[HOT] Recommendations for cheap "passive GPS trackers" / vehicle mountable GPS loggers?

Boris Cornet borisC at osm-at.org
Tue Feb 21 12:29:42 GMT 2012


Today (Tuesday, February 21, 2012) at 07:18 Guttorm Flatabø chipped in:
>> On Mon, Feb 13, 2012 at 8:12 PM, Jaakko Helleranta.com <jaakko at helleranta.com> wrote:
>>    Could someone recommend essentially GPS logger solutions that

> Some time ago I bought the cheapest logger available on Dealextreme:
> http://www.dealextreme.com/p/usb-gps-rechargeable-65-channel-data-logger-dongle-black-58695
>    at 26 USD worldwide, incl. shipping.

> The advantage of the one on Dealextreme is the price. Apart from
> that, there's not much that can go wrong I suppose. But as for
> accuracy it is probably not among the best.

It's really cheap. However, my experiences with cheap devices is, that
you can't rely on their results. One day, you get a good recording,
and the other day you get complete crap. They use cheap chipsets,
and - what's worse - cheap antennas.
If satellite positions or sky view is suboptimal, they start recording
fantasy-coordinates. And you cannot tell the difference (you cross a
mountain, one one side the track is accurate, on the other side it has
up to a few hundred meters offset).

Of course also devices are sometimes inaccurate, if conditions are
bad. But they still return useful data. 

I recommend to use cheap devices only if you plan mass usage, so that
you'll get at least three (better five) tracks for each road.
Otherwise, please invest in quality!

Bye Bye,

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