mavlink servo_output_raw_t refresh rate

hi all,

I have been working on a university project and part of the project evolves analyzing how the pid tuning effects the efficiency of the quad rotor. To do that I need to log the signal going to a motor on a stable hover with different pid settin

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yawing around a fixed axis

Is there any simple way to get the autopilot on a quad copter to go to a way point, stay in positon and yaw 360 degrees before going to the next way point.

I want to take a 360 video of the way point.

I am using arducopter 3.0.1 firmware on APM 2.5  an

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Blades continue to spin after crashing

I have been practicing landing the arducopter for few days now, I fly it over thick bushes to keep it safe from being destroyed on hard crashes.

However I noticed that on hard crash landing specially when the quad falls upsidedown, the rotors keep spi

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