GPS Problem

Posted by David Ardis on December 22, 2011 at 11:19am

I have an Ardupilot mega with a Locosys GPS module. I have have gone through all the steps in Chris Anderson's tutorial setting the GPS to a baudrate of 38400 and all working in realterminal.

 

I am unable to get the GPS to work with Ardupilot Mega. I have checked the output from the Terminal in the mission planning software and all i get is garbage. Has anyone any suggestions

 

David Ardis

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Replies

  • David Ardis December 24, 2011 at 9:04am

    I got the module working.

    Basically the module is running too fast. I changed the following line in the tutorial

    $PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*28 I changed it to

    $PMTK314,0,5,5,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*28

    Hope this is useful to someone

    David Ardis

     

  • 3D Robotics
    Chris Anderson December 22, 2011 at 11:34am

    I don't think anyone has a tried a Locosys for a few years. (That tutorial was for the legacy ArduPilot, now discontinued.) 

    APM should support most GPS modules in NMEA mode, however (although it's slow and inefficient).  You should be able to test if your module is in the right mode with the GPS_NMEA_test code in the Libraries/AP_GPS/Examples folder 

    The output in the MP terminal is binary MAVlink. It's not supposed to be human readable. 

    Nor sure I can offer any help beyond that. I don't even have one of those modules anymore.

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