Start the drone turns around yaw axis turning to the left

ArduCopter Copter 3.1
1

hi,
I built a f550 6 engines with firmware 3.1.5 in an APM 2.6, I calibrated accelerometer, compass, radio. the problem is finding that start immediately after the gas giving armed drone tends to turn to the left along the yaw axis. correcting after several corrections with the radio the problem seems to be resolved. The sensor data see from mission planner but same ok. someone would know tell me why this happens?

2

@Alfadroid,
Please provide tlogs and/or dataflash logs to help troubleshoot your issue.
Regards,
TCIII GM

3

@TCIII
thanks for reply, I try to dowload all the log from apm, this is the last log that i’ve test this problem with yaw axis.

Thanks

Manuel

4

Iv’e tray to upgrade from 3.1.5 to 3.2.1 FW, the problem remain, someone can tel me what is the problem?
Thanks

I post the datalog.