Tony Blews

For some time now I’ve been toying with the idea of buying a GPS logger, for no other reason than that I like gadgets. However, as I’m tight fisted, paying £50 for one from Maplin is out of the question.

So, how cheaply can I bodge one together?

Well, using a my long suffering Skypephone and a Bluenext BN-906GR (£25.44 incl VAT and P&P from BlueUnplugged.com), I think I’ve cracked it.

Software wise, I’m running TrekBuddy on the phone, which needs some fiddling with to get working. I’m using v0.9.83 (download link), and this is what I did:

Firstly, download TrekBuddy from that link above, and copy it across to your phone. You might as well do this by plugging the phone in via the USB connector and using it as a mass storage device, as you’re now going to have to create some directories.

On the phone, create the directory TrekBuddy, and in that directory create some more called:maps, resources, sounds, tracks-gpx, tracks-nmea, ui-profiles and wpts.

Now, go and get a map. I’ve been using GM2TB to get google maps. If you go for a map of the whole country then you’ll not be able to see your location very well, so I’ve just grabbed a map of the Stafford area. I’f I go somewhere else, I’ll make a map of that area first.

Anyway, get your map from GM2TB, and save the .tar file in your TrekBuddy/maps directory.

Now install the trekbuddy.jar file, and run the application. It won’t work properly.

Enter Settings, then Basic. Change the name of the default map to file:///Memory%20card/TrekBuddy/maps/stafford.tar (assuming, of course that your map file was called stafford.tar), and change the Data Dir to file:///Memory%20card/TrekBuddy/

Now save the settings, exit the application.

Pair your GPS reciever with your phone as per the makers instructions.

Now start TrekBuddy again and go through the menus to start a tracklog. All should be good.

To view you track in Google Earth, you’ll need to copy the .gpx files on to your PC (either by using the phone as a USB memory device or by Bluetooth), and convert them using something like Routeconverter.

Then hey presto, you can see where you’ve roughly been. I say roughly because despite a claimed accuracy of 2.5m, a test track of me walking home from work shows me walking down the middle of the River Sow for 100 yards.