Sending data TO gps

Projects Networking, Protocols, and Devices
1

I have one of those cheap GPS modules (SkyLab SKM53). I have hooked it up to a USB to serial module and was able to read the data stream from the module to my computer at 9600 baud.

The documentation that I was able to find for the module said "The modules default baud rate is set up 9600bps."
It also has a table of messages:

NMEA Record Description Default
GGA Global positioning system fixed data Y
GLL Geographic position—latitude/longitude N
GSA GNSS DOP and active satellites Y
GSV GNSS satellites in view Y
RMC Recommended minimum specific GNSS data Y
VTG Course over ground and ground speed N
ZDA Date and Time N
DTM Datum reference N

The messages "GLL", "VTG", "ZDA" and "DTM" all have a default setting of "N".

The documentation seems to imply that the baud rate can be changed and that there are four message that are not sent by default but could be sent. Also, it is possible to turn off message that are sent by default.

Does anyone have documentation on the commands that can be sent to this or other GPS modules?

2

I am surprised that with all the knowledge on this forum that I did not get a single response.

I can only assume that there was something wrong with my original post. Perhaps I left out some important piece of information. Perhaps I was not clear what I wished to learn.

Could someone please let me know what I can do to improve my posting?

3

You can talk to your GPS module using NEMA Commands

For my Fastrax UP501 all sentences start with $PMTK
$PMTK251,3840027 will set baud rate @38400
$PMTK300,1000,0,0,0,01C will set fix interval
$PMTK314 ... will select message to be sent (GGL, RMC, GGA...)

Not sure this protocol is valid for your specific GPS module

4

Could someone please let me know what I can do to improve my posting?

Perhaps post links to your "cheap GPS modules (SkyLab SKM53)". Have you contacted Skylab or the place you purchased the GPS from for more info?

5

zoomkat:
Perhaps post links ...

Any ebay search of "SKM53"
(http://www.ebay.com/itm/Skylab-GPS-Module-MT3329-SKM53-with-Embedded-GPS-Antenna-Arduino-Compatible-l-/281108831892?pt=LH_DefaultDomain_0&hash=item4173645e94)

http://file01.up71.com/File/CorpDownFile/2013/05/30/0_skylab_20130530201851.pdf

Perhaps this better identifies the GPS I am using.

6

Found the link to the Fastrax NEMA commands, here it is