# drone issues-starling 2

Source: https://forum.modalai.com/topic/5062/drone-issues-starling-2
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: fpv
Posted: 2026-02-13 17:17:03 UTC by taiwohazeez
Replies: 2 · Views: 1986

## taiwohazeez · 2026-02-13 17:17:03 UTC

Hello modal AI, 
I have similar issues with all my starling 2 drones, and I keep crashing them. When I toggle my controller from manual mode to position mode, I expect the drone to hold its current height, and hover there, sometimes it does that, sometimes it lands (and I  am sure it's not because of the battery because I have done this with fully charged batteries), if this was only what happens, I wouldn't really have much concerns, but sometimes, when I toggle the switch, the drone flies away and I can't control it with the left stick except I use the kill switch button, the drone eventually crashes. I would have sent a footage for better visualization, but I don't have the privilege to upload videos. 
I have been working with these drones for a little while , but I can seem to understand why it does that. 

This is the third drone I am sending in for RMA, and I don't know why they are crashing.  I can't keep crashing drones. 

Kindly help me please. 

NOTE: My drones are using different SDK versions (1.4.5, 1.5.0, 1.6.2)
I have used qvio, i switched to open vins also.

Also, sometimes on QGC, i get position and height estimate unstable, I hve calibrated the compass, gyro and accelerometer several times, yet i still have same issue. There are times where I get strong magnetic interference error also (i try to move the drone far away before powering on), I have attached the image of my lab, to see if this is the major cause. Right now, I don,t know why it behaves like that. I also attached my controller to see the toggling switch toggling i meant.

Also, what do I do when i get position, height and velocity estimate error ?

Thanks ![WhatsApp Image 2026-02-13 at 10.53.46 AM.jpeg](https://forum.modalai.com/assets/uploads/files/1771002898398-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/1771002898471-whatsapp-image-2026-02-13-at-10.53.46-am-1.jpeg) ![WhatsApp Image 2026-02-13 at 12.12.59 PM.jpeg](https://forum.modalai.com/assets/uploads/files/1771002898644-whatsapp-image-2026-02-13-at-12.12.59-pm.jpeg)

## Reply by Moderator (ModalAI staff) · 2026-02-15 02:06:45 UTC

@taiwohazeez start with going through the troubleshooting tips: https://docs.modalai.com/flying-with-vio/#troubleshooting-vio

qvio_overlay or ovins_overlay are going to be very informative

## Reply by taiwohazeez · 2026-02-16 13:46:59 UTC (in reply to Moderator)

@Moderator thank you so much, I will go through that now.