I think the quad may be a little tail heavy, not nose heavy. APM is a bit in front of the CG.
So the two events seems different to you ? There no single failure ?
"Well, please correct me if I am wrong, but switching from althold to stabilize when the throttle stick is near zero is usually a bad idea. If your THR_MID is set properly, your copter hovers in stabilize when the rc channel is near 1500, not near…"
"If you want to refer to 3.2-rc1, the link I provided is the right one. The other more recent build weren't released as such and are "work in progress", not guaranted to work"
"Is there a special setting to replicate the status of the internal LED ? I ask because I already connected the BlinkM and all I have is a changing color LED that goes from red to blue to green to white and repeat (maybe not in that order ;) )"
"By the way, this circuit works with the Pixhawk if you plug it in the SB input and set RSSI_PIN to 103 (ArduCopter 3.1.2-rc1). RSSI_RANGE set to 3V
It could be added to the Wiki"
"I had something similar with the APM. It appeared that the voltage of the USB port of my notebook was too low. I tried with my desktop computer and it worked fine."
"I also have these empty kml files with APM Copter 3.1 rc7. It is apparent that the GPS messages format changed since APM:: Copter 3.0.1 and mission planner is not able to cope with this change, even if the new format is described in the header of…"
"Yes, this is the PRO QUAD, with 25mm arms. I choose the 325mm version.
The gimbal is a RustiCWave gimbal mounted under an UAP damper kit. All this is attached to the Jakub plates through 4 nylon spacers and standoff. I had to remove the biggest…"