# QGC obstacle display bug?

Source: https://forum.modalai.com/topic/737/qgc-obstacle-display-bug
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-02-14 07:34:37 UTC by hmlow
Replies: 4 · Views: 915

## hmlow · 2022-02-14 07:34:37 UTC

Im using a brand new Seeker drone kit.
While setting up, I noticed that there is a issue with how QGC displays the obstacles reported by VOXL - it seems to be offset 90 degrees to the right.

![qgc.jpg](https://forum.modalai.com/assets/uploads/files/1644823955237-qgc.jpg) 

I took a look at how the the voa manager (https://gitlab.com/voxl-public/modal-pipe-architecture/voxl-vision-px4/-/blob/master/src/voa_manager.c) populates the obstacles info into the OBSTACLE_DISTANCE message (https://mavlink.io/en/messages/common.html#OBSTACLE_DISTANCE) and it seems to agree with how i understand the message is to be used.

Does anyone face the same problem? Is this a QGC bug or is the VOXL sending the obstacles incorrectly to PX4?

## Reply by mohammednaveed · 2022-02-14 22:36:18 UTC

Hi @hmlow 
I am facing the same issue as well!

https://forum.modalai.com/topic/696/overlay-of-obstacle-during-collision-prevention

Thanks & Regards,
Mohammed Naveed

## Reply by Chad Sweet (ModalAI staff) · 2022-02-15 02:01:49 UTC

Hi, we have not actually used QGC to debug collision prevention ourselves.

The tools we use to debug collision prevention can be found on our docs [here](https://docs.modalai.com/voxl-vision-px4-collision-prevention/#debugging-collision-prevention)

If you find anything related to QGC integration, a follow-up would be appreciated!

## Reply by hmlow · 2022-02-15 02:20:02 UTC (in reply to mohammednaveed)

@mohammednaveed said in [QGC obstacle display bug?](/post/3423):
> Hi @hmlow 
> I am facing the same issue as well!
> 
> https://forum.modalai.com/topic/696/overlay-of-obstacle-during-collision-prevention
> 
> Thanks & Regards,
> Mohammed Naveed

Good to know that im not alone!
Do you have the issue shown here as well?
https://forum.modalai.com/topic/176/what-is-for-avoidance-collision-prevention-error

## Reply by hmlow · 2022-02-15 02:22:36 UTC (in reply to Chad Sweet)

@Chad-Sweet said in [QGC obstacle display bug?](/post/3425):
> Hi, we have not actually used QGC to debug collision prevention ourselves.
> 
> The tools we use to debug collision prevention can be found on our docs [here](https://docs.modalai.com/voxl-vision-px4-collision-prevention/#debugging-collision-prevention)
> 
> If you find anything related to QGC integration, a follow-up would be appreciated!

Thanks. Will probably report this to the QGC dev team as an issue