startup

-- monitor redstone inputs and broadcast
-- as required.

-- front = blue line
-- left = red line
-- back = orange line
-- right = green line

-- initiate the wireless modem
rednet.open("top")

while true do
  os.pullEvent("redstone")

  -- check all inputs, broadcast as required
    if rs.getInput("front") == true then
      print("BLUE LINE ACTIVATE!")
      rednet.broadcast("station_blue")
    end

    if rs.getInput("left") == true then
      print("RED LINE ACTIVATE!")
      rednet.broadcast("station_red")
    end

    if rs.getInput("back") == true then
      print("ORANGE LINE ACTIVATE!")
      rednet.broadcast("station_orange")
    end

    if rs.getInput("right") == true then
      print("GREEN LINE ACTIVATE!")
      rednet.broadcast("station_green")
    end
end