now I currently use sonar that I used for the Altitude hold, can it work....????
because when I saw the feature of APM sensor used for altitude hold is Barometer
Both are used. Sonar for low altitude, Barometer for high altitude.
If you move to APM2, you'll find it has a much improved barometer..so much better than you may decide that you don't need a sonar.
ok, thank you Mr. Randy...... I'm currently use APM 1.4
I still have a question.......why does not my Quadcopter fly stable?, it flies up and down when I switched to Alt_hold mode from My radio at 2 meters height.
Randy, is it possible to buy this improved barometer to replace the old one on the 1280 board? Knowing my
luck I bet the pin connections are differant and/or the software has to be modified.