Hi,I’m currently developing a fixed wing UAV with stalling speed around 6m/s. I use 3DR’s Pixhawk to measure the performance of this UAV. The air speed is measured by 3DR’s Pixhawk air speed sensor as below.https://store.3drobotics.com/products/pixhawk-airspeed-sensor-kitDuring the test I found that the airspeed sensor gives data of 0 m/s when the airspeed drops to be below 3m/s and there are relative large fluctuation when the airspeed is below 8m/s. That means this airspeed sensor might not be very accurate for low speed. Have anyone got similar problem or you think I did anything wrong with it? If this airspeed sensor can’t measure that low airspeed, could anyone recommend an airspeed sensor to me for this usage?