0 Cannot arm APM2 Posted by Grahame Harvey on March 27, 2012 at 11:54am After reinstalling firmware to over come motors chirping I cannot rearm,I have checked the switch position and throttle/yaw control values,Which LED COMES ON WHEN ARMED?Grahame You need to be a member of diydrones to add comments! Join diydrones Email me when people reply – Follow
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http://code.google.com/p/arducopter/wiki/AC_LED
I would first try lowering your throttle trim and see if it will then arm.