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  4. Having issues Configuring ROS on VOXL CAM

Having issues Configuring ROS on VOXL CAM

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  • Steve TurnerS Steve Turner

    @Bright-Nnadi

    You need to set your Ubuntu development environment with ROS to point to the ROS Master process on the VOXL.

    Check out: https://answers.ros.org/question/35603/ros_master_uri-change-it-and-save-it/

    So for example if the IP address of the VOXL is 192.168.1.118 then you need to execute export ROS_MASTER_URI=http://192.168.1.118:11311 on the Ubuntu system and then run rviz from the same terminal.

    You then also need to run the MAVROS or MPA ROS Bridge on the VOXL along with the ROS master node.

    Start ros master: roscore

    mavros: https://docs.modalai.com/mavros/

    On the voxl you need to edit the ROS_IP to match your voxl's IP address so that other hosts can connect to it.

    If this doesn't work, consider examining your firewall on your ubuntu system to make sure it isn't block ROS traffic. If it's a vanilla ROS/Ubuntu install you should be fine.

    Bright NnadiB Offline
    Bright NnadiB Offline
    Bright Nnadi
    Contributor
    wrote on last edited by
    #9

    @Steve-Turner I updated the ROS_MASTER_URI but its still saying the same thing and saying it cannot contact ROS master 9d7d2f01-d129-4a8b-b506-ff4ef018423a.jpg

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    0
    • Bright NnadiB Offline
      Bright NnadiB Offline
      Bright Nnadi
      Contributor
      wrote on last edited by
      #10

      Saying the same thing 0f949cb3-ad26-4db0-b6b4-1a0998e38e3d.jpg

      1 Reply Last reply
      0
      • Chad SweetC Offline
        Chad SweetC Offline
        Chad Sweet
        ModalAI Team
        wrote on last edited by
        #11

        Assuming you are trying to run ROS master on your VOXL, first find out what is your VOXL's IP? Let's call that <VOXL IP>

        Then, can you ping that IP from the computer you are trying to run Rviz?

        $ ping <VOXL IP>
        

        If so, on VOXL edit your ROS environment

        export ROS_IP="<VOXL IP>"
        

        Then start ROS on the VOXL. Monitor the output of the ROS master when it launches, you should see the "roscore" IP the same as what you just configured.

        If so, configure the ROS environment on your PC

        What is the IP of your PC on the same network as the VOXL? We'll call that <PC IP>

        Configure the PC's ROS environment as such:

        export ROS_MASTER_URI="http://<VOXL IP>:11311"
        export ROS_IP="<PC IP>"
        

        Then launch RViz

        Note: The instructions above are configuring the master to be the VOXL by pointing both VOXL and the PC to the VOXL's IP address as master. Checkout slides 7,8,9 in the presentation here

        Bright NnadiB KrisK 3 Replies Last reply
        0
        • Chad SweetC Chad Sweet

          Assuming you are trying to run ROS master on your VOXL, first find out what is your VOXL's IP? Let's call that <VOXL IP>

          Then, can you ping that IP from the computer you are trying to run Rviz?

          $ ping <VOXL IP>
          

          If so, on VOXL edit your ROS environment

          export ROS_IP="<VOXL IP>"
          

          Then start ROS on the VOXL. Monitor the output of the ROS master when it launches, you should see the "roscore" IP the same as what you just configured.

          If so, configure the ROS environment on your PC

          What is the IP of your PC on the same network as the VOXL? We'll call that <PC IP>

          Configure the PC's ROS environment as such:

          export ROS_MASTER_URI="http://<VOXL IP>:11311"
          export ROS_IP="<PC IP>"
          

          Then launch RViz

          Note: The instructions above are configuring the master to be the VOXL by pointing both VOXL and the PC to the VOXL's IP address as master. Checkout slides 7,8,9 in the presentation here

          Bright NnadiB Offline
          Bright NnadiB Offline
          Bright Nnadi
          Contributor
          wrote on last edited by
          #12

          @Chad-Sweet thanks Chad, so I got Rviz working now !![0_1660157598192_05B72248-F814-4C2F-947E-4443E4FB94F3.jpeg](Uploading 45%)

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          • Bright NnadiB Offline
            Bright NnadiB Offline
            Bright Nnadi
            Contributor
            wrote on last edited by
            #13

            Is the IP address of my VOXL CAM 192.168.8.1

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            • Chad SweetC Chad Sweet

              Assuming you are trying to run ROS master on your VOXL, first find out what is your VOXL's IP? Let's call that <VOXL IP>

              Then, can you ping that IP from the computer you are trying to run Rviz?

              $ ping <VOXL IP>
              

              If so, on VOXL edit your ROS environment

              export ROS_IP="<VOXL IP>"
              

              Then start ROS on the VOXL. Monitor the output of the ROS master when it launches, you should see the "roscore" IP the same as what you just configured.

              If so, configure the ROS environment on your PC

              What is the IP of your PC on the same network as the VOXL? We'll call that <PC IP>

              Configure the PC's ROS environment as such:

              export ROS_MASTER_URI="http://<VOXL IP>:11311"
              export ROS_IP="<PC IP>"
              

              Then launch RViz

              Note: The instructions above are configuring the master to be the VOXL by pointing both VOXL and the PC to the VOXL's IP address as master. Checkout slides 7,8,9 in the presentation here

              Bright NnadiB Offline
              Bright NnadiB Offline
              Bright Nnadi
              Contributor
              wrote on last edited by
              #14

              @Chad-Sweet I’m connected to the VOXL using Adb not wifi

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              • ? Offline
                ? Offline
                A Former User
                wrote on last edited by
                #15

                ROS uses wifi to communicate, not ADB. You'll need to connect the drone and you computer to the same network in order to use ros. This can either be done by connecting the drone to your home/work network or by setting the drone to serve as an AP. Instructions for either can be found here

                KrisK 2 Replies Last reply
                0
                • Chad SweetC Chad Sweet

                  Assuming you are trying to run ROS master on your VOXL, first find out what is your VOXL's IP? Let's call that <VOXL IP>

                  Then, can you ping that IP from the computer you are trying to run Rviz?

                  $ ping <VOXL IP>
                  

                  If so, on VOXL edit your ROS environment

                  export ROS_IP="<VOXL IP>"
                  

                  Then start ROS on the VOXL. Monitor the output of the ROS master when it launches, you should see the "roscore" IP the same as what you just configured.

                  If so, configure the ROS environment on your PC

                  What is the IP of your PC on the same network as the VOXL? We'll call that <PC IP>

                  Configure the PC's ROS environment as such:

                  export ROS_MASTER_URI="http://<VOXL IP>:11311"
                  export ROS_IP="<PC IP>"
                  

                  Then launch RViz

                  Note: The instructions above are configuring the master to be the VOXL by pointing both VOXL and the PC to the VOXL's IP address as master. Checkout slides 7,8,9 in the presentation here

                  KrisK Offline
                  KrisK Offline
                  Kris
                  Regular
                  wrote on last edited by Kris
                  #16

                  @Chad-Sweet I am also having the same issue. I am not sure what im doing wrong.

                  This is my PC (my_ros_env.sh)
                  PC my_ros_env.sh.png

                  This is my VOXL (my_ros_env.sh)
                  VOXL my_ros_env.sh.png

                  This is what I get when I try to show my voxl-env
                  VOXL env.png

                  Setting up environment variables for ROS is a little confusing for me.

                  I am using wifi to communicate with VOXL.
                  My VOXL IP is the usual 192.168.8.1
                  My PC IP is 192.168.8.78

                  I am stuck here.
                  Could someone please point me in the right direction?

                  KrisK 1 Reply Last reply
                  0
                  • KrisK Kris

                    @Chad-Sweet I am also having the same issue. I am not sure what im doing wrong.

                    This is my PC (my_ros_env.sh)
                    PC my_ros_env.sh.png

                    This is my VOXL (my_ros_env.sh)
                    VOXL my_ros_env.sh.png

                    This is what I get when I try to show my voxl-env
                    VOXL env.png

                    Setting up environment variables for ROS is a little confusing for me.

                    I am using wifi to communicate with VOXL.
                    My VOXL IP is the usual 192.168.8.1
                    My PC IP is 192.168.8.78

                    I am stuck here.
                    Could someone please point me in the right direction?

                    KrisK Offline
                    KrisK Offline
                    Kris
                    Regular
                    wrote on last edited by
                    #17

                    Just wondering why my voxl environments are all blank everytime I try to view them. Should I " export " the values manually?

                    1 Reply Last reply
                    0
                    • ? A Former User

                      ROS uses wifi to communicate, not ADB. You'll need to connect the drone and you computer to the same network in order to use ros. This can either be done by connecting the drone to your home/work network or by setting the drone to serve as an AP. Instructions for either can be found here

                      KrisK Offline
                      KrisK Offline
                      Kris
                      Regular
                      wrote on last edited by
                      #18

                      My Voxl System Image-
                      Voxl System Image Version.png

                      1 Reply Last reply
                      0
                      • ? A Former User

                        ROS uses wifi to communicate, not ADB. You'll need to connect the drone and you computer to the same network in order to use ros. This can either be done by connecting the drone to your home/work network or by setting the drone to serve as an AP. Instructions for either can be found here

                        KrisK Offline
                        KrisK Offline
                        Kris
                        Regular
                        wrote on last edited by
                        #19

                        My current voxl services-
                        Voxl Inspect Services.png

                        1 Reply Last reply
                        0
                        • ? Offline
                          ? Offline
                          A Former User
                          wrote on last edited by
                          #20

                          Hi,

                          It looks like you're on a pretty old release of our software stack (3.3.0-0.5), you should download the latest release (3.8.0-0.7) from our downloads page and we'll be better able to support issues that you're having since there's a good chance we've fixed them in the 10 months since the 0.5 release.

                          KrisK 1 Reply Last reply
                          0
                          • ? A Former User

                            Hi,

                            It looks like you're on a pretty old release of our software stack (3.3.0-0.5), you should download the latest release (3.8.0-0.7) from our downloads page and we'll be better able to support issues that you're having since there's a good chance we've fixed them in the 10 months since the 0.5 release.

                            KrisK Offline
                            KrisK Offline
                            Kris
                            Regular
                            wrote on last edited by
                            #21

                            @Alex-Gardner Thank you for your help 🙂

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