Pixhawk yaw issues on Octo keeps turning left

hello guys,
first time posting in the forum mainly because this is the first time I’ve had any issues out of the pixhawk. go easy on me if this is an easy fix. I love this little thing but it’s got me scratching my head on this one.

i have an Rctimer s1100 pro setup with pixhawk, x8r sbus, taranis with opentx latest firm. I bought it all from a guy that had it set up and ready to go. in the beginning I had a small yaw turn to the left but found one of my rctimer esc’s capacitors had fell off. there are 2 on each esc board. I thought that would be the issue for the turn. fixed that and everything seemed to work ok. just every once in a while the issue of yaw turn.

a week ago my taranis crashed. turned it on, blue screen light up and that was it. had to pull the battery for it to turn off. so for the last week solid I have had to learn how to set the taranis back up never doing it before. HAIR PULLING EXPERIENCE!!! so that’s all fixed and I was able to get my flight modes. stabilize, alt hold, loiter and RTL. I can’t seem to figure out how to set up any more, like land. I really liked the land function!

testing today to make sure everything is working correctly. recalibrated the esc’s, same with the TX through mission planner. everything started up great, lifted off great but had a yaw problem. there is a slow turn to the left and I am having to input about 50% right input to get it back to heading. landed, hooked backup to mission planner and increased stabilize yaw P from 4.5 to 5.5. same issue. no change. I am afraid to go any further in the settings. don’t want to crash. can anyone help me out? I have done a few searches over the net but about the only conclusion I can come to is that I need to do the auto tune again. would that correct the issue? sorry for such a long post.

thanks! glyn

@glint,
How about providing tlogs and/or dataflash logs to help troubleshoot your issue.
Regards,
TCIII GM

ok… hopefully i uploaded the correct thing. thanks for the help!

Anyone?

@glynt,
Here is an Auto Analysis of your dataflash file:

Size (kb) 1833.12890625
No of lines 25453
Duration 0:01:51
Vehicletype ArduCopter
Firmware Version V3.2.1
Firmware Hash 36b405fb
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 - mag_field interference within limits (6.89%)

Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = GOOD -
Test: GPS = GOOD -
Test: IMU Mismatch = GOOD - (Mismatch: 0.18, WARN: 0.75, FAIL: 1.50)
Test: Parameters = GOOD -
Test: PM = FAIL - 9 slow loop lines found, max 8.48% on line 23716
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = GOOD -

Auto Analysis did not detect any issues. You need to review the log for various parameters to see what might be causing your issue.

Regards,
TCIII GM

crud… i was hoping you guys could find something wrong. i will go back through everything, calibrations and make sure everything is level.

thanks for the reply. i really appreciate the help!