Hello nice folks,
I have successfully "built" my first quad using:
Taranis Q7 X RC
r-xsr frsky receiver
diy-bought frame
speedy bee v3 f7 FC
Hobbywing skywalker 20A ESC (only PWM is recognized in Betaflight and Inav)
emax mt2213 with 10`` props
I could bind the receiver fine,
I can also speed up the motors in BF and inav well, single and all together,
motors have been assignec correctly and spin in correct direction.
However, the two motors in the rear dont break, i.e. stop spinning, after I set them to 0kv in BF/inav.
in BF & inav I can see for throttle, roll, pitch and yaw that the movement of the sticks corresponds fine. Ergo I am assuming the channels
and mode have been set correctly.
I was a bit unhappy that the ESCs only understood PWM and no dshot or even oneshot.
I left the PID settings according to default.
When I made my first flight attempts I observed
the following behaviour:
As sonn as the throttle stick was pushed up, the copter started wobbling, i.e. not all propellers started.
It usually is 1 to 2 motors that start spinning. I cannot take off and level, the copter has even flipped once.
Interestingly, when I move the pitch, yaw and roll sticks the propellers react correctly (front propellers e.g. in pitch back, rear ones off).
So the problem seems to be the throttle setting.
Here is the video:
I have tried fiddling with the PID settings but no improvement.
Since the problem occurs in both inav and BF I have the following suspicions:
1) ESCs too old, as I found out the skywalker is pretty old and made for fixed wing
2) ESCs calibration problem
3) false settings with throttle min (how can I change it is unknown to me) -> throttle min is too far below
4) PID settings false
5) channel problem with throttle
My extensive search has yielded no success so far.
Any help is much appreciated!
I have successfully "built" my first quad using:
Taranis Q7 X RC
r-xsr frsky receiver
diy-bought frame
speedy bee v3 f7 FC
Hobbywing skywalker 20A ESC (only PWM is recognized in Betaflight and Inav)
emax mt2213 with 10`` props
I could bind the receiver fine,
I can also speed up the motors in BF and inav well, single and all together,
motors have been assignec correctly and spin in correct direction.
However, the two motors in the rear dont break, i.e. stop spinning, after I set them to 0kv in BF/inav.
in BF & inav I can see for throttle, roll, pitch and yaw that the movement of the sticks corresponds fine. Ergo I am assuming the channels
and mode have been set correctly.
I was a bit unhappy that the ESCs only understood PWM and no dshot or even oneshot.
I left the PID settings according to default.
When I made my first flight attempts I observed
the following behaviour:
As sonn as the throttle stick was pushed up, the copter started wobbling, i.e. not all propellers started.
It usually is 1 to 2 motors that start spinning. I cannot take off and level, the copter has even flipped once.
Interestingly, when I move the pitch, yaw and roll sticks the propellers react correctly (front propellers e.g. in pitch back, rear ones off).
So the problem seems to be the throttle setting.
Here is the video:
I have tried fiddling with the PID settings but no improvement.
Since the problem occurs in both inav and BF I have the following suspicions:
1) ESCs too old, as I found out the skywalker is pretty old and made for fixed wing
2) ESCs calibration problem
3) false settings with throttle min (how can I change it is unknown to me) -> throttle min is too far below
4) PID settings false
5) channel problem with throttle
My extensive search has yielded no success so far.
Any help is much appreciated!
