Re: [OSM-talk] GPS Watch

[Mike Thompson]

Russ,

Thanks!  So many options, even from this one vendor.

Mike

On Thu, Dec 28, 2017 at 10:03 PM, Russ Nelson  wrote:

> Craig Wallace writes:
>  > Or another option is the Garmin Foretrex 601. It is much bulkier and
>  > heavier than most watches, maybe a bit too big to wear on your wrist.
>  > But OK if you attach it to a rucksack strap. It has much better battery
>  > life - it claims 48 hours. It uses AAA batteries, so you can carry
>  > spares if necessary. And probably more accurate - should be a bigger
>  > antenna, and it can use GPS, GLONASS and Galileo.
>
> Forerunner is designed for runners. Foretrex is a GPS receiver. Get
> the Foretrex.
>
> --
> --my blog is athttp://blog.russnelson.com
> Crynwr supports open source software
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Re: [OSM-talk] GPS Watch

[Simon Poole]

On 24.12.2017 00:05, Tom Pfeifer wrote:
> I'm always wondering why people would wear a GNSS logger on the wrist,
> where the 70% water mass of the wearer's body is always shielding half
> of the satellites.
>
> On top of the head would be a much better position for the receiver,
> at least for the antenna, thus I wonder why there are so many GNSS
> watches, and no GNSS hats?
Because it is fairly difficult to look at the top of your head? :-)

Simon

>
> tom
>
>
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Re: [OSM-talk] GPS Watch

[Tom Pfeifer]

I'm always wondering why people would wear a GNSS logger on the wrist, where the 70% water mass of 
the wearer's body is always shielding half of the satellites.


On top of the head would be a much better position for the receiver, at least for the antenna, thus 
I wonder why there are so many GNSS watches, and no GNSS hats?


tom


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Re: [OSM-talk] GPS Watch

[Mike Thompson]

Craig,

Thanks, very helpful, especially the info about the FIT format.

Mike

On Sat, Dec 23, 2017 at 10:33 AM, Craig Wallace 
wrote:

> On 2017-12-22 18:48, Mike Thompson wrote:
>
>> I am looking at getting a GPS Watch. Does anyone have any advice?  My
>> primary concerns:
>> 1) Ease of getting GPX tracks out of the watch so they can be uploaded to
>> OSM. Seems like a lot of the devices require you to first upload the track
>> to their proprietary site from where you can download the GPX... sounds
>> like a hassle.
>> 2) Positional accuracy
>> 3) Recording fidelity (e.g. once per second, once per five seconds, etc).
>> 4) Battery life. Ideally > 10 hours on a single charge while recording
>> tracks.
>>
>
> You could look at a Garmin Forerunner. Probably the most popular GPS
> running watches.
> Most of the newer models record tracks in FIT format, and work as a USB
> mass storage device. So you can just plug it into your computer, then copy
> the files off.
> There are a few options for converting from FIT to GPX. eg GPSBabel works,
> or Garmin Basecamp. You don't need to upload to any website. Some more
> advice here: https://wiki.openstreetmap.org/wiki/FIT
>
> Accuracy is usually not bad for the newer models. Though can sometimes be
> a bit out, especially under trees. Not too surprising for such a small GPS
> receiver, and swinging your arms about etc.
>
> Recording rate depends on the model, most of the cheaper models only have
> "smart recording". This usually gives 1 point per 5 seconds or 10 seconds
> or so. Though it should record more points where needed, ie a twisty path.
> The higher end models can record 1 point per second.
>
> Battery life again depends on the model. Some of the cheaper ones are only
> about 8 hours, or up to 15 or 20 hours on others. Especially if you disable
> extra features, eg heart rate or Bluetooth. Some of them have "UltraTrac"
> mode, which gives longer battery life, but a less detailed track.
>
> Or another option is the Garmin Foretrex 601. It is much bulkier and
> heavier than most watches, maybe a bit too big to wear on your wrist. But
> OK if you attach it to a rucksack strap. It has much better battery life -
> it claims 48 hours. It uses AAA batteries, so you can carry spares if
> necessary. And probably more accurate - should be a bigger antenna, and it
> can use GPS, GLONASS and Galileo.
>
> Craig
>
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Re: [OSM-talk] GPS Watch

[Craig Wallace]

On 2017-12-22 18:48, Mike Thompson wrote:
I am looking at getting a GPS Watch. Does anyone have any advice?  My 
primary concerns:
1) Ease of getting GPX tracks out of the watch so they can be uploaded 
to OSM. Seems like a lot of the devices require you to first upload 
the track to their proprietary site from where you can download the 
GPX... sounds like a hassle.

2) Positional accuracy
3) Recording fidelity (e.g. once per second, once per five seconds, etc).
4) Battery life. Ideally > 10 hours on a single charge while recording 
tracks.


You could look at a Garmin Forerunner. Probably the most popular GPS 
running watches.
Most of the newer models record tracks in FIT format, and work as a USB 
mass storage device. So you can just plug it into your computer, then 
copy the files off.
There are a few options for converting from FIT to GPX. eg GPSBabel 
works, or Garmin Basecamp. You don't need to upload to any website. Some 
more advice here: https://wiki.openstreetmap.org/wiki/FIT


Accuracy is usually not bad for the newer models. Though can sometimes 
be a bit out, especially under trees. Not too surprising for such a 
small GPS receiver, and swinging your arms about etc.


Recording rate depends on the model, most of the cheaper models only 
have "smart recording". This usually gives 1 point per 5 seconds or 10 
seconds or so. Though it should record more points where needed, ie a 
twisty path. The higher end models can record 1 point per second.


Battery life again depends on the model. Some of the cheaper ones are 
only about 8 hours, or up to 15 or 20 hours on others. Especially if you 
disable extra features, eg heart rate or Bluetooth. Some of them have 
"UltraTrac" mode, which gives longer battery life, but a less detailed 
track.


Or another option is the Garmin Foretrex 601. It is much bulkier and 
heavier than most watches, maybe a bit too big to wear on your wrist. 
But OK if you attach it to a rucksack strap. It has much better battery 
life - it claims 48 hours. It uses AAA batteries, so you can carry 
spares if necessary. And probably more accurate - should be a bigger 
antenna, and it can use GPS, GLONASS and Galileo.


Craig

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[OSM-talk] GPS Watch

[Mike Thompson]

I am looking at getting a GPS Watch. Does anyone have any advice?  My
primary concerns:
1) Ease of getting GPX tracks out of the watch so they can be uploaded to
OSM. Seems like a lot of the devices require you to first upload the track
to their proprietary site from where you can download the GPX... sounds
like a hassle.
2) Positional accuracy
3) Recording fidelity (e.g. once per second, once per five seconds, etc).
4) Battery life. Ideally > 10 hours on a single charge while recording
tracks.

Thanks,

Mike
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