What I am doing is building the upfront controller from a AV-8B Harrier, I have already built a keypad and I am using another board to handle all of my key presses. http://www.leobodnar.com/products/BBI-32/
The main reason for using the UNO was to control the LCD and the segments, I will be exporting data from the sim I fly to display real time data on the lcd / led's on my upfront controller
with luck lol
I am still going through a huge learning curve at the moment, so thanks for the help you guys have given me.
and I will take a look at your site, and keep it in mind as I slowly build.