I'm a pilot - the bug masher kind flying general aviation. I use a pi with a couple USB digital radios and wifi to read adsb weather and other aircraft locations when flying, adding it to the moving maps on a tablet. The stratux project (http://stratux.me) started off as a bit of interesting hacking on reddit, and really took off into a mature bit of software/hardware. This does almost everything the $800+ stratus does for pennies on the dollar.