DragonFarm Controller

local modem = peripheral.find("modem");
local active = true;

modem.open(15);
redstone.setOutput("back", false);
redstone.setOutput("left", false);

while true do
  active = redstone.getInput("top");
  if active then
    redstone.setOutput("back", true);
    redstone.setOutput("left", true);
    sleep(3)
    redstone.setOutput("left", false);

    local e = {os.pullEvent("modem_message")};
    if e[3] == 15 then
      print("gotem");
      modem.transmit(43, 0, "done");
    end
  else
    sleep(1)
  end
end