Arducopter Xbee EMI Choke
Channel: Random Denver
Date: 2011-11-26

I was getting tons of interferance from my Xbee module on my Arducopter, and moving it into a different position didn't seem to help.  This is my solution.

I was worried that the magnetic field from the toroid might mess with the magnetometer but I only get 1-2 degrees of drift if the toroid is on top of it.  It looks like as long as there's a least 1/4 of an inch of distance between them there's no impact.

There is a little more information on this on the diydrones forum, here: http://diydrones.com/forum/topics/arducopter-2-0-50?commentId=705844%3AComment%3A717179