Not a code problem but an architecture/infrastructure one.
I have a single board computer device (SBC) with an IP setup that currently chats to a laptop via a switch. All on a private network that can easily have more of these SBC added to enlarge the network. Ip addressing is not dynamic, each SBC has a fixed one.
That's the background, now I want to remove the switch (maybe), but mostly remove all the physical connections and have it wireless with a pretty broad range (like not meters but 100s of meters).
I don't want to offer up too many suggestions right away, I'd rather hear your ideas/product suggestions. Keep in mind that the SBC has minimal hardware connections so anything I could put on the end of an RJ35 would be ideal!