# RB5 Incorrect Altitude in QGC

Source: https://forum.modalai.com/topic/1049/rb5-incorrect-altitude-in-qgc
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: rb5
Posted: 2022-06-22 18:03:02 UTC by John Schmidt
Replies: 2 · Views: 572

## John Schmidt · 2022-06-22 18:03:02 UTC

Hi there,

I have been noticing that the altimeter in QGroundControl is displaying the wrong data for the RB5 Flight.  Moving the drone up by hand and holding it reports a positive number for a brief moment before reporting zero, and moving the drone down and holding it reports a negative number for a brief moment before reporting zero.  This makes me think that GQC is actually reporting vertical speed data instead of altitude data, and I tried a sensor calibration through QGC, but the problem still exists.  Is there a way to check the pose/vehicle odometry for the RB5 like there was for the VOXL drones?  Any help would be appreciated.

Thanks,
John S

## Reply by tom (ModalAI staff) · 2022-06-22 18:14:55 UTC

@John-Schmidt Any chance you're accidentally getting data from two RB5's coming through?

## Reply by John Schmidt · 2022-06-22 19:12:20 UTC

No, I don't believe so.  I only have one RB5 in the lab.