This mod was derived (and significantly rewritten) from my Nixie Tubes mod.
Simply place a panel, right-click it, set a channel, and connect it to a Mesecons LuaController via digilines bus wires or digi-mese.
Then send a character, a string, or one of several control words to that channel from the LuaController, and the mod will try to display it. The panels use the standard full ISO-8859-1 character set, plus lots of additional symbols.
All panels emit a small amount of light when displaying something.
The panels only mount on a wall.