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VOXL ESC FPV queries

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  • Jetson NanoJ Jetson Nano

    @tom As per your response on shifting to voxl-inspect-mavlink mavlink_offboard, I see that even in mavlink server documentation from ModalAI that service pipeline is not listed. Is it that something that has to be explicitly be enabled somewhere?
    Even as per the documentation, I dont see this service pipeline listed.

    0abeaffd-4404-446e-9b9b-a1c2ab30b668-image.png

    tomT Offline
    tomT Offline
    tom
    admin
    wrote on last edited by
    #23

    @Jetson-Nano I could have the naming wrong. If you inspect mavlink_onboard what kind of data do you see?

    Jetson NanoJ 1 Reply Last reply
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    • tomT tom

      @Jetson-Nano I could have the naming wrong. If you inspect mavlink_onboard what kind of data do you see?

      Jetson NanoJ Offline
      Jetson NanoJ Offline
      Jetson Nano
      Veteran
      wrote on last edited by
      #24

      @tom This is the output I get,

      Screenshot from 2025-01-16 20-49-20.png

      tomT 1 Reply Last reply
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      • Jetson NanoJ Jetson Nano

        @tom This is the output I get,

        Screenshot from 2025-01-16 20-49-20.png

        tomT Offline
        tomT Offline
        tom
        admin
        wrote on last edited by
        #25

        @Jetson-Nano Since you don't have voxl-px4 running I think that data is likely coming from your external flight controller

        Jetson NanoJ 1 Reply Last reply
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        • tomT tom

          @Jetson-Nano Since you don't have voxl-px4 running I think that data is likely coming from your external flight controller

          Jetson NanoJ Offline
          Jetson NanoJ Offline
          Jetson Nano
          Veteran
          wrote on last edited by
          #26

          @tom yes, the message is coming from external flight controller, Flight core v2. Now can you share how to double check if the RC message is set up to forward to voxl-mavlink-server from Flight Core (if not, how to enable it) and how to actually read that message?

          Eric KatzfeyE 1 Reply Last reply
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          • Jetson NanoJ Jetson Nano

            @tom yes, the message is coming from external flight controller, Flight core v2. Now can you share how to double check if the RC message is set up to forward to voxl-mavlink-server from Flight Core (if not, how to enable it) and how to actually read that message?

            Eric KatzfeyE Offline
            Eric KatzfeyE Offline
            Eric Katzfey
            ModalAI Team
            wrote on last edited by
            #27

            @Jetson-Nano Probably should also look at the pipe for messages from the flight controller to the GCS (Labeled mavlink_to_gcs in the above diagram but you'll have to double check that name). Generally the flight controller is configured with two mavlink streams. One is the onboard stream that has high rate messages and is intended for local use (e.g. on VOXL or VOXL 2) and the other is more the default settings for communication with a GCS. You can configure what each of these streams contain in PX4. You can add streams, change stream rates, etc. all via PX4 configuration. Please refer to the PX4 documentation for details on how to do this.

            Jetson NanoJ 1 Reply Last reply
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            • Eric KatzfeyE Eric Katzfey

              @Jetson-Nano Probably should also look at the pipe for messages from the flight controller to the GCS (Labeled mavlink_to_gcs in the above diagram but you'll have to double check that name). Generally the flight controller is configured with two mavlink streams. One is the onboard stream that has high rate messages and is intended for local use (e.g. on VOXL or VOXL 2) and the other is more the default settings for communication with a GCS. You can configure what each of these streams contain in PX4. You can add streams, change stream rates, etc. all via PX4 configuration. Please refer to the PX4 documentation for details on how to do this.

              Jetson NanoJ Offline
              Jetson NanoJ Offline
              Jetson Nano
              Veteran
              wrote on last edited by
              #28

              Hi @Eric-Katzfey, I was thinking another approach, where we can use pymavlink to get the RC_channel data. Any inputs to the mentioned approach, is it feasible?

              Eric KatzfeyE 1 Reply Last reply
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              • Jetson NanoJ Jetson Nano

                Hi @Eric-Katzfey, I was thinking another approach, where we can use pymavlink to get the RC_channel data. Any inputs to the mentioned approach, is it feasible?

                Eric KatzfeyE Offline
                Eric KatzfeyE Offline
                Eric Katzfey
                ModalAI Team
                wrote on last edited by
                #29

                @Jetson-Nano Yes, that should work. You should be able to send heartbeats from a Python script using pymavlink and connect to the flight controller via voxl-mavlink-server. Then you should start receiving all the normal messages sent out by the flight controller to the GCS which should include the RC channels message.

                Jetson NanoJ 1 Reply Last reply
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                • Eric KatzfeyE Eric Katzfey

                  @Jetson-Nano Yes, that should work. You should be able to send heartbeats from a Python script using pymavlink and connect to the flight controller via voxl-mavlink-server. Then you should start receiving all the normal messages sent out by the flight controller to the GCS which should include the RC channels message.

                  Jetson NanoJ Offline
                  Jetson NanoJ Offline
                  Jetson Nano
                  Veteran
                  wrote on last edited by Jetson Nano
                  #30
                  This post is deleted!
                  Jetson NanoJ 1 Reply Last reply
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                  • Jetson NanoJ Jetson Nano
                    [[topic:post-is-deleted]]
                    Jetson NanoJ Offline
                    Jetson NanoJ Offline
                    Jetson Nano
                    Veteran
                    wrote on last edited by
                    #31

                    @Alex-Kushleyev can you check the above mentioned approach

                    Alex KushleyevA 1 Reply Last reply
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                    • Jetson NanoJ Jetson Nano

                      @Alex-Kushleyev can you check the above mentioned approach

                      Alex KushleyevA Offline
                      Alex KushleyevA Offline
                      Alex Kushleyev
                      ModalAI Team
                      wrote on last edited by
                      #32

                      @Jetson-Nano , I am sorry, I don't have this hardware set up right now, so I can't actually test what you are trying to do. I will check with the team regarding who can test it.

                      Alex

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