[talk-au] Cheap data logger

[John Smith]

> The java app works fine and will even export the data to
> GPX format etc, I just had issues firstly trying to make it
> work without putting it into logging mode, and then running
> the java app with the 64bit java binary.

I just went out to test all 3 devices, they were all mounted within cm of each other with as much of a clear view of sky as the windscreen area permits.

The BT757/Solar GPS logger device seems to be the most accurate and/or sensitive, but has the smallest amount of storage, only 1MByte or 8Mbit as is advertised, should do about 37000 way points.

Then the HTC Dream/G1 which is a mobile phone seems to be the next most accurate/sensitive, but has 8G storage for GPX data.

The least accurate is the GT-730F/L USB dongle, this could be due to the physical size which would limit the antenna size, unlike the BT757 which seems to have a fairly large antenna. I've no idea how big the antenna in the phone is. The GT-730F/L has about 8Mbyte of capacity at a guess.

It's a shame the BT757 has such a small storage capacity, as it has the best accuracy/sensitivity it has a battery that can handle 40+ hours logging on a single charge in combination with the solar panel.

And all three can be used under linux, possibly Mac and of course windows.


      
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