# PX4 calibration

Source: https://forum.modalai.com/topic/5140/px4-calibration
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: starling
Posted: 2026-03-30 15:01:05 UTC by Aniruddha
Replies: 6 · Views: 1082

## Aniruddha · 2026-03-30 15:01:05 UTC

Hello Everyone,
I have Starling 2 drone and I am trying perform px4 horizon calibration using voxl-calibrate-px4-horizon command. but when I take off the drone I am loosing control of it and It is crashing. is there any other way to perform this calibration

## Reply by Eric Katzfey (ModalAI staff) · 2026-03-30 15:42:26 UTC

@Aniruddha Can you use level calibration in QGC instead? Are you saying that you are crashing after running voxl-calibrate-px4-horizon or in your attempt to run it? What flight mode are you using in your flight? If you fly in manual mode is everything okay?

## Reply by Aniruddha · 2026-03-30 16:01:14 UTC (in reply to Eric Katzfey)

@Eric-Katzfey when I fly in manual mode it is fine. I set drone on position mode as it said in documentation. I run the command and start calibration then I take off drone from ground. when I move drone after that drone twitch in the air and I lost hit the drone to the safety net. i tried to do it from QGC but when I go to vehicle configuration I don't see any option. and only summary tab which is empty and and firmware tab.

## Reply by Eric Katzfey (ModalAI staff) · 2026-03-30 19:10:09 UTC (in reply to Aniruddha)

@Aniruddha Did you follow this guide: https://docs.px4.io/main/en/config/level_horizon_calibration

## Reply by Aaron Porter · 2026-03-30 21:40:38 UTC

@Aniruddha 
How are you connecting the Ground Station to the Starling 2? Seems like your QGC instance is not fully loading up the parameters so you are not getting the sensors tab to do the level horizon calibration.

## Reply by Aniruddha · 2026-03-31 15:33:25 UTC (in reply to Aaron Porter)

@Aaron-Porter I am connecting drone to Access point router and I then connected it to QGC station. I can see the camera feed from drone on QGC

## Reply by Aaron Porter · 2026-03-31 15:49:12 UTC (in reply to Aniruddha)

@Aniruddha 
On QGC, do the Parameters ever fully load? The reason I am asking is because if the connection to the GCS is not fast enough or strong enough for QGC to fully download the parameters then the other tabs like sensors and actuators in QGC will not appear. Which is why you are having an issue doing the level horizon from QGC.  I know that QGC is seeing the video feed meaning you are connected, is the Green bar going across the full length of the fly view bar on QGC?