Hello, fellow Arduinonauts!
I'm currently developing a project for Airsoft players, an electronic scoreboard with mode selector and such in it.
Another feature is "Capture the point" where I'm making some pillars with buttons and RGB-LEDs, now what i need now is to find a way to make these pillars talk to my scoreboard.
if they were next to it would be super simple, but the tricky part is that this field is about 400 meters (~1.090 feet) across and i need some transceivers that can cover that distance..
OR!
if some of you brilliant people have a better idea (wireless or the like without cables/wires preferably) as to how i do this, i would be so very happy 
High Five, Pandaionic.