ArduCopter pitch and roll drift issues. Please Help.

 

I am having issues getting my ArduCopter working.  Here is my setup:

APM Oilpan version Hotel 1.0

APM v1.0

Ublox GPS

RC2 Code

 

No Magnometer

 

It appears that the artificial horizon is not correct.  It drifts in both pitch, roll and yaw.  I have the dip switch settings with position 1 down an 2,3,4 up to fly in + mode.  SW2 on the board is set to 1.  I have tried multiple code versions and nothing seems to stabilize the artificial horizon.

 

Here is a video of the issue in the configurator.  Please note that the quad is sitting flat the entire time.  The horizon slowly moves, but when I flip back to the page with the accelerometer reading the values are steady.

 

 

It appears that the accelerometer values are not being used in the DCM???

 

Please help...

Tags: Drift, Pitch, Roll

Views: 143

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Replies to This Discussion

Permalink Reply by Hyon Lim on March 20, 2011 at 8:08am

Plase check the offset of the sensors.

Pitch, roll offset must be zero, z-axis value : 408 is proper.

You should adjust offset.

Permalink Reply by Sebastian Gralla on March 20, 2011 at 8:10am

accelerometer Z value should be around 408, not 0

check that, it should work

 

/edit: yes, like Hyon said

Permalink Reply by Jack Little on March 20, 2011 at 8:15am

That could be it.  I set offsets to zero all three x, y, and z.  I will try putting the the Z at 480 and let you know later today if that was it.  Thanks-

Permalink Reply by Jack Little on March 21, 2011 at 6:13pm
That was it! Thanks for the help!

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