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hello, thanks for looking. i built a quadcopter for a friend, and it wont fly right. here are the specs:
- frame= homebuilt pvc, 730mm diagonal, X config.
-motors= emax 450mm quadcopter como from readymade rc, 2213 935kv
-ESC's= emax 450mm quadcopter combo from readymade rc, emax simon series 20A
-props= included in combo, 10X4
-flight controller= CC3D with openpilot
-RX= orange RX 615 6ch dsmx
-TX= little non computer eflite remote included with sport cub s (also have my dx6i)
-battery= venom 5400 mah 3s 20c
-lights= getfpv.com led strips
some cheap little power distribution board
all up weight= 1.6kg
the build: motors are screwed to the pvc, ecs's bullet connected on, esc's soldered to the power distribution board, one of the BEC's from the ESC's is powering the FC, the others are connected only via ground and signal. rx is plugged into FC via pwm wires, fc is mounded almost directly on top of the power dist. board, lights all wired to the power dist. board,.
ok, the problem: it flies OK until i add a yaw input. pitch/role is a little wobbly, but ok. right yaw is very slow and causes some pitch/role drift. left yaw causes a severe pitch/ role reaction to the front left, but does slightly yaw. also, sometimes such severe oscillation get started, all i can do is drop the quad to the ground at the right time. i at first suspected the flight control board, a CC3D "evo", as it acted a little odd in the programming stage (saved settings through a upgrade/erase cycle, etc.) i ordered a new FC, and have the exact same problem. i also suspected that i was picking up interference from the motors, as the FC was in perfect plane with them. i put a little box under the FC and had the same problem. i tried a bigger box, separating the RX and FC, and some aluminum foil over the power distribution board. i suspect maybe it could be magnetic interference off the power dist. board? aluminum foil as it is non ferrous would have no affect against this??? i also (with the original FC) tried my dx6i, as well as a different RX. please help me, i made big promises about this quad, but it looks like i might be keeping it, (and paying for the parts) i can not think of what the problem could be, so i home someone reading this can tell me, or give me things to try. oh, i did try plugging the ESC's directly into my RX, and the motors seem to spool up normal. thanks for the help,
Leo
P.S. while i can keep this thing in the air, it will be going to a total beginner, so anything but perfect flight is unacceptable.
- frame= homebuilt pvc, 730mm diagonal, X config.
-motors= emax 450mm quadcopter como from readymade rc, 2213 935kv
-ESC's= emax 450mm quadcopter combo from readymade rc, emax simon series 20A
-props= included in combo, 10X4
-flight controller= CC3D with openpilot
-RX= orange RX 615 6ch dsmx
-TX= little non computer eflite remote included with sport cub s (also have my dx6i)
-battery= venom 5400 mah 3s 20c
-lights= getfpv.com led strips
some cheap little power distribution board
all up weight= 1.6kg
the build: motors are screwed to the pvc, ecs's bullet connected on, esc's soldered to the power distribution board, one of the BEC's from the ESC's is powering the FC, the others are connected only via ground and signal. rx is plugged into FC via pwm wires, fc is mounded almost directly on top of the power dist. board, lights all wired to the power dist. board,.
ok, the problem: it flies OK until i add a yaw input. pitch/role is a little wobbly, but ok. right yaw is very slow and causes some pitch/role drift. left yaw causes a severe pitch/ role reaction to the front left, but does slightly yaw. also, sometimes such severe oscillation get started, all i can do is drop the quad to the ground at the right time. i at first suspected the flight control board, a CC3D "evo", as it acted a little odd in the programming stage (saved settings through a upgrade/erase cycle, etc.) i ordered a new FC, and have the exact same problem. i also suspected that i was picking up interference from the motors, as the FC was in perfect plane with them. i put a little box under the FC and had the same problem. i tried a bigger box, separating the RX and FC, and some aluminum foil over the power distribution board. i suspect maybe it could be magnetic interference off the power dist. board? aluminum foil as it is non ferrous would have no affect against this??? i also (with the original FC) tried my dx6i, as well as a different RX. please help me, i made big promises about this quad, but it looks like i might be keeping it, (and paying for the parts) i can not think of what the problem could be, so i home someone reading this can tell me, or give me things to try. oh, i did try plugging the ESC's directly into my RX, and the motors seem to spool up normal. thanks for the help,
Leo
P.S. while i can keep this thing in the air, it will be going to a total beginner, so anything but perfect flight is unacceptable.