Yes, you do need the interface and software to program the radian modules. Not exactly plug and play. If you're still interested I'd be willing to sell you a single radian and freefly servo for $300 shipped. You would still need to purchase the interface from Quadrocopter.com.
Black one. If you change your mind lemme know. Here's the y6 it was temporarily on - http://www.youtube.com/watch?v=IcLQkDFSHdg&list=UUOjKeUWjz-ELdhTJBnzj7dA&index=9
Please harshly critique this. I'm trying to learn. Solid mounted panasonic vid cam with no gimbal on a WKM Y6. Raw vid. Youtube stab is the only thing added. Thanks for feedback-
http://www.youtube.com/watch?v=4kQz-kybuiA&list=HL1336516101&feature=mh_lolz