Orux and 10Hz external GPS receivers

[brosky]

Hi,

Does anyone here uses Orux paired with a external gps like Garmin Glo 2 ?

I'm interested if the map/position is updated 10 times a second.

Also, any recommendations of external receivers that work with orux ?

[lneam]

have you bought the garmin glo 2

[brosky]

not yet, i'll test it this weekend during raceday

[brosky]

I've tested Glo2, works but I didn't see any significant improvement:
- map still updates/moves once per second. I was expecting that a 10Hz GPS receiver will update the map 10 times a second therefore my location will be updated more often. Maybe I'm missing
- bluetooth disconnects quite often - maybe it's the phone.

Any suggestions on how to update the map move often ?

[lneam]

https://www.youtube.com/watch?v=HF-2hZUPkxk

this is a video about the glo 2 with android use. We can see on time 2:33 how fast is the update

[lneam]

some personal thoughts

- when we connect one external gnss receiver to a tablet or smartphone with android, what we are waiting for next ?
1. the map updates / refresh is faster ?
NO, the navigation app collects sooner the location signal. That's all. Don't expect more accurate location or something else. Multi hertz does not equal with cm accuracy.

2. benefits from multi hertz receivers
when we are recording our path, if we have more and near location dots, the path will have better resolution

3.
the navigation app we use (sygic, tomtom, orux), must have support for multi hertz receivers. So, we must found this setting and set to the right value. Especially for track recordings

4.
do we have set up ours device suitable, to support the external receiver into android settings ?
1. developer options - mock locations
2. bluetooth drivers / app

[orux]

The rendering of maps can cause problems at those speeds, but you can try the latest beta that is uploaded in the forum, I have added an adjustment that allows to increase (to a maximum of 5 Hz) the painting.


orux

[brosky]

Hi Orux,

I've tested the 10hz option with a Garmin Glo2 and it works flawlessly ! Thank you for this.

I haven't noticed any major slowdowns or high battery usage (tested on a One+Nord N10 and Galaxy Tab S5e)

For bridge application i've used https://play.google.com/store/apps/details?id=com.clearevo.bluetooth_gnss&gl=RO - the recommended app from Garmin is missing from the store.

Now, you mentioned that you allowed only 5Hz. Is it possible to select 3-5-7-10Hz range ? For users who don't care about battery life or have short tracks ?
My regular competition track is 30-50km, done in 4-5hours - so a full battery with a powerbank is enough.

[lneam]

from my knowledge, companies they produce external gnss receivers say
- for pedestrian use, 1 Hz is OK (ALL the smartphone we know)
- for speeds over 25 Km, they suggest 5 Hz
- for speeds from 100-200 Km, they suggest 10 Hz
- for speeds from 200-500 Km, they suggest 20-100 Hz with RTK help
as an example we have the "vboxautomotive.co.uk"

about garmin Glo 2
have you made any comparison with the recording path of this external gnss against the internal of the smartphone - side by side ?

do you know this product ?
https://cbgps.com/p10/index_en.htm

this ?
https://gpswebshop.com/collections/top-1-5-sellers/products/top608bt-high-precision-usb-bluetooth-gnss-receiver-centimeter-level-accuracy-multi-band-rtk

[lneam]

Now, you mentioned that you allowed only 5Hz. Is it possible to select 3-5-7-10Hz range ? For users who don't care about battery life or have short tracks ?

why you need navigation software with variable Hz support, if your gnss receiver doesn't allow this variable Hz support ? only professional devices has this feature

if external gnss has variable Hz support, the navigation software must have 0 Hz input. This mean = equal to data input