The BT-1 8-Channel FPV Joystick is capable of interfacing with your transmitter (via trainer port) with the included FPV control box, and allows you to control up to 8 channels independently. There are 3 proportional channels, and 5 on/off channels. The BT-1 offers you the ease of flying your FPV model with just one hand.
Features:
Ergonomic design
Throttle lever for smooth, easy throttle control
Easily accessible trigger and function buttons
Price is US$ 99.32 (but may be lower after logging in onto the Hobbyking website or after waiting for a pop-up with a one-time-offer).
More information: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=17165
Comments
It is much more capable, able to handle more channels and is compatible with most joystick/radio combinations.
The HK system does not have enough channels and I do not believe that is a true top-hat which is great for pan/tilt camera control.
http://www.endurance-rc.com/pctx.php
this is cool, the way forward :-)
3 proportional channels isnt enough. 4 should be a minimum and 5 or 6 would be ideal.
manual available for download here