I used to be super into flight sim building, when I was doing my ppl I helped the flight school build a new one, custom cockpit dashboards made of LCDs behind cutouts running on computers with Matrox triple-head cards. custom arduino based radios etc. then I was into custom plane designs, as xplane made that pretty accessible.
Left that community for quite some time after my dad was in a light plane crash and stopped flying but just a couple of weeks ago I installed the latest version of Xplane and I feel the bug growing again.
definitely want to get back into it and then this community was suggested.