# Help! lossing data from camera + IMU tracking

Source: https://forum.modalai.com/topic/76/help-lossing-data-from-camera-imu-tracking
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: m500
Posted: 2021-01-04 05:07:29 UTC by Vũ Văn Long
Replies: 5 · Views: 1409

## Vũ Văn Long · 2021-01-04 05:07:29 UTC

Hello, im working with m500 drone. when i starting with ROS, i was calibration camera  [here](https://docs.modalai.com/configure-cameras/). after that m500 cannot display the value of x,y in NED position in QGC (just remain Z value). after reading document i think the SNAV was reset after i ran config command. it's right? 
Then the solution is recalib the Modalai Visio Lib at  [here](https://docs.modalai.com/modalai-vision-lib/)? but what is the selection for IMU and tracking camera? Please confirm if i miss anything. 
![135484014_238915161119584_4752512251384604866_n.jpg](https://forum.modalai.com/assets/uploads/files/1609736749848-135484014_238915161119584_4752512251384604866_n-resized.jpg)

## Reply by James Strawson (ModalAI staff) · 2021-01-04 21:53:53 UTC

Hello,

The M500 should have been sent to you all configured and working. Do you mind stopping the voxl-vision-px4 service and running voxl-test-vision-lib to see if VIO is working? You can use the following commands:

systemctl stop voxl-vision-px4
voxl-test-vision-lib -o

## Reply by Vũ Văn Long · 2021-01-05 00:48:13 UTC (in reply to James Strawson)

@James-Strawson said in [Help\! lossing data from camera \+ IMU tracking](/post/259):
> 
> voxl-test-vision-lib -o

hello, i was ran that command and it's have an error. 
![Screenshot from 2021-01-05 07-47-29.png](https://forum.modalai.com/assets/uploads/files/1609807690734-screenshot-from-2021-01-05-07-47-29.png)

## Reply by Vũ Văn Long · 2021-01-05 00:53:37 UTC (in reply to Vũ Văn Long)

@Vũ-Văn-Long and after i run command check the status 
![Screenshot from 2021-01-05 07-53-28.png](https://forum.modalai.com/assets/uploads/files/1609808015886-screenshot-from-2021-01-05-07-53-28.png)

## Reply by Vũ Văn Long · 2021-01-05 06:57:57 UTC

Problem Solved. for anyone in the future have similar case just  perform factory configuration for VOXL Flight Deck by
"voxl-configure-vision-px4 -f"  and then re-connect to QGC and you will see the miracle.

## Reply by mr TOKI · 2021-01-05 14:45:18 UTC (in reply to Vũ Văn Long)

@Vũ-Văn-Long wow amazing goodjob