ComputerCraft Tutorial: radio_ctrl(turtle)0_1

-- ############################################
-- radio_ctrl  (turtle side)
-- version 0.1
-- http://hevohevo.hatenablog.com/
--   1. Refer to controller side program (http://pastebin.com/uJfWnku6).
--   2. Input to the following and reboot TurtleOS
--     > pastebin get 0ian5ggx startup

-- ################## config ##################
ModemSide = "right"
ControllerID = nil -- set id, if you need to restrict controller ID.

-- ################## main ####################
rednet.open(ModemSide)

function eval(str)
  assert(loadstring(str))()
end

while true do
  local sender_id, message, distance = rednet.receive()
  if not ControllerID or (sender_id == ControllerID) then eval(message) end
end