That is definitely possible. I don't work with FPGA's though so I won't be able to help.
It uses a listed power supply and everything else is current limited low voltage. Yes, all the wire we sell is FT4 rated. Check with your local codes but I have never seen any area that requires low voltage electronics to be mounted in an electrical box.
Good to hear.
Good luck on your project.
To do it the same way I did you would need to find one that is not isolated.
We don't sell it yet but it should be done soon.
Glad to hear they worked good for you!
You can make your own or use something like this.