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3D RoboticsPermalink Reply by Chris Anderson on December 23, 2012 at 12:09pm

Sounds like one or more channels got reversed. Try the various other arming possibilities (bottom left, top right, top left) and see if one works. That will tell you which channel got reversed. 

Also, needless to say you should go through the RC calibration process again, as is the case anytime you change your RC system.

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Permalink Reply by Dan on December 23, 2012 at 12:16pm

Actually I did try that but I did it again holding for 10 seconds at each corner before giving it throttle with no results for any corner I tried.  Also did the calibration each time it reloaded 2.8.1. The radio appears to respond in the mission planner, I just can't arm the APM.

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Permalink Reply by Steve S on December 23, 2012 at 12:26pm

I just had the same type problem and i re-calibrated the radio using the mission planner and all is working fine now.

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Permalink Reply by Dan on December 23, 2012 at 12:26pm

Have done it several times. No love.

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Permalink Reply by Dan on December 23, 2012 at 12:37pm

Also tried to set the mix to 80% on all channels as suggested on the 9x forum with no result.

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ModeratorPermalink Reply by Carl Campbell on December 23, 2012 at 4:41pm

make sure that the stick layout is for mode 2 and moving to RC equipment.  

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Permalink Reply by Dan on December 23, 2012 at 9:14pm

It is mode 2, Not sure what you mean by "moving to RC equipment". 

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Permalink Reply by Choppy on December 24, 2012 at 3:10am

Hi Dan, do the esc's give a warning beep like it was started with the throttle up? I mention this cause that's my problem at the moment.  On the other hand, as you updated your tx, try putting servos on the rx and see if they have the full throw as it was before the update of the tx (if you remembered or did so before)

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Permalink Reply by Majid Khan on January 7, 2013 at 11:48am

Choppy is right. Try connecting a servo to different channel and or notice them on Radio calibration page on Configuration page of APM. If you have a wrong channel hooked up, you will definitely notice it. Also remember that arming / disarming requires a 100% yaw to the left and right respectively along with 0 throttle. So in case you might have limited the stick input, it won't work.

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Permalink Reply by Choppy on March 8, 2013 at 6:48am

Had a friend with the same problem but this time it was because the Rx was not bound properly with the TX (spectrum DX8).He has two quads where one quad  was bound ok but not the other which tells me the model memory was not done right.

(The radio calibration page did not show stick movements on one unit )   I guess the DX8 cant bind to two receivers at different times with the same profile so model map should be done.

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