# 3rd Party Software Control - RC\_Override vs Manual\_Control

**URL:** <https://discuss.bluerobotics.com/t/3rd-party-software-control-rc-override-vs-manual-control/5169>\
**Category:** ArduSub\
**Tags:** pymavlink, sitl, simulate\
**Created:** [May 29, 2019, 10:15am UTC](https://discuss.bluerobotics.com/t/3rd-party-software-control-rc-override-vs-manual-control/5169 "2019-05-29T10:15:27Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![DrewFulton](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/drewfulton/32/1872_2.png) [@DrewFulton](https://discuss.bluerobotics.com/u/DrewFulton)\
**Post date:** [May 29, 2019, 3:59pm UTC](https://discuss.bluerobotics.com/t/3rd-party-software-control-rc-override-vs-manual-control/5169/4 "2019-05-29T15:59:26Z")

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Quick SITL question… I’ve got it up and running and QGC connects to it fine. I can’t get my python app to connect. normally, the rovAddress is udp:0.0.0.0:14660 in my program. I think I remember adding an output to that port through the web interface on the companion. Now, I’m trying to figure out what address I should use when connecting to SITL. I’ve tried starting SITL with the following but that doesn’t help.

```
sim_vehicle.py -L RATBeach --out=udp:0.0.0.0:14550 --out=udp:0.0.0.0:14660 --map --console

```

I’ve tried using 14550 and not launching QGC. Nothing. Any suggestions? I know I am probably missing something super simple but I’m not finding it.

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