"Randy,

Can we expect similar performance with that of DJI on 2.9.2 ???
With due respect to all the developers and testers, DJI is still way ahead... in terms of filtering, smoothness and performance...

I am asking this because much of the code in…"

"Randy, Leonard,

Any update on the 2.9.2 ???

I believe most of the issues in 2.9.1 will get ironed out with 2.9.2"

"Hi Randy, Here is my raw log file. Do you feel that there is too much vibration? Not very sure how to interpret... I have the APM 2.5 mounted on the o ring suspension. Please help interpret. Also, as I had told you earlier, my COMPASS_OFS_Y keeps…"

"Hi Randy,

Here is my raw log file. Do you feel that there is too much vibration? Not very sure how to interpret... I have the APM 2.5 mounted on the o ring suspension.
 
Please help interpret. Also, as I had told you earlier, my COMPASS_OFS_Y keeps…"

"Hi Randy,
 
This is what I did.. As I told you that my COMPASS_OFS_Y was way too much, I reset COMPASS_OFS_X, Y and Z values to 0. Enabled the COMPASS_USE and the yaw drift i spoke about was gone. However, the COMPASS_OFS_X, Y and Z values rebuild…"

"Randy,
 
Could you please explain the parameter "COMPASS_USE"
 
I have a peculiar problem. When I fly with "COMPASS_USE" set to 1, the copter automatically Yaws 20-25 degree. Also, in the Stabalize mode, the copter automatically starts moving to…"

"For most of the people who have tried auto-land and usually do it, does the default descend rate of 50cm/sec work fine? Or you need to reduce it? I want my quad to touchdown very lightly and smoothly as I fly on tarmac. What is the ideal rate that…"

"Randy,

Could you please compile the list of changes that you have in mind for the 2.9.1 release. Eagerly await the inertial nav for loiter. With this, I am guessing we will surpass DJI.

BTW, could you please explain the COMPASS_USE parameter? I…"

"Another question. ..

I have leds connected to my APM. Once the gyros are initialized, they start blinking. Once I arm the quad, the frequency of blinking increases... earlier in 2.8.1 they used to go solid. However, in 2.9, at times they go solid…"

"Ok.. just have a quick question...

What is the parameter "AHRS_COMPASS_USE" used for?

When I upgraded to 2.9, it got enabled and my quad used to yaw about 25-30 deg automatically in the stabilized mode. I was so damn worried... when I disabled it,…"

"KUDOS TO THE WHOLE TEAM...specially to Randy and Marco...

Accelerometer calibration needs to be done everytime or just once???"

"Go ahead. It is normal... dont worry about this dialog box. Update it with 3dr file. I have done this.. works like a charm."

"Hi Chris and Joe,

Sorry... I am being a noob here.. Just trying to understand your statement... "So you won't be able to upgrade the firmware on that chip without using an ICSP programmer"
 
Does that mean that I cannot load Arducopter 2.9 when it…"

"I had a similar problem yest, though not exactly the same.
In the auto mode I had programmed to auto takeoff to 10 mts.
Then to go to waypoint A at 15 mts.
Then goto waypoint B at 15 mts
Then RTL.

My quad took off properly to 10 mts. It yawed to…"