Motor arms but won't spin

@anparkinson wrote:

I'm completetly stuck.

When I plug in my 4 cell Lipo my ESC beeps 4 times and the motor twitches. This is the only sound - there is no other tone after the 4 beeps.

Opening the throttle does nothing - the motor won't spin.

I've set ARMING_CHECK and ARMING_REQUIRE to zero in Mission Planner

Am I missing something?

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