Datasheet

If you can get a really long USB cord (or attach a GPS antenna to uFL plug) and stick the GPS out a

window, so its pointing at the sky, eventually the GPS will get a fix and the window data will change

over to transmit valid data like this:

Look for the line that says

$GPRMC,194509.000,A,4042.6142,N,07400.4168,W,2.03,221.11,160412,,,A*77

This line is called the RMC (Recommended Minimum) sentence and has pretty much all of the most

useful data. Each chunk of data is separated by a comma.

The first part 194509.000 is the current time GMT (Greenwich Mean Time). The first two numbers

19 indicate the hour (1900h, otherwise known as 7pm) the next two are the minute, the next two are

the seconds and finally the milliseconds. So the time when this screenshot was taken is 7:45 pm

and 9 seconds. The GPS does not know what time zone you are in, or about "daylight savings" so

you will have to do the calculation to turn GMT into your timezone

The second part is the 'status code', if it is a V that means the data is Void (invalid). If it is an A that

means its Active (the GPS could get a lock/fix)

The next 4 pieces of data are the geolocation data. According to the GPS, my location is

4042.6142,N (Latitude 40 degrees, 42.6142 decimal minutes North) & 07400.4168,W. (Longitude

74 degrees, 0.4168 decimal minutes West) To look at this location in Google maps, type +40°

42.6142', -74° 00.4168' into the google maps search box (http://adafru.it/aMl) . Unfortunately

gmaps requires you to use +/- instead of NSWE notation. N and E are positive, S and W are

negative.

People often get confused because the GPS is working but is "5 miles off" - this is because

they are not parsing the lat/long data correctly. Despite appearances, the geolocation data is

NOT in decimal degrees. It is in degrees and minutes in the following format: Latitude: