# can't connect m500 drone to qgroundcontrol

Source: https://forum.modalai.com/topic/2436/can-t-connect-m500-drone-to-qgroundcontrol
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-07-18 05:39:04 UTC by Syed Omair
Replies: 1 · Views: 779

## Syed Omair · 2023-07-18 05:39:04 UTC

I have seen multiple posts on this forum with the same issue and tried multiple solutions but none of them seem to work 

![Screenshot 2023-07-18 at 12.37.38 AM.png](https://forum.modalai.com/assets/uploads/files/1689658706484-screenshot-2023-07-18-at-12.37.38-am.png) 

some of the things I have tried. 

- changing sdk versions (tldr: upgraded from 0.9.4 -> 0.9.5, it wasn't working.)
[voxl upgrade guide](https://docs.modalai.com/flash-system-image/#upgrading-voxl-sdk)
["connected to voxl-mavlink-server but no messages from PX4"](https://forum.modalai.com/topic/2248/connected-to-voxl-mavlink-server-but-no-messages-from-px4/7)

- checked and "external_fc" is false
["Connected to voxl-mavlink-server but no messages from PX4" again :) ](https://forum.modalai.com/topic/2057/connected-to-voxl-mavlink-server-but-no-messages-from-px4/2)

- tried monitoring if mavlink is sending messages. and nothing works.  
[mavlink monitoring](https://forum.modalai.com/topic/688/warning-px4-disconnected-from-uart/6)
![Screenshot 2023-07-18 at 1.09.42 AM.png](https://forum.modalai.com/assets/uploads/files/1689660586570-screenshot-2023-07-18-at-1.09.42-am.png) 

- something that is potentially interesting. this down here wasn't the case before. 
![Screenshot 2023-07-18 at 1.03.16 AM.png](https://forum.modalai.com/assets/uploads/files/1689660202087-screenshot-2023-07-18-at-1.03.16-am.png)
below is the output to ```voxl-qvio-server```
![Screenshot 2023-07-18 at 1.22.11 AM.png](https://forum.modalai.com/assets/uploads/files/1689661335809-screenshot-2023-07-18-at-1.22.11-am.png) 

- followed this guide.
[Connect m500 to PX4](https://docs.modalai.com/voxl-m500-user-guide-px4/)

- checked for loose connections. unplugged and plugged everything back in
[loose connection](https://forum.modalai.com/topic/1639/px4-disconnected-from-uart/3?_=1689583853761)

- I want to try this solution but I can't get a wired connection to qgroundcontrol. any help with that would be appreciated
[wired connection to qgc solution](https://forum.modalai.com/topic/1453/can-t-connect-to-qgroundcontrol-over-wifi?_=1689661461361)

Thank you for your time and help,
Omair

## Reply by Syed Omair · 2023-07-18 16:12:26 UTC

for anyone who has the voxl-qvio issue where it says state FAIL, just try centering (using your fingers and wiggling) the voxl board and it will work. I think it just needs to be centered.