Ardupilot can be put into Joystick mode which allows the user to manually control the vehicle in a similar way to the RC transmitter. Please note that Joystick mode is inherently more fragile than direct manual control via RC transmitter because it involves many different data links and components:
Joystick device –> UgCS client –> server –> VSM –> Ground Radio –> Air Radio –> Autopilot
If any of the above links fail, the joystick control is broken and the vehicle automatically goes into manual mode. (Loiter for copters and Stabilize for planes) This is why users should be very careful when working with Joystick control mode. It is recommended to have an RC transmitter as a backup controller.
Updated 9 months ago