# I need to help about Multi-vehicle

**URL:** <https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410>\
**Category:** Uncategorized\
**Created:** [January 12, 2018, 4:14am UTC](https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410 "2018-01-12T04:14:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Seunghwan\_Choi](https://discuss.px4.io/letter_avatar_proxy/v4/letter/s/f6c823/32.png) [@Seunghwan\_Choi](https://discuss.px4.io/u/Seunghwan_Choi)\
**Post date:** [January 12, 2018, 4:14am UTC](https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410/1 "2018-01-12T04:14:08Z")

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This below picture is my ubuntu…

I command “roslaunch px4 multi\_uav\_mavros\_sitl.launch” on my terminal.

After that, Gazebo is popped up and I can show 3drones model.  
But, I have only one terminal that is just showed “pxh\>”.

My question is this. Why can I see just one terminal? In my think, this one terminal has 3 simulators.

How to command each drone?

 ![](https://discuss.px4.io/uploads/default/original/2X/b/bb561f575bac757c6634102a83872a94da5bee20.jpg)

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**Author:** ![dakotasanchez](https://discuss.px4.io/letter_avatar_proxy/v4/letter/d/51bf81/32.png) [@dakotasanchez](https://discuss.px4.io/u/dakotasanchez)\
**Post date:** [January 28, 2018, 11:59pm UTC](https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410/2 "2018-01-28T23:59:46Z")

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Yeah I’d like to know this also. There should be a way to have two separate PX4\> prompts in two separate terminals…

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**Author:** ![Yograj\_Singh\_Mandloi](https://discuss.px4.io/letter_avatar_proxy/v4/letter/y/d78d45/32.png) [@Yograj\_Singh\_Mandloi](https://discuss.px4.io/u/Yograj_Singh_Mandloi)\
**Post date:** [February 27, 2018, 3:20am UTC](https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410/3 "2018-02-27T03:20:38Z")

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You can control each drone with Qgroundcontrol [demo](https://www.youtube.com/watch?v=AKep_iQlduY) following updated [documentation](https://dev.px4.io/en/simulation/multi-vehicle-simulation.html). I am not sure about control from terminal I think to control the drone with terminal then you need to send control command with ROS to the udp corresponds to drone.

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**Author:** ![Seunghwan\_Choi](https://discuss.px4.io/letter_avatar_proxy/v4/letter/s/f6c823/32.png) [@Seunghwan\_Choi](https://discuss.px4.io/u/Seunghwan_Choi)\
**Post date:** [February 27, 2018, 7:06am UTC](https://discuss.px4.io/t/i-need-to-help-about-multi-vehicle/5410/4 "2018-02-27T07:06:52Z")

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How about you using dronekit?  
In my case, finally I make some GCS using dronekit.  
The GCS which made myself with dronekit can control each drone.  
I’m not sure, but it is helpful.