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    VOXL M500 vision problem!!

    VOXL Flight Deck
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    • Chad SweetC
      Chad Sweet ModalAI Team
      last edited by

      Is the tracking camera looking at interesting "features" when it takes off, or is it just white floor? If it can start on a carpet or something, the vision system will have something to track. this will help VIO reduce drift.

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      • Vũ Văn LongV
        Vũ Văn Long
        last edited by

        it just is a whitle floor like this 140399418_1382482975425604_1999387540459859908_n.jpg

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        • Chad SweetC
          Chad Sweet ModalAI Team
          last edited by

          Can you put some pieces of duct tape on the floor or something to make it more interesting to the VIO system? Especially since it looks like that floor might be reflective. Random small pieces of tape, like electrical or duct tape, would likely help.

          You can monitor the VIO stability on QGC. Those numbers should stabilize after takeoff, but obviously you want them stable on the ground too.

          Vũ Văn LongV 1 Reply Last reply Reply Quote 0
          • Vũ Văn LongV
            Vũ Văn Long @Chad Sweet
            last edited by

            hi, here is the video i just captured https://drive.google.com/file/d/1Am63zD09am8nx_BBpAB2JfTYcf_IFMST/view?usp=sharing

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            • Vũ Văn LongV
              Vũ Văn Long
              last edited by

              the local NED position is look good at the init state as well as when i move the drone into the other location.

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              • Chad SweetC
                Chad Sweet ModalAI Team
                last edited by

                thanks for sending, I will pass along to someone more familiar. Was this all working before? Do you know what has changed?

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                • Vũ Văn LongV
                  Vũ Văn Long
                  last edited by

                  last week it used to work normally. i did't changed any strange thing, just re-configuration the drone to the factory state. by "voxl-configure-vision-px4 -f" to take again the NED position cuz before that i had config vision lib by "voxl-configure-modalai-vl" and the local poistion is lost.

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                  • Vũ Văn LongV
                    Vũ Văn Long
                    last edited by

                    pls help me soon. we can set up an online support via teamview to make the problem more clearly.

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                    • James StrawsonJ
                      James Strawson ModalAI Team
                      last edited by

                      Does this behavior only occur in PX4 position mode? Does it fly in PX4 manual mode?

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                      • Vũ Văn LongV
                        Vũ Văn Long @James Strawson
                        last edited by

                        @James-Strawson yes,we only test uav in position mode. we didn't use manual for testing.

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                        • Chad SweetC
                          Chad Sweet ModalAI Team
                          last edited by

                          Please try manual mode. it seems there might be a PX4 parameter mismatch. It would be good to see if the m500 flies properly without VIO.

                          @modaltb Do you have a pointer to the Flight Core factory parmeters?

                          The VIO indoor EKF parameters are here

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                          • modaltbM
                            modaltb ModalAI Team
                            last edited by

                            There's a few files (as we use DRY even on params 😉 The procedure to do this is here

                            When you reload the airframe (via these parameters) you'll end up losing calibration and having to go through the calibration process. This is documented here

                            You'll end up loading these, in this order:

                            • configures core airframe for m500 with 4S battery (standard):
                              https://gitlab.com/voxl-public/flight-core-px4/px4-parameters/-/raw/master/platforms/v1.10/m500_4s_config.params

                            • VIO indoor EKF
                              https://gitlab.com/voxl-public/flight-core-px4/px4-parameters/-/raw/master/helpers/ekf2_indoor_vio.params

                            • Serial params (to be safe, these should be set by default)
                              https://gitlab.com/voxl-public/flight-core-px4/px4-parameters/-/blob/master/helpers/mavlink_serial_ports.params

                            • If needed and applicable, radio
                              https://gitlab.com/voxl-public/flight-core-px4/px4-parameters/-/blob/master/helpers/gimbal_dx8_config.params

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