# TELEMETRY DATA

Source: https://forum.modalai.com/topic/5036/telemetry-data
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: fpv
Posted: 2026-02-06 15:32:35 UTC by taiwohazeez
Replies: 4 · Views: 3033

## taiwohazeez · 2026-02-06 15:32:35 UTC

Hello support, 

How can I get telemetry data for my starling 2 drone? Is there an App available?

Thanks.

Regards,
Taiwo

## Reply by Eric Katzfey (ModalAI staff) · 2026-02-06 16:22:13 UTC

@taiwohazeez This is what most people use: https://qgroundcontrol.com/

## Reply by taiwohazeez · 2026-02-11 18:14:52 UTC (in reply to Eric Katzfey)

@Eric-Katzfey thank you for that. I have another issue, when i toggle the controller from manual mode to position mode, sometimes he drone holds it height, but sometimes, it just flies away and crashes. I have calibrated the compass, gyro and accelerometer, it still exhibit same behavior (infact thats how all the drones behave), so that means there is something I am not doing right, or I am missing. I ran ros2 topic echo /fmu/out/vehicle_odometry to see whats happening with the VIO, this was the output: 

 timestamp: 1770551010017542
timestamp_sample: 1770551010015689
pose_frame: 1
position: [1.8852728605270386, 0.3567788600921631, -7.352701663970947]
q: [0.9946960806846619, 0.013231446966528893, -0.00516587495803833, 0.1018725335597992]
velocity_frame: 1
velocity: [-0.0011717384913936257, 0.002392425434663892, -0.004358584061264992]
angular_velocity: [0.0007909969426691532, -0.003044810611754656, -0.0005365335382521152]
position_variance: [0.00031149128335528076, 0.00031149270944297314, 0.0004529791767708957]
orientation_variance: [1.4802474652242381e-05, 1.478460126236314e-05, 0.00020037211652379483]
velocity_variance: [0.0006313467747531831, 0.0006313963094726205, 0.0006925623747520149]
reset_counter: 25
quality: 0

This is weird because the drone is on the ground, why is my Z reading -7.352? 
Also, i keep getting heading_good_for_control: False (what can i do to fix it?) 

I moved the drone round the lab to capture features, yet the quality is still zero, and why does it keep resetting (from the reset_counter)?. 

Kindly help.
Thanks
![Screenshot from 2026-02-11 13-04-11.png](https://forum.modalai.com/assets/uploads/files/1770833678170-screenshot-from-2026-02-11-13-04-11.png)

## Reply by Cliff Wong (ModalAI staff) · 2026-02-12 03:04:45 UTC (in reply to taiwohazeez)

@taiwohazeez HI There,

What SDK version are you using. Anything over version 1.5.3, we recommend using the openvins VIO implementation rather than Qvio.

Typically a different XYZ value from actual indicates VIO reset during flight. What you want to try 1st is a [bench test to confirm vio is set up correctly](https://drive.google.com/file/d/1x81Kq3Y9VniPKNF5DQ--caLs80V72ujQ/view?usp=sharing). Essentially power up the drone on a level surface, then connect to it and bring up voxl-portal (http://<ip of the drone>) and goto the VIO page. The page will show the drone in local space (0,0,0 xyz) if you pick up the drone and move it in a 3D plus pattern the vio page in portal should reflect that. If it does not, then we a configuration issue.

## Reply by taiwohazeez · 2026-02-13 17:25:44 UTC (in reply to Cliff Wong)

@Cliff-Wong the drone is on SDK 1.5.0, I switched to open vins, and the vio portal reflected the movement, but when i toggled my controller from manual mode to position mode, the drone crashed for the first fight, on the second and third trial the drone kept landing, when i tried the fourth time, the drone finally maintained the height and hovered. Why do I have that unpredictable behavior ? I have attached images of my controller to show the toggling i meant.

Kindly advice. 
Thanks. ![WhatsApp Image 2026-02-13 at 10.53.46 AM.jpeg](https://forum.modalai.com/assets/uploads/files/1771003494197-whatsapp-image-2026-02-13-at-10.53.46-am.jpeg) ![WhatsApp Image 2026-02-13 at 10.53.46 AM (1).jpeg](https://forum.modalai.com/assets/uploads/files/1771003494284-whatsapp-image-2026-02-13-at-10.53.46-am-1.jpeg)