Poor position of the quadcopter, I want to connect the u-center

hello

My quad sometimes behaves like a bad gps.

I’ve tried many things, but I suspect bad hardware.

The error during takeoff and landing is very large.

My quad, which was still, sometimes turns around on its own.
(It’s fine most of the time)

I want to check the status of the gps module by connecting u-center.

Is there a way to connect to u-center like this picture?

Pixhawk’s firmware is the latest version.

Yes, you can use Serial-Passtrough or UBlox documentation. The documentation explains it AFAIK. And mission planner also has a SLCAN passtrough function in the CAN tab

https://ardupilot.org/copter/docs/common-serial-passthrough.html

is this page correct? Or is the parameter name USB-Passthrough?

Try from the Control-F menu in Mission Planner, there is a function button there. It might work.

is this what you’re talking about?

The menu called “usb-passthrough” is not visible.

Additionally, I already read the forums about “MAVSerial pass”.

It’s not working…

I also found other posts on the discuss.

I also touched the serial_pass parameter, serial_baud, serial_function, etc.

Can you tell me the right setting or method for neo3 pro?