"Strangely, I think I'm seeing the same thing happen to me in real life. Occasionally when I turn on the ardupilot, it will just turn the rudder completely one direction and it will lose altitude pretty fast (because it also spools down the throttle!…"

"Thanks for your help, everyone. In an effort to avoid spending much more money, we got ahold of a ferrite ring & used it on the wires coming in/out of arudipilot. That helped a bit but the thing that really did the trick was completely wrapping…"

"Thanks for the suggestion, Chris. I tried twisting up all the servo wires I could and keeping everything far apart (nothing transmitting inside, yet). Unfortunately I'm still getting heavy twitching. What's more is that it depends heavily on the…"

"I'm not sure if you'll find something like that available for free. Such programs will also be quite complicated to use and get a meaningful result. I use ANSYS ICEM CFD which is very expensive. If you can get your hands on it, though, it can do…"

"Hey guys,
I was fiddling with my board trying to upload sketches for a while and having no success. After a while (not sure exactly what I did to possibly cause this) when I plugged in the FTDI cable I got the message "USB Device Not Recognized" and…"