Pixhawk problem with motor spinning and radio calibration

ArduCopter Copter 3.3
1

Hi guys,
I am setting up PIXHAWK on Tarot T810 .and i have few Problems with this Controller .
1- Radio calibration
After calibration in QGroundcontrol ,Radio calibration section it shows throttle is not at zero point.

2-After armed ,when i move up a bit throttle stick , the motors without input increase spinning and sometime 1 or 2 motors stop spinning.

[youtube]https://www.youtube.com/watch?v=j8EouqI-9R4[/youtube]

[youtube]https://www.youtube.com/watch?v=KnYGLUL61pY[/youtube]

2

@medusa,
The issues you are experiencing are most likely not hardware issues.
What version of ArduCopter firmware are you using?
What version of Ground Control software are you using?
Regards,
TCIII GM

3

I used Qgroundcontrol 2.8 and 2.7
and and firmware which i am using for Pixhawk that the Qgroundcontrol programs the control board. :ugeek:

4

[quote=“TCIII”]@medusa,
The issues you are experiencing are most likely not hardware issues.
What version of ArduCopter firmware are you using?
What version of Ground Control software are you using?
Regards,
TCIII GM[/quote]

Could you please help me about pixhawk board?
1-which software should i use for GCS?
2- which firmware is the best for pixhawk?

5

medusa
Have you made any progress?
Are you sure there are no throttle curve set in your transmitter?
Have you performed an ESC calibration?

6

[quote=“ACPUK”]medusa
Have you made any progress?
Are you sure there are no throttle curve set in your transmitter?
Have you performed an ESC calibration?[/quote]
the problem was when i programmed it with Qgroundcontrol ,ESC calibration did not work .

I did calibration now it seems good on throttle and all motors start at same time .but when i move up throttle stick after 3rd line on transmitter all motors start.(there are few line beside stick). :open_mouth:

7

Medusa,

[quote]Could you please help me about pixhawk board?
1-which software should i use for GCS?
2- which firmware is the best for pixhawk?[/quote]

I would suggest to you to run missionplanner and arducopter v3.3.1, which is the current stable release.

When you test your motors, what was your current flight mode? Have you went through all the setup process?

8

[quote=“tabascoz”]Medusa,

[quote]Could you please help me about pixhawk board?
1-which software should i use for GCS?
2- which firmware is the best for pixhawk?[/quote]

I would suggest to you to run missionplanner and arducopter v3.3.1, which is the current stable release.

When you test your motors, what was your current flight mode? Have you went through all the setup process?[/quote]

Hi Tabascoz,
After 2nd calibration ,it is fixed.
Thanks

9

one more question about Roll - Pitch - Yaw

When i move YAW Stick to left or right to make order to Pixhawk for turn hexacopter CW or CCW , the copter keeps turning one-side slowly.
But i know when i release stick, the copter must stop turning around yaw axis.

10

This could be either the compass not calibrated properly or magnetic interference from motors.
Or it could be the yaw PID rates not set well for your helli.
Or it could be the compass not aligned.
Is your GPS / external compass up a height away from power wires, ESCs and motors? Looks as it is from video.

11

[quote=“ACPUK”]This could be either the compass not calibrated properly or magnetic interference from motors.
Or it could be the yaw PID rates not set well for your helli.
Or it could be the compass not aligned.
Is your GPS / external compass up a height away from power wires, ESCs and motors? Looks as it is from video.[/quote]

Thanks
I :sunglasses: think i should make distance between the GPS and power wire.

12

Mind also that the motors should be assembled perfectly aligned with the frame. Any motor pitch could cause odd behaviour on yaw control. I happened with my frame.