[secant0give]

I've been putting together another SK450 with a HK Mega 2.7 controller. This is the clone of the Ardu-pilot that HK sells for an astoundingly low price

http://hobbyking.com/hobbyking/store/__5..._BARO.html

It comes with an on-board magnetic compass but seems to work much better with an external compass and GPS which comes as a simple plug in accessory.

Now this is a real flight controller!! it has so many features and is capable of doing so much. It can make the quad really easy to fly by using one of the numerous simplified flight modes and it can fly all by it self as well.

The thing I did notice with this controller is it has a great locked in feel when flying manually, it's almost like the stick is attached to the quad copter by some sort of invisible leaver !!.

Now I'm not a quad-copter flyer I've really only just started out tinkering with these SK450s but the difference between these two controllers is immediately very apparent not just in the realm of extensive features but in the feel of the way it flies.
It's little wonder that the Ardu type controllers controllers have featured in heavily at the front of the pack in UAV competitions and quad copter racing. They really are very impressive bits of Kit !!

Don't get me wrong I'm not bagging the KK2 controller it's a great bit of kit and it can be set up to fly really well and it's very good value and very it convenient to adjust it's setting.

Here's a link to the KK2 board

http://hobbyking.com/hobbyking/store/__5...644PA.html

Here's a video of the SK450 flying with the KK2 board on a still morning trying out some new lipos. It's pretty dam smooth.

http://youtu.be/Lj--FfNiYV8