@pmusto wrote:
Hello,
I am hoping someone can help as I am completely stumped!
I have self-built a hexacopter with the following specs:
Emax MT2216- 810KV motors
Spider 20A ESCs re-flashed with BLHeli Blu20A firmware
Pixhawk clone flight controller
Turnigy i10 Transmitter and receiver running PPM, plane modeI have carefully calibrated accelerometers, compasses, radio and ESCs using both mission planner and without. Checked the range independently using an Afro ESC USB interface to confirm it is between 1020 and 1996ms, which is what mission planner gets.
When calibrating the ESCs (straight through mode) the motors operate uniformly and accelerate proportionally to the throttle input.
The problem occurs when the Hex is armed normally. The motors start to spin on arming (slightly faster than I would like), but as soon as I introduce any throttle the motors start to accelerate disproportionately and then it flips over and usually trashes a propeller or two. I have tried various settings for throttle but nothing seems to help. I have attached the flight log of the copter tethered to a board and only just enough throttle to start (ie maybe a couple of mm on the stick) and the motors accelerate to probably 1/2 -3/4 max speed? I will also attach the parameter file as it is currently. This hex certainly will not fly as it is and I'm at a loss what to do next. Please help!
Many thanks
Patrick.2016-05-18 21-55-57 37.bin (603.6 KB)Hexacopter 180516.param (8.6 KB)
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