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Problem with motor

Hi.... I'm  a beginner of using the arducopter using APM 2560, all the instruction I've done,such uploding the APM 2560, calibrating ESC, RC, and the motors have started beeps as usual, but the command from RC doesn't mean for the motors such throttl

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sonar reading problem

Hi Everyone:

    I use a MB 1200 sonar for my arducopter. I test the sonar in CLI mode. But I observed that the sonar reading is always around 608cm when I put the arducopter on the table. After that I detach the sonar from the arducopter but maintain

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Missing reverse parameter

Why do I keep getting "Reverse parameter missing" when I enter radio setup in the APM planner? I had planner version 1.0.98 and AC2 .50 loaded. I had it flying with .50 loaded and I went through a lot to get the reverseing to save. I went back into t

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Lift off stability

I have been wondering about this problem since i start to use APM about a year ago. After changing different airframe and motors, the behavior doesn't seems to improve. I check with a local friend who also  encounter the behavior.

Behavior: Tilting le

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Z axis accel implementation

I read a post somewhere about activating the Z-axis accel. Can't find it now.

 

I would like to activate the Z-accel to stabilize the altitude at hover. Want to be able to demonstrate the push the copter down and it pops back up to where it was.

 

Could

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APM cannot start

Hi All:

   I had a strange problem. Today I connected the APM to RC, PDB, sonar, xbee as usual ( I am sure in the correct way). I found when I pluged in the battery those blue and red leds were only on for a short time and off after that the apm becam

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Xbee RTH failsafe

So I am interested in playing with FPV, although I am paranoid that if I fly more than several hundred feet away I will lose the signal and crash.  So what I am interested in is a failsafe that will automatically trigger RTH when either direction of

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Puzzled Newbie question

Trying figure out how arming sequence changed from bottom right to top right after Apm reset. After a flying, next time I powered up Apm would not start motors but green light stayed on. I reset Apm and when it armed it became to right and caused a c

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