# MAVProxy Connection Problem

**URL:** <https://discuss.px4.io/t/mavproxy-connection-problem/39193>\
**Category:** MAVLink\
**Created:** [June 11, 2024, 7:12pm UTC](https://discuss.px4.io/t/mavproxy-connection-problem/39193 "2024-06-11T19:12:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ege](https://discuss.px4.io/user_avatar/discuss.px4.io/ege/32/16593_2.png) [@Ege](https://discuss.px4.io/u/Ege)\
**Post date:** [June 11, 2024, 7:12pm UTC](https://discuss.px4.io/t/mavproxy-connection-problem/39193/1 "2024-06-11T19:12:45Z")

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Hello,

I’m making a ROV with pixhawk 2.4.8 and the companion computer “Jetson Nano 4GB”. I was connecting to my pixhawk via USB cable which is plugged into Jetson. I was using MAVProxy and QGC for ground computer to controller connection. It was going well until something I can’t understand happened.

Here’s my codeline for opening up UDP connection:  
`$ mavproxy.py --master=udp:169.254.242.51:14550 --out=/dev/ttyACM0,921600`

When I try to connect it it says

`“Link 1 OK”`

but after that it doesn’t show any mission parameters (FGear\_in, FGear\_out) and I can see that QGC still says “Disconnected”. What should I do?

Thanks in advance.

P.S. : I’m establishing communication between ground computer and companion via PLC(Power Line Communication)