I am new to drone programming, I try running takeoff-and-land.py and method connect(connect-string, wait_ready=True, baud=57600) give me warning
Link timeout, no heartbeat in last 5 seconds following with dronekit.APIException: No heartbeat in 30 seconds, aborting.
the command is python3 takeoff-and-land.py --connect=’/dev/ttyAMA0’
I am using raspberry pi 3 B and Navio2. Mission Planer is able to connect to drone using com3.
I installed python3.5 and dronekit-2.9.1.
thanks a lot in advance!