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Permalink Reply by Mike Mac on March 4, 2013 at 8:55am

I have the same problem but it is not as bad as yours. I think that we will have to wait for the next firmware update before that is fixed.

　

I am going to upgrade my old APM2 on my Y6 today so we will see how level it comes out. With a Y frame it’s a real pain to do the new calibration.

　

　

 

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Permalink Reply by Mike Mac on March 4, 2013 at 10:24am

I just got 2.9.1 installed in my Y6 APM2 and it was level after doing the calibration. I did the calibration with the board removed in the plastic case. I had to remove it to do the PPM Encoder update anyway. That way I could easily get it level in all axies. I had only the USB cable connected – No GPS – NO Receiver.

I think that I will try the same thing with my Quad with APM 2.5 and see if I get a better calibration.

　

 

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Permalink Reply by Darren Royle on March 5, 2013 at 2:19am

hi

 i had the seem problem .it only started when i put my 2.5 in the plastic case .

it turned out that the board  could move around in the case . so i used double side tape

to hold down the board to bottom of the case . seems to work at keeping it level so far...

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Permalink Reply by Peter Seddon on March 5, 2013 at 3:40am

I had the same problem on two 'copters. The one would not respond to leveling using CH7 or redoing the accel calibration and I finally reloaded the firmware, erased the EEPROM and started again - success. The other required just very careful calibration and making sure the copter was vertical/horizontal.

Peter   

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Permalink Reply by Sebastian K on March 7, 2013 at 5:40am

Hi Simon, I had the same problem. Levelling my hexa with Mission Planner or using in-flight trim didn't work. What finally worked was using the fields AHRS_TRIM_X (roll) and AHRS_TRIM_Y (pitch) in the Advanced Parameters List. These values are in Radians, so be careful what you enter and check the results while on ground. Worked perfectly for me.

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