with 2 GPS devices?
Click to expand...
Click to collapse
I do not run with two devices but when i explore new areas or when i am Geocaching i use the additional Garmin GPS to get a second tracklog and to store Points of interest as new waypoints.
That is helpful sometimes when editing in OSM.
If Garmin works better for you, stay with it.
Their devices are quite good but a bit expensive. I had a few over the last 17 years.
Another test today in steep terrain. Today i had some minor drifts from the Amazfit compared to Garmin, previous tracklogs and OSM data, see attached image.
(Garmin magenta, Amazfit cyan)
The Amazfit really should get another update but as the sensor is quite new, chahces are good to get one.
Weirdest thing is that my Garmin created 725 trackpoints while the Amazfit created 14690. Distance 6,5 km....
They should probably reduce the amount a "bit" which could also save some energy.
I've received my Amazfit Pace version few days ago, updated to last US version. I noticed than GPS accuracy inside the building is terrible. I start Run workout in the office walking around 200-300 meters inside the room. After 6 hours Amazfit counted 30 !!! km of distance. I was shocked so much. Initially I was planning to use Amazfit for itinerary tracking or geotagging tracking during holiday trip. But with such accuracy it's not possible. Anyone has the same problem?
Noramas said:
I've received my Amazfit Pace version few days ago, updated to last US version. I noticed than GPS accuracy inside the building is terrible. I start Run workout in the office walking around 200-300 meters inside the room. After 6 hours Amazfit counted 30 !!! km of distance. I was shocked so much. Initially I was planning to use Amazfit for itinerary tracking or geotagging tracking during holiday trip. But with such accuracy it's not possible. Anyone has the same problem?
Click to expand...
Click to collapse
Are you serious? GPS inside buildings for sure isn't working!
alexinc said:
Are you serious? GPS inside buildings for sure isn't working!
Click to expand...
Click to collapse
Amazfit show me GPS as available inside the building because of large windows. BTW, if signal is low why Amazfit distance is jumped so much? I saw that distance on the screen was counted and increased almost every second without any watch movement.
I did the same test at home. If Amazfit is located near the window then distance is not counted and stuck on 0.00km. If I try to walk inside the room the the distance start to count and after few minutes show 300-400 meters. Strange.
Noramas said:
If I try to walk inside the room the the distance start to count and after few minutes show 300-400 meters. Strange.
Click to expand...
Click to collapse
It is not strange. GPS works by measuring the time signals from different satellites take to reach your device. Then your position is calculated by triangulation.
It is only accurate if you receive direct signals from satellites all over the sky. Inside a building you have no sky view so all the signals you get are reflected by objects like buildings, mountains. If they are reflected they travel a longer distance and so the calculation loses precision. That causes jumping positions and therefore creates some mileage.
Older, less sensitive GPS devices only used direct signals and were much more precise but they also completely lost position in dense forests and between high buildings.
All modern GPS consumer oriented modules on the market are optimised for a quick fix, even under worst condtitons, then comes power saving and price.
Precision is the least of the requirements as you can adjust your position to a map when using it for navigation. (Lock to road)
Good for all the smartphone manufacturers and Google Maps users but bad for all outdoor enthusiasts.
same issue
Hi!
I got the same issue. Amazfit CN version. Firmware Rel 9 (1.2.14) from XDA.
Running in forest, orienteering. Amazfit watch in Trail run mode always reports 400-500m less within 7-9km distance. Difference is confirmed by 5-6 runs.
For example today Amazfit watch: 7.97km, Endomondo (Samsung S7): 8.42km.
I see also issues with max speed, its unreal on Amazfir watch (crap should be filtered out).
I plan to do test using Amazfit and my old Garmin Forerunner 300 in next weeks to prove test results.
Kind regards,
J.
js_online said:
Hi!
I got the same issue. Amazfit CN version. Firmware Rel 9 (1.2.14) from XDA.
Running in forest, orienteering. Amazfit watch in Trail run mode always reports 400-500m less within 7-9km distance. Difference is confirmed by 5-6 runs.
For example today Amazfit watch: 7.97km, Endomondo (Samsung S7): 8.42km.
I see also issues with max speed, its unreal on Amazfir watch (crap should be filtered out).
I plan to do test using Amazfit and my old Garmin Forerunner 300 in next weeks to prove test results.
Kind regards,
J.
Click to expand...
Click to collapse
Hi J.
After opening this thread I did get in contact with Huami.
I informed them about the GPS accuracy problem and they were kind enough to send me a new watch.
Unfortunately this did not help. The new watch had exactly the same bad behavior.
So I stopped using the amazfit. I found also to have more than 200-300m less at a 9Km run.
As you probably know that's too much for such a distance.
Below is the mail I did send to Huami.
I did not get yet an answer to that and I think I will not get one
---------------------------------------------------------------------------------------------------------------------------------------------------
Got yesterday the new Pace. Pretty exciting I must admit.
I did a 9,5km run on purpose last night in order to test it.
On my left hand both Amazifit Pace and Garmin 405.
Unfortunately the results were not better and much disappointing
So to start I should say that I run in rural areas but in open space.
I attached to this email two GPX files in order to get examined by your team.
One from my old Garmin and One from Amazfit.
On the 9,5km run I got a liithe more than 200m of difference.
This difference is translated in 6 seconds of pace difference which is vary big for a runner.
Pace difference is shown bellow:
(strava is from amazfit and runkeeper is for garmin)
So I uploaded both GPX files on http://www.mygpsfiles.com/app/ in order to visualize them and the findings were interesting.
It seems that though Amazfit gets much more points than my old Garmin, those points are often very inaccurate.
Please find bellow some examples.
Orange trace is Garmin.
Blue trace is Amazfit Pace.
Amazfit (in blue) seems really off road.
Here it seems to loose distance. I did run as Garmin says to the roundabout
I must emphasize that its really an open space run with a very good GPS signal reception.
So it seems that its something going wrong with the GPS of the Amazfit.
I am wondering if there is a calibration problem with Europe/Greece.
vactirio said:
Hi J.
So I stopped using the amazfit. I found also to have more than 200-300m less at a 9Km run.
I am wondering if there is a calibration problem with Europe/Greece.
Click to expand...
Click to collapse
Thanks for explanation and visualization. Unfortunately I can't link my workouts with street as there are no streets in forest
I am little bit surprised about this: Endomondo makes less measurements and counts more, Amazfit makes times more measurements and counts less.
I was searching answers and found this article online (type: www dot fellrnr dot com/wiki/GPS_Accuracy), must read... Explains many issues from technical perspective.
I believe and hope that issues are related to software (firmware) of GPS chip and post processing and will be solved in the next firmwares.
Please also note: "AMAZFIT includes the world's first 28 nm Sony GPS sensor". As you know first is always first and requires debugging
"Sony – GPS (with 1/10th the power!) now sampling.
You know how using mapping apps on your smartphone kills your battery? Well now there’s hope. Sony’s getting some super impressive results with their new GPS using 28nm FD-SOI technology. These GPS are operated at 0.6V, and cut power to 10x (!) less than what it was in the previous generation (which was already boasting the industry’s lowest power consumption when it was announced back in 2013)."
You can find more info online.
I completely agree that for running numbers are important. Especially for high pace 4.30 and below, because each seconds counts. I will take Amazfit to my next street workouts for marathon training to do the same gps data analysis as you did above.
My strategy is to wait for firmware updates and hope issues will be resolved.
Thanks.
The barometer on my Pace is stuck at the same reading. I have tried gently blowing in the hole, cleaning it etc. I also tried a factory reset.
But the altitude is changing. So is altitude determined by GPS or the Barometer ?
Hi
The elevation is measure using the barometer and not by GPS.
Seems your barometer faulty that not reading any elevation. Same time, did your battery life span normal as it in stanby mode (leaving untouch on table) using 10% over 24 hours (plus minus)?
Did you wear it during shower or swimming. Thia watch is only resistance to water splash in small quantities.
Probably you could explain the last successful of elevation reading and then become faulty of the activities you did.
galwayguy said:
The barometer on my Pace is stuck at the same reading. I have tried gently blowing in the hole, cleaning it etc. I also tried a factory reset.
But the altitude is changing. So is altitude determined by GPS or the Barometer ?
Click to expand...
Click to collapse
I am aware of this fault & my battery seems fine. I have never got the watch wet & it's only a few weeks old .
The barometer is permanently at 1024 but the altitude does change.
galwayguy said:
The barometer on my Pace is stuck at the same reading. I have tried gently blowing in the hole, cleaning it etc. I also tried a factory reset.
But the altitude is changing. So is altitude determined by GPS or the Barometer ?
Click to expand...
Click to collapse
Watch the solution for most cases:
https://forum.xda-developers.com/showpost.php?p=78127873&postcount=36
Melkor said:
Watch the solution for most cases:
https://forum.xda-developers.com/showpost.php?p=78127873&postcount=36
Click to expand...
Click to collapse
This worked Many thanks
Now if only someone made a simple up down indicator to track rises & falls in air pressure
galwayguy said:
This worked Many thanks
Now if only someone made a simple up down indicator to track rises & falls in air pressure
Click to expand...
Click to collapse
For some activities you can enable the data fields: altitude gain and altitude drop, may help.
Melkor said:
Watch the solution for most cases:
https://forum.xda-developers.com/showpost.php?p=78127873&postcount=36
Click to expand...
Click to collapse
Thanks. There is an app that puts pressure changes on a graph but it's continuous so collect huge amounts of data. I would of thought that the dev could easily add interval measuring.
It's a waste to have a barometer that has a limited use. It could be like the barometer on a Suunto watch.
galwayguy said:
Thanks. There is an app that puts pressure changes on a graph but it's continuous so collect huge amounts of data. I would of thought that the dev could easily add interval measuring.
It's a waste to have a barometer that has a limited use. It could be like the barometer on a Suunto watch.
Click to expand...
Click to collapse
What app?
lfom said:
What app?
Click to expand...
Click to collapse
https://amazfit-watch.blogspot.com/2018/01/apk-barometer-graph.html
Solved
Hello Everybody,
So after a lot of reading, it looks like this wonderful Amazfit Stratos could perfectly matches with all my new hopes and finaly
substitute for a perfect relation equipement/price ;my old school Suunto X6)
Though, there is often a "but",
I'm pretty sure this special use could interest a lot of people in specific outdoor activities, and hope we will find a way
So
I'm skydiver and would like use the watch at least under canopy for landing. (I doubt about the speed refresh while freefall, but not the matter)
Means I need calibrate manualy the altimeter on 0 (zero) before going in the plane, and landing safely after the jump on same altitude I had calibrate just before
Means probably too, the altimeter should works imperatively on just barometric data...?
Is there a solution to reach my goal? even if I should try to tamper the firmware or kind of push a special room??
Any idea is welcome))
Anyway sorry for my unperfect english
I was planning to build an apk that could do it. Because I also need it for paragliding.
Like configure current air pressure at sea level.
Calculate the current hight based on the air pressure etc.
I know the app GreatFit https://forum.xda-developers.com/smartwatch/amazfit/app-watchface-greatfit-v1-1-settings-t3791516 has the option to show your hight on the watch face.
I would be extremely wary of this. My Pace barometer is pretty accurate but the altitude isn't. I live by the sea so I have the perfect opportunity to test it. There is no way to zero or calibrate.
Interesting.
I was also planning to create an app for this, then I realized where the heck I could get the current temperature from. My pace doesn't have a thermometer, does it?
I am no expert here, but I think we need the pressure AND the temperature to accurately calculate the altitude. The altitude reading from the watch can't be accurate if the temperature isn't taken into account or perhaps the watch just gets the altitude from GPS.
thx for your answers
Anox, for what use do you wish realize this app?
So
I'm pretty sure I had read about the Stratos the altitude is linked to the GPS( after searching again, of course impossible to find
again the intel)
Effectively, On the Suunto X6 there exists also a temperature probe; I don't know if it use it to manage the altitude simultanously with the barometer
Then, looks like could be more simple to build an app than modify totaly a ROM)) that's already good news
How many times it could takes to build this kind of app?
The stratos and pace have barometer sensor, maybe it could be enough to make a try?
(i need specify with Suunto X6, by day I often have 5/10 meters of variation, I could reset and calibrate on the ground, or not,
15/20 sometimes, 30 meters when weather changes totaly though in this case we stop jumping)
I guess isn't either a problem for Istaveren while paragliding, 5 to 20 meters could be corrected by vision and experience?
Finaly
I found this
"Running mode uses GPS for altitude. trial run mode uses the barometer for altitude"
here
https://forum.xda-developers.com/smartwatch/amazfit/app-barometric-altitude-amazfit-pace-t3765765
looks like it depends quite of the mode...
eFreDosS said:
thx for your answers
Anox, for what use do you wish realize this app?
Click to expand...
Click to collapse
It's an altimeter that can show altitude based on pressure. You can also use it to measure the height of an object.
Then, looks like could be more simple to build an app than modify totaly a ROM)) that's already good news
How many times it could takes to build this kind of app?
Click to expand...
Click to collapse
I've been working on it for some time now, currently testing it. You know it's not easy to test this kind of app, 'cause I don't have a private jet. If time allows, I may release it this weekend.
I found this
"Running mode uses GPS for altitude. trial run mode uses the barometer for altitude"
here
https://forum.xda-developers.com/smartwatch/amazfit/app-barometric-altitude-amazfit-pace-t3765765
looks like it depends quite of the mode...
Click to expand...
Click to collapse
Right. And the compass widget uses GPS.
@anox:
I'm looking foreward to your app. Especially if it has the ability to calibrate the altitude.
@eFreDosS:
"Running mode uses GPS for altitude. trial run mode uses the barometer for altitude"
Click to expand...
Click to collapse
This rumor is quite persistent but was never proven and I'm quite sure it is wrong. From my experience with the pace it seems, that every activity with altitude measurement is starting by using the altitude from the GPS to calibrate and later on some mix of GPS and barometer to measure the changes in altitude. To realize this one must use the data from the pace directly since as soon as the data is processed in the phone app, altitude data is corrected on the base of an online altitude/shape map.
The stratos and pace have barometer sensor, maybe it could be enough to make a try?
Click to expand...
Click to collapse
that every activity with altitude measurement is starting by using the altitude from the GPS to calibrate and later on some mix of GPS and barometer to measure the changes in altitude
Click to expand...
Click to collapse
Remember slightly in all my reading some people had same feeling as you....you surely right!
So, with what we have as data;
"yes": shutdown the gps source informations, only use barometer and add possibility to reset/calibrate ??
cause I don't have a private jet.
Click to expand...
Click to collapse
Me neither)) It's winter, I don't jump currently(anyway I still don't have the Stratos dream), though perhaps someone on the thread could help to test the altitude tool created ?
nhedgehog said:
@anox:
I'm looking foreward to your app. Especially if it has the ability to calibrate the altitude.
Click to expand...
Click to collapse
eFreDosS said:
Me neither)) It's winter, I don't jump currently(anyway I still don't have the Stratos dream), though perhaps someone on the thread could help to test the altitude tool created ?
Click to expand...
Click to collapse
Check it out https://forum.xda-developers.com/smartwatch/amazfit/app-paceup-v1-0-altimeter-pace-stratos-t3893743
simply "WoNdErFuL" thank you very much for your precious time
I bought Amazfit Bip two days ago, but barometer is only showing very low hPa (948.3-951.5) although the weather is clear and sunny (30 Celsius), is this normal or is this sensor defective?
Thank you for your help!
blackmatrix64 said:
I bought Amazfit Bip two days ago, but barometer is only showing very low hPa (948.3-951.5) although the weather is clear and sunny (30 Celsius), is this normal or is this sensor defective?
Thank you for your help!
Click to expand...
Click to collapse
I have the same problem. Were you able to resolve this?
Did you check if it measures differences in air pressure correctly? Sometimes the body heat from your wrist can throw off the sensor as well.
I've noticed that the baseline elevation stats on my unit are off by around 30 meters, but the relative elevation stats are usually accurate.
Ideally there should be an option for manual recalibration but I doubt that Amazfit will ever add such feature, especially now when the device is already a few years old.
Your barometer is just fine. I had the same issue ( which was infact not an issue).
Go through this thread.
https://www.reddit.com/r/amazfit/comments/mkc7y9/_/gtgzy3y
I always wondered what would happen at Panama Canal. Which side would be sea level.
Honestly, the GPS is a ****. One week ago I did a small running. The GPS showed me about 5% less then the reality. For such a price of the watch it is OK. But yesterday I did the same trail, same weather conditions, but the watch showed me by 28% more! That's not acceptable even for the price of GTS...
Honestly, even the pedometer shows better results...
It's not about weather conditions. It's about currently available GNSS satellites over your head. GNSS is not static.
No, GTR and GTS have a badly designed antenna that results in a very weak signal. They found a workaround that helps if you keep A-GPS up-to-date and use Amazfit app and you walk/run close to roads (it smooths the path just like car navigation systems).
I read that calibration of compass helps GTS with GPS, but I do not know how to do that...
Ok, I found how to calibrate the compass, will see at weekend if it helps...
OK, so after the compass calibration the GPS is pretty OK, the difference is around 5%, it counts down the turnings so shows a little bit less. I compared it with Huawei Pro 3 and the result is the same.
I have tested the GPS of the GTS and I have to say that I'm impressed. I've read many bad comments but what I see is actually pretty accurate. I have compared the results with a Garmin Venu and the results (avg pace, distance) are practically de same (probably within error margins). I can definitely say that the GPS accuracy is on par with the Garmin. The only difference worth noting is the instantaneous pace, in the garmin it's more stable but the avg pace are almost the same. I only wished to be able to customize the metrics during a workout, meaning to be able to move the avg pace on the first screen.
PhilippeMulot said:
I have tested the GPS of the GTS and I have to say that I'm impressed. I've read many bad comments but what I see is actually pretty accurate. I have compared the results with a Garmin Venu and the results (avg pace, distance) are practically de same (probably within error margins). I can definitely say that the GPS accuracy is on par with the Garmin. The only difference worth noting is the instantaneous pace, in the garmin it's more stable but the avg pace are almost the same. I only wished to be able to customize the metrics during a workout, meaning to be able to move the avg pace on the first screen.
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I agree, with latest update and a-gps update, we went skiing and I had no problem GTS tracked my speed, skiing paths and everything very nicely without problems. GPS lock on the beginning needed about 5-max10 seconds to lock.
I'm very satisfied with it