Issues detecting/calibrating 4525DO airspeed sensor

Hello! I'm having some trouble detecting and calibrating the airspeed sensor for a fixed-wing UAV I'm building. I'm running a PixRacer flight controller.

When on the latest PX4 firmware (1.13.3), I get an error “[cal] calibration failed: airspeed” after ten or so seconds once I click calibrate. I have changed the SENS_EN_MS4525DO parameter to enabled.

I'm also having some issues with the radio on this firmware, so ideally, I'd like to run version 1.11.0. However, this version doesn't include the parameter above, so I do not know how to enable the sensor. If I try to calibrate it anyway, I get the error “[cal] no airspeed sensor found”.

Thanks very much for any help!

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