Have a look at this link to Dave Jones EEVblog channel.
A Sydney "enthusiast" about 15 - 20 years ago started to build his own full scale 747 simulator.
He succeeded with authentic 747 gear and some non-authentic gear.
Now he is building a new 747 simulator, using a REAL 747 cockpit.
The YouTube video is about construction so far, and at about 17:00 into the video they explain the use of Arduino, then the jump to their own bootloader and interface, but still keeping the PCB footprint.
A very interesting video to watch in its 25min entirety.
What intrigues me is that the test pilot learns to fly on the simulator before the first flight of a new plane !
Anyone who is interested in the 747 should read "Wide Body" by Clive Irving. I suspect it is out of print but probably available second-hand.
Boeing missed a detail on that last new plane simulator, otherwise they wouldn’t have had to crash a few to ground the fleet.
I “flew” some full motion sim boxes in the late 80’s and every time there was sweat even without the guy in back pulling make-something-go-wrong tricks.
The sim techs were so bored they’d fly under bridges inverted (no the box does not roll over, just the graphics) and show off quirks.
I think that after a while I’d be wanting something that could shoot, and opponents I could learn from.
I worked on some of the visuals on the Harrier GR7 dome simulator.
It was fascinating talking to the prime contractors, and the tricks they employed to make the experience as realistic as possible.
Although the 6 DoF platform could never invert, the real aircraft (and the visuals) could, so the seat cushion would inflate to push the pilot into his harness, to give the impression of falling towards the canopy during inverted flight.
The illusion was so realistic (briefly) that one pilot refused to simply unbuckle when the simulator crashed (in the software sense) inverted, fearing that he would fall out of the cockpit.
Aerobatics pilots learn to not trust their inner ear which way is up sense but instead go on visual and instruments.