Wonder if anyone can help shed some light on whats happening here.
Just built my 2nd arduplane (also have 3 quad builds under my belt now) but having some very strange behaviour.
Changed the APM2.5 board from a quad to a plane and just about to finish the build. Did a eprom erase and reset before loading latest v2.4b plane onto the board. Wired up Rx and servos as usual. BEC powering the APM and ESC powering the servos.
However, when I power up the board, i get all 3 ABC lights come on,
A and C flash as expected .
Then get a solid blue when GPS locks.
B (yellow is on constantly)
C (red never lights up)
Via telemetry radio , I can connect but it instantly arms. raise throttle and motor spins.
The rest seems to be working as you would expect, but I cant disarm and no idea why its automatically arming.
Am i missing something very easy here??