make a connection on the pi4 opencpn to the pi3's ip and port
i have done similar on a laptop getting data from the pi
"The Moitessier HAT does not quite fit on the Pi 4"
http://forum.openmarine.net/showthread.p...86#pid9286
http://forum.openmarine.net/showthread.p...98#pid9298
i have done similar on a laptop getting data from the pi
"The Moitessier HAT does not quite fit on the Pi 4"
http://forum.openmarine.net/showthread.p...86#pid9286
http://forum.openmarine.net/showthread.p...98#pid9298