Discussions

Hey folks,

I'm in the process of building my first quad.  I've been flying RC for just over six years, so I'm fairly well acquainted with most everything involved with a quad - save the FC.  I'm in the home-stretch and need some input from the experts here.

I've got everything mounted and the ESC's calibrated.  However I'm currently stumped on getting motor #3 to respond to the motors command.  The other three respond in the correct order (1, 4, 2), but then it skips three.  Motor #3 will run up correctly when the system is armed.  All 4 ESCs are matched Innov8tive Next Level 20A controllers, flashed with SimonK.

Here's what I've tried so far:

• Moving the motor ESC connectors to different ports on the APM 2.5 board - still skips the same motor
• Tried each ESC in motor position #1 for motors command.  1,4,2 all respond correctly.

I've also mounted the quad in a test-jig, and all four motors appear to run up just fine.  Inputs from my radio cause the quad to pull in the correct directions (roll, pitch, yaw, lift), but I'm hesitant to try free-flight without everything checking out correctly.

I've uploaded the following quick video to youtube:

http://youtu.be/xbEDRaGexfE

So what do you think I've missed / misconfigured?  

Thanks in advance!