"Hi Looke,

I tried to connect m8n to raspberry with SPI, I have got the same problem you had. Do you solve it?

Best regard,
Robert"

"Hi Adolfo,

I have added the sleep in rc.local. In my case I put the 20 in sleep. The serial2udp.py worked well.

Thanks.
Best regards,
Robert Adolfo Cobo said:
Hi Robert,
 you cannot remove the "python" part because both mavproxy.py  and…"

"Hi Adolfo,

When I run serial2udp.py by manual, the program run better with pi zero. the command is following:

pi@raspberrypi_z0:~ $ screen -d -m -s /bin/bash python /home/pi/serial2udp.py /dev/ttyAMA0 172.16.1.55 14550
Reading from serial port:…"

"Hi Adolfo，

My usage of Mavproxy is the same as yours. Thank you for your share. I will test it and give the feedback.

Best regards!

Robert"

"Hi Adolfo,

I met the same problem. Could you advise me how to put "return", which file involved.

Many thanks.

Robert"