I want to disable the beeping of the motor (beep-beep) before pressing the safty switch or arming and after disarming.
there is any option to disable it?
The beeping from the motors is a function of the ESC, not Ardupilot.
It is there as a safety measure to indicate the motor is live and has power but no PWM signal.
Maybe some ESC might exist out there that doesn’t but it is not a good idea.
It is a safety measure.