I built a X quadcopter with APM 2.6 with QUAR GPS COMPASS, during trake off is level and stable but once i pushing the yaw stick to left or right the copter will start spinning wont stop event let go the stick ( spinning follow the yaw stick push direction). i already did several time of initial calibration on the Missing Planer but still the same and PIDs also did some adjustment but also same result (spinning).
Is it the below info? and im have attached a log file, could you please help to review , cause i really no expert on review of the log data
Log File C:/Program Files (x86)/Mission Planner/logs/QUADROTOR/1/2015-01-25 00-41-27 45.bin.log
Size (kb) 84.9580078125
No of lines 1536
Duration 0:00:00
Vehicletype ArduCopter
Firmware Version V3.2
Firmware Hash c8e0f3e1
Hardware Type
Free Mem 0
Skipped Lines 0
Test: Autotune = UNKNOWN - No ATUN log data
Test: Balance/Twist = GOOD -
Test: Brownout = GOOD -
Test: Compass = GOOD - No MAG data, unable to test mag_field interference
Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = GOOD -
Test: GPS = FAIL - Min satellites: 0, Max HDop: 99.99
Test: IMU Mismatch = UNKNOWN - No IMU log data
Test: Parameters = GOOD -
Test: PM = GOOD -
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = GOOD -
It is working correctly, I thinking I found where is the problum is,
When I push yaw axis to left the motors 1 & 2 speed are slow than motors 3 & 4, I think these is normal to make the copter turn but the problum is after I let go the yaw stick the motor still runing in slow speed. I very sure this is the cause of the copter spinning. (Normally after let go the stick motor speed should go back all the same speed right).
If push the yaw stick to right the motor 3 & 4 speed will slow than motor 1 & 2 all the way even let go the stick. ( it is Same situation)
Do you have any idea where go wrong? Is that any setting on the apm 2.6. Or the controller?
Posting a dataflash log will help people diagnose your issue.
But yes with centre rudder stick the motors should return to spinning the same speed, in the air at least. they might not on the bench as the brain might have some desired yaw angle it can’t achieve until take off.
Then it could be a flipped compas ? Because if you will change your Yaw to left, and compass will read it otherwise ,ti will try to correct this error by more spinning causing error to grow.