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    Drone losing position / crashing in Offboard mode

    GPS-denied Navigation (VIO)
    2
    35
    2023
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    • Eric KatzfeyE
      Eric Katzfey ModalAI Team @Jetson Nano
      last edited by

      @Jetson-Nano What is figure_eight_move_home set to in your configuration file for voxl-vision-hub (/etc/modalai/voxl-vision-hub.conf)?

      Jetson NanoJ 1 Reply Last reply Reply Quote 0
      • Jetson NanoJ
        Jetson Nano @Eric Katzfey
        last edited by

        @Eric-Katzfey It is set to true.

        Screenshot 2024-06-07 at 12.24.02 PM.png

        I have a starling and have verified the parameter with that system also.

        Eric KatzfeyE 1 Reply Last reply Reply Quote 0
        • Eric KatzfeyE
          Eric Katzfey ModalAI Team @Jetson Nano
          last edited by

          @Jetson-Nano So the figure eight works fine on the Starling? But not on the drone with the Cube Orange using VOXL 2 as a companion computer? What if you takeoff straight up, hover at about 7 or 8 feet altitude, then go into offboard mode. Does it still do the same thing? Is the drone with the Cube Orange much larger than the Starling?

          Jetson NanoJ 1 Reply Last reply Reply Quote 0
          • Jetson NanoJ
            Jetson Nano @Eric Katzfey
            last edited by

            @Eric-Katzfey The test I'll do and let you know, but the drone with cube orange is bigger than Starling and the extrinsics for the drone has been changed with respect to the modified build's CG.

            Jetson NanoJ 1 Reply Last reply Reply Quote 0
            • Jetson NanoJ
              Jetson Nano @Jetson Nano
              last edited by Jetson Nano

              Hey @Eric-Katzfey , I tested it in all directions and the drone is going towards the home, but not to 0,0,1.5 but it's going down to 0,0,0. Wherever I take off and navigate and then switch to offboard, it'll try to go to 0,0,0. I tested it with 1m and 2m altitude and still the same. I also tested it right above the origin, it went straight down.

              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
              • Eric KatzfeyE
                Eric Katzfey ModalAI Team @Jetson Nano
                last edited by

                @Jetson-Nano I'm not sure why it would do that on Cube Orange. It almost seems like it is doing RTL instead of starting the figure eight. The Starling is running our fork of PX4, not standard PX4. You could build our fork and try it on the Cube Orange to see if that makes a difference.

                Jetson NanoJ 1 Reply Last reply Reply Quote 0
                • Jetson NanoJ
                  Jetson Nano @Eric Katzfey
                  last edited by

                  @Eric-Katzfey Can I download the PX4 which is built for VOXL and upload it in Cube?

                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                  • Eric KatzfeyE
                    Eric Katzfey ModalAI Team @Jetson Nano
                    last edited by

                    @Jetson-Nano No, you would need to download the source and build it yourself.

                    Jetson NanoJ 1 Reply Last reply Reply Quote 0
                    • Jetson NanoJ
                      Jetson Nano @Eric Katzfey
                      last edited by

                      @Eric-Katzfey I tried using the modalai forked repo in the cube and this is the outcome, when I switch to offboard it is still going to home but not like crashing how it was previously, but goes near home and hovers very close to the ground, and I get autopilot disengaged and switches to land mode and lands.

                      Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                      • Eric KatzfeyE
                        Eric Katzfey ModalAI Team @Jetson Nano
                        last edited by

                        @Jetson-Nano Interesting. Can you share the log from that flight?

                        Jetson NanoJ 1 Reply Last reply Reply Quote 0
                        • Jetson NanoJ
                          Jetson Nano @Eric Katzfey
                          last edited by

                          Hey @Eric-Katzfey, here are the logs for the flight test.

                          https://review.px4.io/plot_app?log=9b6a7c2c-2bf4-43f7-8182-ac3efe2b4655

                          In this flight test, I set the offboard mode to trajectory and did the flight test

                          https://review.px4.io/plot_app?log=65f0b03a-11a5-409e-b2ca-1fe2a36cc088

                          In this flight test, I changed the offboard mode to figure_eight and still the result is same, it goes very close to ground at 0,0,0 and hovers there.

                          Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                          • Eric KatzfeyE
                            Eric Katzfey ModalAI Team @Jetson Nano
                            last edited by

                            @Jetson-Nano I'm guessing that you don't have an odometry mavlink stream setup so the Cube Orange isn't sending out vehicle odometry mavlink packets that the offboard mode needs.

                            Jetson NanoJ 1 Reply Last reply Reply Quote 0
                            • Jetson NanoJ
                              Jetson Nano @Eric Katzfey
                              last edited by

                              @Eric-Katzfey How do I setup that?

                              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                              • Eric KatzfeyE
                                Eric Katzfey ModalAI Team @Jetson Nano
                                last edited by

                                @Jetson-Nano I would recommend reading through the PX4 documentataion on Mavlink messaging. It discusses how to enable streams. https://docs.px4.io/v1.14/en/middleware/mavlink.html

                                Jetson NanoJ 1 Reply Last reply Reply Quote 0
                                • Jetson NanoJ
                                  Jetson Nano @Eric Katzfey
                                  last edited by

                                  Thank you @Eric-Katzfey , I'll check and get back if needed anything.

                                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                                  • Eric KatzfeyE
                                    Eric Katzfey ModalAI Team @Jetson Nano
                                    last edited by

                                    @Jetson-Nano The command would be something like mavlink stream -r 30 -s ODOMETRY -u 14556 and would be added to one of the startup files.

                                    Jetson NanoJ 1 Reply Last reply Reply Quote 0
                                    • Jetson NanoJ
                                      Jetson Nano @Eric Katzfey
                                      last edited by

                                      @Eric-Katzfey The documentation explains how to send custom mavlink messages, but odometry is not a custom message and isn't it streamed by default in your forked PX4?

                                      Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                                      • Eric KatzfeyE
                                        Eric Katzfey ModalAI Team @Jetson Nano
                                        last edited by

                                        @Jetson-Nano The command is the same regardless of whether the message is custom or not. Another thing you can do is enable some of the debug flags available with voxl-vision-hub to see things like which mavlink messages it is receiving and which mavlink messages it is sending out. There are a variety of flags to choose from and that would help to figure out what is going wrong.

                                        Jetson NanoJ 1 Reply Last reply Reply Quote 0
                                        • Jetson NanoJ
                                          Jetson Nano @Eric Katzfey
                                          last edited by

                                          @Eric-Katzfey This is what I am getting when I run vision hub with debug

                                          voxl_visionion-hub -d
                                          
                                          Enabling recv debugging for localhost UDP port from ROS
                                          loading our own config file
                                          =================================================================
                                          Parameters as loaded from config file:
                                          config_file_version:        1
                                          
                                          MAVROS / MAVSDK
                                          en_localhost_mavlink_udp    0
                                          localhost_udp_port_number:  14551
                                          
                                          VIO
                                          en_vio:                     1
                                          vio_pipe:                   qvio
                                          secondary_vio_pipe:         ov
                                          en_reset_vio_if_initialized_inverted: 1
                                          vio_warmup_s:               3.000000
                                          send_odom_while_failed:     1
                                          
                                          MISC FEATURES
                                          horizon_cal_tolerance:      0.500000
                                          OFFBOARD MODE
                                          offboard_mode:              trajectory
                                          follow_tag_id:              0
                                          figure_eight_move_home:     1
                                          robot_radius:               0.300000
                                          collision_sampling_dt:      0.100000
                                          max_lookahead_distance:     1.000000
                                          FIXED FRAME RELOCALIZATION
                                          en_tag_fixed_frame:         0
                                          fixed_frame_filter_len:     5
                                          en_transform_mavlink_pos_setpoints_from_fixed_frame:0
                                          
                                          COLLISION PREVENTION (VOA)
                                          en_voa:                     1
                                          voa_upper_bound_m:          -0.150000
                                          voa_lower_bound_m:          0.150000
                                          voa_memory_s:               1.000000
                                          voa_max_pc_per_fusion:      100
                                          voa_pie_min_dist_m:         0.250000
                                          voa_pie_max_dist_m:         20.000000
                                          voa_pie_under_trim_m:       1.000000
                                          voa_pie_threshold:          3
                                          voa_pie_slices:             36
                                          voa_pie_bin_depth_m:        0.150000
                                          voa_send_rate_hz:           20.000000
                                          
                                          voa_input #0
                                              enabled:            1
                                              type:               point_cloud
                                              input_pipe:         dfs_point_cloud
                                              frame:              stereo_l
                                              max_depth:          8.000000
                                              min_depth:          0.300000
                                              cell_size:          0.080000
                                              threshold:          4
                                              x_fov_deg:          68.000000
                                              y_fov_deg:          56.000000
                                              conf_cutoff:        0
                                          voa_input #1
                                              enabled:            1
                                              type:               point_cloud
                                              input_pipe:         stereo_front_pc
                                              frame:              stereo_front_l
                                              max_depth:          8.000000
                                              min_depth:          0.300000
                                              cell_size:          0.080000
                                              threshold:          4
                                              x_fov_deg:          68.000000
                                              y_fov_deg:          56.000000
                                              conf_cutoff:        0
                                          voa_input #2
                                              enabled:            1
                                              type:               point_cloud
                                              input_pipe:         stereo_rear_pc
                                              frame:              stereo_rear_l
                                              max_depth:          8.000000
                                              min_depth:          0.300000
                                              cell_size:          0.080000
                                              threshold:          4
                                              x_fov_deg:          68.000000
                                              y_fov_deg:          56.000000
                                              conf_cutoff:        0
                                          voa_input #3
                                              enabled:            1
                                              type:               tof
                                              input_pipe:         tof
                                              frame:              tof
                                              max_depth:          6.000000
                                              min_depth:          0.150000
                                              cell_size:          0.080000
                                              threshold:          3
                                              x_fov_deg:          106.500000
                                              y_fov_deg:          85.099998
                                              conf_cutoff:        125
                                          voa_input #4
                                              enabled:            1
                                              type:               rangefinder
                                              input_pipe:         rangefinders
                                              frame:              body
                                              max_depth:          8.000000
                                              min_depth:          0.300000
                                              cell_size:          0.080000
                                              threshold:          4
                                              x_fov_deg:          68.000000
                                              y_fov_deg:          56.000000
                                              conf_cutoff:        0
                                          =================================================================
                                          loading extrinsics config file
                                          loading horizon cal file
                                          existing instance of voxl-vision-hub found, attempting to stop it
                                          starting geometry module
                                          starting autopilot monitor
                                          starting mavlink IO
                                          Waiting to connect to voxl-mavlink-server
                                          Connected to voxl-mavlink-server
                                          starting fixed pose input
                                          starting vio manager
                                          Connected to VIO pipe: qvio
                                          Geometry module updating to use imu: imu_apps for VIO
                                          new T imu wrt body:
                                           0.0907  -0.0060  -0.0295  
                                          new R imu to body:
                                           1.0000  -0.0000   0.0000  
                                           0.0000   1.0000  -0.0000  
                                           0.0000   0.0000   1.0000  
                                          done updating transforms to use imu: imu_apps
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          Detected Autopilot Mavlink SYSID 1
                                          starting tag manager
                                          starting voa manager
                                          starting horizon cal module
                                          Connected to VOA input pipe: tof
                                          starting offboard trajectory
                                          Init complete
                                          Trajectory Monitor connected to voa pointcloud
                                          from AP msgid:   0 sysid:  1 compid:  1
                                          requesting autopilot_version
                                          from AP msgid: 148 sysid:  1 compid:  1
                                          Detected autopilot version: 1.14.0
                                          from AP msgid:  77 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
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                                          from AP msgid: 12901 sysid:  1 compid:  1
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                                          from AP msgid:   0 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
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                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
                                          from AP msgid: 141 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid: 245 sysid:  1 compid:  1
                                          from AP msgid:  32 sysid:  1 compid:  1
                                          from AP msgid: 12901 sysid:  1 compid:  1
                                          from AP msgid:  85 sysid:  1 compid:  1
                                          from AP msgid:  29 sysid:  1 compid:  1
                                          from AP msgid:  36 sysid:  1 compid:  1
                                          from AP msgid:   1 sysid:  1 compid:  1
                                          from AP msgid: 380 sysid:  1 compid:  1
                                          from AP msgid:   8 sysid:  1 compid:  1
                                          from AP msgid:  74 sysid:  1 compid:  1
                                          from AP msgid:  83 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  42 sysid:  1 compid:  1
                                          from AP msgid:   0 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid: 147 sysid:  1 compid:  1
                                          from AP msgid: 230 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  74 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  74 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  83 sysid:  1 compid:  1
                                          from AP msgid:  85 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  42 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:   0 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  74 sysid:  1 compid:  1
                                          from AP msgid: 411 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 410 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid: 253 sysid:  1 compid:  1
                                          from AP msgid: 141 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid: 245 sysid:  1 compid:  1
                                          from AP msgid:  32 sysid:  1 compid:  1
                                          from AP msgid: 12901 sysid:  1 compid:  1
                                          from AP msgid:  29 sysid:  1 compid:  1
                                          from AP msgid:  36 sysid:  1 compid:  1
                                          from AP msgid:   1 sysid:  1 compid:  1
                                          from AP msgid: 380 sysid:  1 compid:  1
                                          from AP msgid:   8 sysid:  1 compid:  1
                                          from AP msgid:  74 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:  83 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  42 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          from AP msgid:   0 sysid:  1 compid:  1
                                          from AP msgid:  31 sysid:  1 compid:  1
                                          from AP msgid:  30 sysid:  1 compid:  1
                                          
                                          
                                          Jetson NanoJ 1 Reply Last reply Reply Quote 0
                                          • Jetson NanoJ
                                            Jetson Nano @Jetson Nano
                                            last edited by Jetson Nano

                                            @Eric-Katzfey when I do

                                            voxl-inspect-mavlink mavlink_onboard
                                            

                                            I am getting

                                            98df2a0c-9b4a-4257-b1a0-6ca7bc250b33-image.png

                                            and in mavlink console when I stream Odometry message as you said I am getting no output

                                            430e0c62-e971-4d5f-983f-7861e3678120-image.png

                                            when I used -d instead of -u it shows device not running. I tried with different ports

                                            Jetson NanoJ 1 Reply Last reply Reply Quote 0
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