I have this string of DC yard lights out front and I want to use some Arduino stuff to control them individually. My problem is that for various reasons I can't touch the DC line that feeds them.
So I have two wires carrying around 24v DC to work with and that's it.
I know wireless is the obvious solution, but I'm not interested in that right now. (And I, I chose the the road less traveled by)...
My question is, is there any easy way to modulate, say, a 2400bps onto that line short of gutting like 10 ancient modems?
Going for small and compact here.