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APM output problem

I found one of my motors is always beeping ( the one connected to ch4 output, I did ESC and radio input calibration).

Then I measure the voltage of ch4 and chs 1,2,3 with transmitter off.

I found the voltage of ch4 is 1.7 volt lower than ch1,2,3. Is th

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Arducopter Arming Problem

Newbie Question - Please Help

During my initial setup, arming sequence was throttle stick to bottom right corner. Now all of a sudden the arming sequence is done by going to top right corner and dis-arming is top left corner.

What did I do wrong and ho

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ArduCopter 3D camera mount

Hello,

I am incredibly new to the ArduCopter scene (in fact I only built my 3D quad yesterday and am still waiting for the liPo and Tx/Rx controller to arrive) and would like to mount a small compact camera to my ArduCopter. Can anyone tell me whether

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ESC breaking?

I noticed that when I cut the throttle the motors stop very quickly. And when the propellers are still (while power is on) and I hit them with the finger they does not spin any turns (like when power is off).

This leads me to think the ESC has breakin

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