There u go made it easy and got rid of the other :] lol work has been slow been living on the forum recently. xDHis avatar must be the one he has, my explanation was straight forward. That Heli pic of yours just muddles things.
You need to bind your receiver to your transmitter. Your receiver(Ardupilot 2.5) should have came with a bind plug.I connect the wire correct but my fs-i6 transmitter not response with ardupilot 2.5 why? the receiver is powered but when I try to fly with trasmiter control nothing happens why?
Check all of your connections. Depending on your flight controller software you may need to select that it is a "x quad" if tricopter is the default. It's also possible that you have a bad ESC or motor. If your 4th motor is twitching you have a bad ESC and should uninstall it before something bad happens.guys I do it all all is ok but when I press throttle only 3 motors spin why?