ACRO bug (fixed in 2.9.1b): while doing flips in ACRO mode, if you switch to Stabilize while inverted your throttle will go to minimum. To regain throttle control you need to switch back to ACRO then back to Stabilize again (i.e. switch to stabilize twice). You never lose control of roll/pitch/yaw.
Loiter/AltHold/Auto/RTL bug: if you switch into these modes with throttle at zero motors will go to minimum until you raise the throttle.
Auto mode altitude bug (fixed in 2.9.1b): setting a waypoint altitude greater than 320m over home altitude may wrap around and instead be interpreted as a low altitude.
ArduCopter 2.9 is now in the mission planner and the downloads area!
The major improvement is we use inertial navigation to improve altitude hold. This increased reliance on the accelerometers means you must do some additional set-up before flying:
3. If upgrading from 2.8.1, modify the throttle and altitude PID values:
Here is the list of major changes (a more detailed list can be found in the release notes):
As per usual PIDs are optimised for the 3DR/jDrones quad with 850 motors and 10" props. If you're using more powerful motors/props and are seeing bad flight behaviour in stabilize, start by turning down Rate Roll P in 25% steps.
Special thanks to our testing team lead Marco and the dedicated bunch on the 2.8.1 release thread who put their copters at risk while testing the pre-release version. Some of their videos are here: 1 2 3 4 5 6 7 8
Please feel free to report issues you find in the discussion below and/or add them to the issues list.
You just need to go to page 48 to find out how to balance your motors :)
XAircraft are those of very resistant plastic I have a year and a half using this frame with 8x settings and excellent result, the 8x are Draganfly carbon and plastic motor bases.
where can i find 2.9 stock settings?
i tried reloading firmware but it keeps my old settings...
thank you for all your hard work ...i will spread the word so everyone i know has this great oppertunity.
There are many engines from 20 dollars to 60 coming well balanced for example the used by me are those of the xaircraft, are the dji and others with more torque for larger accessories.
In the mission planner, after loading,
right side, terminal, wait, help, setup, erase, reset, and ready.
then set the level of the accelerometers http://vimeo.com/56224615 , and radio, etc....
Had the same thing happen today. Alt hold was great.. but when I put it on Loiter it would hang on for a second, and then race off in one direction or another... needing to be corralled back under normal control.