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The main issue with Micheles project is that 400 Euro is probably a
bit outside the typical budget for a GPS logger (you also have to
add in costs for a reasonable antenna, so it is probably more around
450€ in real life). Did he indicate what kind of volume his price
calculations are based on? I've been eyeing getting the receiver
only USB-stick<br>
<a class="moz-txt-link-freetext" href="https://www.optimalsystem.de/os.aspx?x=45">https://www.optimalsystem.de/os.aspx?x=45</a> for experimenting.<br>
<br>
Simon<br>
<br>
Am 20.04.2012 19:01, schrieb Ab_fab:
<blockquote
cite="mid:CADik2OPXcexofjXO0Ku+fvYoRX0bVaR_NYojk0y4rnWC=LYbpA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi all,
<div><br>
</div>
<div>I've been in touch with Michele Bavaro, who runs One Talent
GNSS [1].</div>
<div>He has developped a clever (in my opinion) solution for
precise logging. </div>
<div>It includes :</div>
<div><br>
</div>
<div>
<div style="">- U-blox Neo-6 GPS chip (6T or 6P)</div>
<div style="">- a polymer lithium pack with approximately 4
hours of battery life</div>
<div style="">- uSD card</div>
<div style="">- USB for recharging and other useful things</div>
<div style="">- MCX connector with selectable 3.3V or 12V DC
output for GPS antenna</div>
<div style="">- Bluetooth connection</div>
<div style="">- Price is 400 € </div>
</div>
<div><br>
</div>
<div>BT allows for configuration / control from a device such as
a smartphone. Therefore, no display is required on the logger
itself.</div>
<div>The mIt can be easily charged in a car, thanks to the USB
connector</div>
<div><br>
</div>
<div>Device is not detailed so far on his website, fur I'm sure
he can provide information.</div>
<div>If you're comfortable with German, usefull information on
similar device (GPS chip in particular) can be found on Kowoma
forum [2]</div>
<div><br>
</div>
<div>Michele is keen to adjust the hardware if necessary and he
promotes the use of OpenSource software, such as RTKlib (which
I think he's porting to Android)</div>
<div><br>
</div>
<div>Hope it helps</div>
<div><br>
</div>
<div>[1] <a moz-do-not-send="true"
href="http://www.onetalent-gnss.com/">http://www.onetalent-gnss.com/</a> <br>
[2]
<a moz-do-not-send="true"
href="http://www.kowoma.de/gpsforum/viewtopic.php?f=3&t=3247">http://www.kowoma.de/gpsforum/viewtopic.php?f=3&t=3247</a> <br>
<br>
<div class="gmail_quote">2012/4/20 datendelphin <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:mailinglist@osm.datendelphin.net">mailinglist@osm.datendelphin.net</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On 16/04/12 20:26, Mitja Kleider wrote:<br>
> Hello,<br>
><br>
> I have a few questions regarding outdoor GPS
devices:<br>
><br>
> * Are you satisfied with the available devices?
What would you change first?<br>
> * If there was a device with open source firmware,
would that be an<br>
> important feature?<br>
</div>
I have mostly one concern with available GPS loggers: the
varying<br>
accuracy. We don't need the 2-3cm accuracy of a surveyors
GPS, but a<br>
little bit more would be helpful. So the two important
features would be<br>
<br>
- Show reliably how accurate the position is. Unlike a
navigational<br>
GPS, it's of not much use to have quickly a fix which is
100m away. High<br>
sensitivity brings multipath reception which can make a
track useless<br>
for mapping. In other words: a mode which only uses a
reliable fix.<br>
<br>
- differential GPS. If you want to record some details,
positioning a<br>
gps on a known point can give a huge increase in accuracy.
This feature<br>
would not be that hard to implement, and I am sure some
technical<br>
university would gladly make a project out of it, if we
could get access<br>
to the internal measurements of the chip set and not only
the fully<br>
processed NMEA data.<br>
<span class="HOEnZb"><font color="#888888"><br>
Datendelphin<br>
</font></span>
<div class="HOEnZb">
<div class="h5"><br>
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</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<a moz-do-not-send="true"
href="http://wiki.openstreetmap.org/wiki/User:Ab_fab"
target="_blank">ab_fab</a><br>
"Il n'y a pas de pas perdus"<br>
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