Servers by jDrones

Airspeed reporting in MAVLINK

(Henry Wurzburg) #1

Is airspeed reported via MAVLINK when no airspeed sensor is enabled? I know that it is continually computed by Arduplane even if no airspeed sensor is present as is wind speed and direction. The reason I ask, is that on my OSD, I can display wind speed, ground speed, but not airspeed…its always 0. This is Night-Ghost’s extended MinimOSD-Extra software. Perhaps its an error in his software…I am using a Pixhawk system.

(Henry Wurzburg) #2

Turns out that 3.8 added a param called ARSPD_TYPE, which if non-zero, makes the system think there really is a sensor and whatever it measures on that pin will be used…in my case 0. This would also make stall prevention non-functional, I think. Mission Planner provides no option for NO SENSOR currently, so you have to set this directly in the param. I have asked for a fix/enhancemet to make the default no sensor and provide that option in Mission Planner…

(tridge) #3

no, it only affects reporting unless you have ARSPD_USE set to 1
Flight control is completely unaffected if ARSPD_USE=0, which is the default