QUAD Pitch Issues

Greetings,

 

I am in need of some expert advice.  My Quad does not want to level out correctly and I am suspecting that I may have a problem with my hardware.

 

I have tried multiple versions of code. Arducopter RC2, ArduPiratesNG, and ArduCopter SuperStable.  I have also tried X and + configs and I get the same results every time.  

 

My problem is that the Quad wants to fly backwards all the time.  Radio trim will fix this, but it takes FULL trim to do it.  After using that much trim, I no longer have enough thrust for forward fight.  The Quad will slowly start to move forward, but the 'level' its self out and goes back to hover, even with the tx stick full forward.  

 

I have tried to adjust the accel offsets and I get the same outcome.  The Quad will fly level, but forward flight will be crippled.  All other directions work fine.  I have attached a video that shows the attitude the quad takes.  It was filmed after a fresh upload, eeprom reset, imu cal, mag cal, tx cal, and with known good pid values.

https://www.youtube.com/watch?v=V3FDRMt3Z_0

 

 

I have also attached the results of the tests found in the APM code. 

gyro.rtf

adc.rtf

imu.rtf

Please let me know if I can provide any other info.

 

Thanks!

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Replies

  • 3D Robotics
    Your data looks normal to me. Maybe one of your ESCs needs calibrating or a motor/prop is on wrong?
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