AP: PreArm: Throttle (RC3) is not neutral issue occurred

ArduCopter
1

Hello All,

I’ve played with SITL and QGC.
Build and run SITL works fine, but 2nd flight always occurs in error.
The issue said that “AP: PreArm: Throttle (RC3) is not neutral”, but I can’t find any solution for this issue.
Does anyone help me out?

Sincerely,

2

Use this command in mavproxy:
rc 3 1000

3

Thanks for the reply.
I commanded as you said, but it didn’t work.
I attached the log below.

STABILIZE>
STABILIZE> rc 3 1000
STABILIZE> Got COMMAND_ACK: REQUEST_AUTOPILOT_CAPABILITIES: ACCEPTED
Got COMMAND_ACK: SET_MESSAGE_INTERVAL: ACCEPTED
Got COMMAND_ACK: REQUEST_PROTOCOL_VERSION: UNSUPPORTED
AP: ArduCopter V4.2.0-dev (12e1f673)
AP: 31ef74d75e634d4ab838411126f80396
AP: Frame: QUAD/PLUS
Got MAVLink msg: COMMAND_ACK {command : 11, result : 0, progress : 0, result_param2 : 0, target_system : 255, target_component : 190}
GUIDED> Mode GUIDED
Got COMMAND_ACK: COMPONENT_ARM_DISARM: FAILED
AP: PreArm: Throttle (RC3) is not neutral

4

I found why issue is occurred.
Virtual Joystick in QGC is the one that occurred.
Please uncheck the auto center throttle.

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