When I first got my Streamdeck, I programmed keys to fire off start commands to simple Python programs on the PC which modified parameters in the XP-Engine. For instance from clear to bad visibility or wind sundenly, basically to throw situations at myself on approachor turn on/off switches
I cannot find the code for the Python progs any more but I think I used an API (getDREF/sendDREF) from Nasa to talk to the XP engine with Python. All the Streamdeck butto did was to trigger the Python program. Also the concept works nice on Arduino and Raspberry
https://github.com/nasa/XPlaneConnect/wiki/XPC-Client-Reference
