Set up issues. One SD card works. Another doesn't

[mgrouch]

I have one BBN OS SD card working with pypilot. I think it was set up by Sean.
More recent version doesn't work.
PyPilot doesn't find motor controller although I can see it's probing /dev/ttyAMA0 port where controller is connected.
pypilot_hat also doesn't do anything when it starts on second SD card.

On the working image I see .pypilot/servodevice
and .pypilot/nmea0device configuration files. I can't find anything in docs about those files.
Here is content of those files.

Code:

cat servodevice
["\/dev\/ttyAMA0",38400]

Code:

cat nmea0device

["\/dev\/serial\/by-id\/usb-1a86_USB2.0-Serial-if00-port0",38400]

There is also whole ugfxfonts directory in
.pypilot

Nothing is said in docs about it.

Pypilot starts and shows heading fine in both cases.
However on second SD card image it doesn't find pypilot hat and even doesn't find motor controller.

We have included
/dev/ttyAMA0 into pypilot probing list. And disabled hci service to disable bluetooth.

Should we add

dtoverlay=disable-bt

into /boot/config.txt for pi4?

Any other clues to make servo and pypilot hat working?

We do have two SD cards. Config on another is working and config on second one is not fully working.
There is no (or we couldn't find) error messages in second case. IMU is fine. SignalK connection is fine.

Motor controller and HAT are not fine.


We are lost at this point.

Thanks for helping