Published March 22nd, 2004 by Jim O'Halloran
GPS for PDA’s
Been doing a bit of digging on GPS receivers for PDA type devices. Without much looking I’ve found a couple of receivers, one from Haicom which is definately availabe in Australia. The other is from TeleType and comes in a few different models.
Also found was a document which describes some of the serial output from a GPS device.
The GPS receiver sends data in a string or sentence. This might look something like this
$GPGLL,5330.12,N,00215.31,W,134531,A
First, there is a NMEA code ($GPGLL), then the latitude, North or South, Longitude, East or West, Time (hhmmss), Data Valid (A), Carriage Return and Line Feed.