I didn’t find anything regarding MiraCast in the forum, but it would be cooul if it would work somehow.

As I am using the pi for other things too (MiniDLNA, Homebridge, etc…) it is not located in the frames of the mirror. For this reason I am looking for a wireless solution, instead of connecting the monitor with HDMI.

Is it possible to use for example miracast?
it can be bought from China just for 10 Euros…