Hi all, I am trying to configure my RPI 4 with my APM 2.8 via MAVLINK. However I am unable to connect RPI 4 and APM2.8 (telemetry port). I keep getting the message MAV> Link 1 Down whenever I type in: $ mavproxy.py --master=/dev/ttyS0 Here are the things I have done: - disabled bluebooth of my RPI 4...

http://wiki.ros.org/ROSberryPi/Installi ... berry%20Pi

this requires 2.6 but i keep getting errors along the way

I want to downgrade to Python 2.6 Rasbian - but there is no available code online. Anyone can help? Thanks in advance!