It offers two flight modes which can be remotely selected from your transmitter, even while in flight:
- Auto-Stabilization Mode: In this mode the FY-901 will utilize the 3-axis accelerometer to self level your aircraft
- Standard Mode/3D Control Mode: In this mode the device will utilize the 3-axis gyroscope to sense roll velocity and flight attitude while you keep control for aggressive 3D manouevres.
The flight controller has support for 4 speed controllers. You can configure it for flying in "X"- or "+"-mode as well as for Y3 copters through the switch on top of the casing. The gain screw allow to set gyro gain.
For more information, you can download the manual here: http://shop.fyetech.com/dl/fy901.pdf
Price for the FY-901 controller is US$ 89.00 and it is available from Hobbyking: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=...