How does F405 V4 FC use servos via Betaflight?

1. Wiring.

If you need to use multiple servos, you can connect to the m5-m8 pad of FC and map it.

For example, three servos are needed, and the servos are connected to the three pads of s9, m5, and m6.

NOTE: The 5V BEC on F405v4 supports a maximum output of 5V 3A. Please ensure that the power consumption of the servos does not exceed the output of the flight controller BEC.

2. Settings.

（1）Please check the firmware version of your flight controller.

If you are using betaflight 4.4 or above, please select the "SERVO" option during firmware flashing to enable servo functionality.

（2）Please enter the following into the CLI:

resource PWM 1 none

resource MOTOR 5 none

resource MOTOR 6 none

resource SERVO 1 B15

resource SERVO 2 C08

resource SERVO 3 C09

save

（3）Please enable SERVO_TILT on the Configuration page of the Betaflight configurator.

（4）Set the corresponding remote control channel on the Servo page.

（5）After the setting is complete, you can select: "Enable Live mode" to check whether the servo is rotating normally.