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    doodle labs and joystick setup

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    • Jetson NanoJ
      Jetson Nano @Jetson Nano
      last edited by

      @Eric-Katzfey could you please help me out here

      Eric KatzfeyE 2 Replies Last reply Reply Quote 0
      • Eric KatzfeyE
        Eric Katzfey ModalAI Team @Jetson Nano
        last edited by Eric Katzfey

        @Jetson-Nano Let's try to walk through this and see where it is going wrong. Please provide answers to all of the following questions. Go to the joystick tab in QGC and press the button on the joystick that you want to use for turtle mode. Which number lights up when you press the button? Next, go to the MAVLink console and provide the output of these commands: ver all, listener manual_control_setpoint, param show VOXL_ESC_MODE, param show VOXL_ESC_T_ON, and param show COM_RC_IN_MODE. If VOXL_ESC_T_ON is not set to the number of the button you just discovered on the joystick tab then change it to the value you want. For example, by default VOXL_ESC_T_ON is set to 9. If you want to use button 10 instead then do param set VOXL_ESC_T_ON 10. If you had to change that parameter then reboot and verify that it is now set correctly. You should see the aux1 value in manual_control_setpoint change from 0.0 to 1.0 when you press the button that you have chosen. Can you verify that you are seeing that?

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        • Eric KatzfeyE
          Eric Katzfey ModalAI Team @Jetson Nano
          last edited by

          @Jetson-Nano If all that seems to be working then press the turtle button and arm (with drone right side up, not upside down) and verify that with turtle mode enabled the propellers are spinning in the opposite direction and the drone won't lift off. Of course, you must be extremely careful when running this test!!! Make sure that the drone is in a location where it cannot cause damage or injure someone if it goes out of control. It would be best to completely remove the propellers and just verify that the motors are spinning in the opposite direction of normal flight.

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

            @Eric-Katzfey
            I followed the steps you suggested, i am attaching the Screenshots. I tried what you suggested the result is still the same, I am not able to arm the system. I tried with various options for VOXL_ESC_MODE, still the same.

            Screenshot from 2025-08-14 14-29-56.png

            I clicked the assigned button here, AUX 1 values are changing but only when i keep the voxl_ESC_MODE to UART passthorugh

            Screenshot from 2025-08-14 14-30-08.png

            Screenshot from 2025-08-14 14-19-46.png

            Screenshot from 2025-08-14 14-19-43.png

            Screenshot from 2025-08-14 14-36-35.png

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

              @Jetson-Nano Here are the steps I am using for testing. Here are my VOXL_ESC parameters:
              6d7b7752-038a-4078-8455-ce8b3f4e46dc-image.png
              My VOXL_ESC_BAUD is set non-standard because I am using an ESC simulator. I have flight mode set to altitude mode. If I check the ESC commands I see no output:
              c4703501-1b3d-4d39-aeec-43e3e5cf3c10-image.png
              Then I arm and check ESC commands and see values:
              ecde7a30-8903-4116-819c-abd998b4d8b1-image.png
              Then I disarm, press button 9, arm, move both sticks around and see these ESC commands:
              c0b19cce-bed1-4358-96c8-87595e4dd924-image.png
              Notice that most motors are 0 except for 1 or 2 and are of opposite sign than normal. In this case pitch was centered and roll was full right. Hope this helps.

              Jetson NanoJ 2 Replies Last reply Reply Quote 0
              • Jetson NanoJ
                Jetson Nano @Eric Katzfey
                last edited by

                @Eric-Katzfey
                Thank you for reverting back, I will check these out and get back to you. Also I will flash the FC once more and see if I have any luck.
                I would like to know which is the version of PX4 you are using.

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

                  @Jetson-Nano I was using v1.14.0-8.106.1

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                  • Jetson NanoJ
                    Jetson Nano @Eric Katzfey
                    last edited by

                    Hey @Eric-Katzfey ,
                    sorry for the late reply, I tested it out by keeping the drone straight and enabling turtle mode, it is working. I should also press both the turtle mode button and arm button together to get it working.
                    The major issue still is there, When i try to arm the system by keeping it facing down or in an angle, the drone is not accepting the command and is not arming.
                    I am attaching screenshot for your reference.
                    Please help me out here. I am using the px4 firmware version 1.14.0 dev 8.104.4
                    Since it is working when I keep it straight and arm, I feel there is something wrong in the logic somewhere or in the parameters.

                    Screenshot from 2025-08-22 12-00-46.png

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

                      @Jetson-Nano I'm sure it is related to your parameter settings. Take a look at our parameter settings for FPV drones and compare against what you are using: https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-px4-params/-/blob/dev/params/v1.14/platforms/D0008_v5.params?ref_type=heads

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

                        @Eric-Katzfey Thank you for reverting back, I am able to get the turtle mode working now, The error was due to the safety parameters, once i changed it to the FPV setup, it was working.

                        Once again thank you for the support. It was really helpful.

                        1 Reply Last reply Reply Quote 0
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