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  4. rx-tx from v2 to voxl

rx-tx from v2 to voxl

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  • jconkJ Offline
    jconkJ Offline
    jconk
    wrote on last edited by
    #1

    Hello
    I followed the wire details for core v2 to voxl
    There was some confusion because I didn't want to remove and disassemble the voxl-cam to see the wire and connection so I just used the ver1 detals and transposed them to ver2. I guess I could have mixed up tx to rx wires but before I switch them is there a way to see if they are talking. i did qground control mavlink inspector and voxl-vision-px4 --debug_udp_recv on voxl and got no messages from px4.
    question: I have voxl plugged into J5 Telem2 STM32 UART5 (ttyS4) on ver2.

    ver1 was the same
    Interface Connector (TELEM2, /dev/ttyS4, UART5)

    There should be no changes in any cong files correct?

    question2 is there a quick check command to see if any info is coming from the voxl to the ver2

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    • Adrian HidalgoA Offline
      Adrian HidalgoA Offline
      Adrian Hidalgo
      ModalAI Team
      wrote on last edited by Adrian Hidalgo
      #2

      @jconk Between FCV1 & FCV2 the RX & TX are flipped. Have you looked at our cable doc. The cable that originally comes on the Voxl-Cam with FCV1 is MCBL-00007.
      FCV2 will beusing MCBL-00008. There is also a really detailed doc with all of our cables here.
      MCBL-00007 is a straight cable no corssovers.
      MCBL-00008 has a crossover.
      6a6922d7-f0eb-4eee-bafd-cc384ef0ddbb-image.png

      Your Voxl in the Voxl-Cam will be flipped 180 degrees from this pic, usb on the bottom: 515b18ae-f4e5-4600-9e1d-a0c6f649606d-image.png
      Traditionally MCBL-00007 plugs into J12 on VOXL. Only, if after the switch around, still no data shows up, then if it works in your situation, use J11. If you decide to go down this route, you will also need to change which uart gets used:On Voxl

      vi /etc/modalai/voxl-mavlink-server.conf
      

      Change "px4_uart_bus": 5, for J12 connection
      To "px4_uart_bus": 12, for J11 connection

      ffa0edaf-46fa-48e1-87a7-f1b5a7dd909b-image.png

      For question 2:

      voxl-mavlink-server-r
      

      ^will give you a feed of mavlink to see the data running

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      • jconkJ Offline
        jconkJ Offline
        jconk
        wrote on last edited by
        #3

        Just an update. No communications on either telemetry port
        I'm trying not to have to remove and disassemble the voxl-cam. I guess i will read on settings , it says no messages from px4

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        • jconkJ Offline
          jconkJ Offline
          jconk
          wrote on last edited by
          #4

          @Adrian-Hidalgo said in rx-tx from v2 to voxl:

          px4_uart_bus": 12, for J11 connection

          worked transmitting data now

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