RT1

rednet.open("right")
message = 0
print("Listening...")

function checkMessage()

  if message == "r" then
    turtle.turnRight()
  elseif message == "l" then
    turtle.turnLeft()
  elseif message == "f" then
    turtle.forward()
  elseif message == "d" then
    turtle.down()
  elseif message == "u" then
    turtle.up()
  elseif message == "D" then
    turtle.dig()
  elseif message == "Du" then
    turtle.digUp()
  elseif message == "Dd" then
    turtle.digDown()
  end
end


repeat
  event,p1,p2,p3 = os.pullEvent()
  if event == "rednet_message" then
     message=p2
    checkMessage()
    end
until event == "char" and p1 == "x"