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2nd GPS Pixhawk

Posted by Duffy on August 7, 2014 at 10:57am

Is it possible to add a second GPS to the pixhawk?

Only the CAN port can support the 5 pin cable

 Thanks

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Replies

  • John Hutchison August 13, 2014 at 9:16pm

    I am on AP 3.0.3, MP 1.3.7.4, and have two GPS hooked up, both set to type 1 and can see hdop, sat in view, etc for both in status. Wasn't there an option to enable that would allow failover for the dual GPS modules, because I thought it was there last week but can't find it now that I just installed the second module. Or am I mistaken and failover is a default function?

    BTW (sidenote), this G2M1 module that I got for free from NavSpark here is performing better than my 3DR Lea-6H on the bench in both hdop and sat in view, and it is currently configured for GP only.

    • Robert Hoermann > John Hutchison September 8, 2014 at 3:25am

      Hi,

      I do not know if this question was already anwered, could'nd find something on this.

      What is with the second magnetometer in the other GPS?

      Can this probably also be used as a backup in some of the sockets...e.g "can"

      And by the way...what can the second telemetry socket be used for in a practical application.

      Thanx for a short reply.

      Robert

      • iskess > Robert Hoermann September 8, 2014 at 11:47am
        There is no code to support a 2nd external magnometer. Only 1 external and 1 internal. There is no reason why code couldn't allow for a 2nd external mag through I2C, but I think most agree that the internal will suffice in the unlikely event of a primary mag failure.
        The second Telem port is most often used for the OSD.
        • Developer
          Andrew Tridgell > iskess September 8, 2014 at 3:33pm

          Hi Iskess,

          There is no reason why code couldn't allow for a 2nd external mag through I2C

          The reason we don't support a 2nd external mag is that the mag chips we use (HMC5883) come on a fixed I2C address. You can only have one device with a specific I2C address on a bus. We would either need a 2nd external I2C bus, or a different magnetometer chip which uses a different I2C address to support a 2nd external mag.

          Cheers, Tridge

          • iskess > Andrew Tridgell September 8, 2014 at 3:39pm
            Thanks for explaining Tridge.
            • Robert Hoermann > iskess September 9, 2014 at 1:05am

              Hello Tearig, Iskess, Andrew,

              Great, thank you all for your explenations, good to know.

              Have a great day, Robert

      • F. C. Bearsch > Robert Hoermann September 8, 2014 at 4:45am

        Second GPS can be used at the same time to help with precision, not sure how it is configured however this can be on the base station also and the result is a very dialed in position system

        I use it for a OSD, could be a telemetry back to the radio also via a teensy setup, basically anything that can benifit from the streamed mav data from the craft

  • Duffy August 13, 2014 at 12:53pm

    Hi,

     So, the GPS_TYPE2 is not available as a parameter in V3.1.5, is it possible to activate this?

     Thanks

    • Admin
      Thomas J Coyle III > Duffy August 13, 2014 at 1:44pm

      @Duffy,

      The dual GPS configuration is available in the ArduRover2 v2.46 beta, however it sounds like it might be only available in ArduCopter beta versions.

      Regards,

      TCIII ArduRover2 Developer

  • F. C. Bearsch August 7, 2014 at 8:03pm

    I remeber hearing about this during a interview with someone from 3dr... Can a second GPS on the ground be also used? I think during the interview they said yes, thinking the accuracy on the ground could aid in the location awarness of the craft

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