Amendment 1:
The Altitude D is 100, P is set to 8. (can be larger, but not more than 11, otherwise there will be abnormal)
Amendment 2:
IMU.cpp three is called the applyDeadband code needs to change.
// applyDeadband(accZ, ACC_Z_DEADBAND);
applyDeadband(accZ, ACC_Z_DEADBAND > 1); // Skypup 2014.09.02
// applyDeadband(baroVel, 10); // to reduce noise near zero
applyDeadband(baroVel, 6); // to reduce noise near zero Skypup 2014.09.02
// applyDeadband(alt.vario, 5);
applyDeadband(alt.vario, 3); // Skypup 2014.09.02
Video:
http://v.youku.com/v_show/id_XNzcyMzIyNDAw.html
[flash]http://player.youku.com/player.php/sid/XNzcyMzIyNDAw/v.swf[/flash]