I am having a little problem with my copter. I finally got it all put together, but for some reason only one of the motors arms. Its the rear motor. The others power on but they act like they are always getting a null signal. The other motors respond correctly if i put them on the pin that the one that is responding correctly is on. Does anyone have any idea why this might be happening?Thanks,Tommy
What are you using for the power distribution board?
What version of the code are you using?
You can test your board using the demo programs in the APM tutorial