Here is a turorial I made for making homemade sealed Hall pots for cheap (~$5 each). Put away the hard drive parts and build something befitting of an aircraft...http://imgur.com/a/WkQtw
Leo's boards are fine and dandy, but you can do better (particularly with Condor) by gutting a Thrustmaster T16000 ($40). It's 16bit (Leo's is 10), has enough inputs to control every function of Condor, but more importantly is able to be controlled by TARGET, Thrustmaster's kickass software for programming a few of their nicer products (Warthog, Cougar). With TARGET, you can program an analog axis to output digital events, and this is key for Condor. The flaps never got anything more then +/- to raise/lower them. This will leave you with either lame solutions (still pushing buttons) or complicated ones (mechanical thingy to push correct buttons during lever travel) or an easy one like you can easily do with TARGET. An axis is simply programmed to generate the correct number of '+' pulses one direction, and the correct number of '-' pulses the other.