Augmenting multiplayer game with wifi hardware controller

Is there any way to add a Wifi hardware client (in my case an esp8266 client module) to a standard multiplayer game as a client? Given that it can’t run an actual compiled Unreal engine client, I would just want to send basic variable information back and forth.

I could always write a separate server on a different port just for these devices to connect to (there are multiple) but I don’t like the extra overhead. I’d much rather make them clients of the existing multiplayer server used for the standard multiplayer game clients.

Any thoughts?