The issue with the EFIS available on Droids at this time is they should not or can not be used as a primary display since the speed and altitude are derived from GPS, not from movement through the air. Blain, no schematic at this time. It would simply be based on the Stratux hardware, add pressure sensors and output to HDMI as a primary and since the code for outputting to Wi-Fi is there, that is usable too. The only mechanical work involved is the buffer/ controller for the sensors. I have worked with these plenty with Megasquirt engine controls but the Raspberry is new to me. I have assembled my Stratux which is as much as I know at this point.