Arduplane gives me airspeed on my OSD as well as wind direction, but I couldn't find what it uses to compute that data if I don't have an airspeed sensor
I have APM Plane 3.0.3 on a pixhawk
For instance, at the 4:50 offset of this video, it's way wrong:
(my airspeed was not 18kph, way below my stall speed, and the wind speed was not 22kph, the rest of the flight never showed that value)
I assume that if I add an airspeed sensor, I'll get better data, but http://diydrones.com/forum/topics/airspeed-vs-gps-speed warns that it can be tricky to setup in APM. Still, I think I'll give it a shot.
I asked a similar question in this thread: http://diydrones.com/forum/topics/without-airspeed-sensor-how-does-...
A couple of the replies might help you.
oops, look like I failed to answer you.
Thanks much for the link. Pure f'ing magic it is :)