I have noticed that many people in Europe are engaging in the building of flight simulator cockpits using Microsoft Flight Simulator, XPlane, and/or Project Magenta software. I recently came across a product at Simflight.com, that allows you to use your spare PC's to display instruments, and to poll up to eight PC's per game port...giving you 24 potentiometers, and over a hundred button combinations per PC. Sewell has a USB to game port adapter, which puts 4 game ports on a single USB interface...and they advertise it for "getting your old joysticks out of the attic" type of applications. Anyone with a little electronics know how can use this as an IO system for a very complex cockpit.
Most keyboard emulators run over $300 
, whereas the Sewell adapter is $23.

Is there any interest in the USA for this hobby? If so, I would like to get in touch with you, and share information, but I am only interested in people who are willing to be serious about the hobby....
