I am running this on my test setup and using the image from the link from this thread.
I am currently trying to work out what
system(‘screen -S mavproxy -p 0 -X stuff “param set GPS_TYPE 14^M”’)
from nmea_receiver.py incase I need to set something before trying to send data.
I will read the link to the code you have just sent.
This is all a learning process for me so I can understand the nuts and bolts of the system