Can reproduce with latest navio2 raspbian image as well as with latest arducopter binary installed which has version 3.6.8 Looking at the tcpdump sudo tcpdump -n udp port 14550 -X the arducopter spams messages (edited for clarity): GPIO_Sysfs: Unable to get value file descriptor for pin 4. GPIO_S…

Arducopter spams GPIO related mavlink messages

system (system) Closed November 5, 2019, 6:22am 16

You can check out the new image for Navio2 that solves the GPIO_sysfs error. The details are in this thread: