AC 3.4rc5 on Pixhawk V2. How to enable wind speed logging?

@Armando_Rello wrote:

How to enable logging of Wind Speeds from the EKF2?
I'm trying to log wind speeds to estimate accuracy against a sonic anemometer @ 20 meters above ground.

I've tried various firmware versions and even releases type (stable, dev, latest) and in POSHOLD.

All my logs have a zero value for NKF2 (NKF9) for variables VWN & VWE

The hardware i have is:
Pixhawk V2 clone
UBLOX m8 gps
DJI F450 frame

I have read that wind speed estimation only works without GPS & Magnetometer, is that correct?

Thanks for your help

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