First of all, I appreciate the amazing response to my question! I will certainly fully investigate each response, so thank you for taking the time to write. Second, to clarify, I was intitally hoping to have functionality similar to the futaba. I'm also not familiar with coordinated turns, but I think I get the idea =) In the end, somethign to help stabilize turns would be quite useful indeed. In fact, though, fully-autonomous flight seems to be quite a way off, so for now we are hoping to start with just a circuit using the PIC to level the wings with respect to horizontal during what is intended to be, level flight, no turning or anything like that. Thanks again, Wade -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu