Pypilot - Motor Driver for Rudder actuator

[seandepagnier]

I think multiple programs are trying to access the serial port at the same time which pypilot needs for the motor controller. This is rare because most pypilot systems use the hardware serial /dev/ttyAMA0 for the motor controller not usb.

Anyway, possible programs that access serial ports:
opencpn
signalk-node-server
avnav
gpsd
pypilot
some openplotter scripts
a multiple instance of one of these