Duper Controller

--Tnt Duper Controller
local protocol = "TNTDUPER";
rednet.open("top");
rednet.host(protocol, "duper");

function activateDuper()
    print("Activating");
    redstone.setOutput("back", true);
    sleep(.5)
    redstone.setOutput("back", false);
end

function server()
    while true do
        local from, message = rednet.receive(protocol);
        if message == "activate" then
            activateDuper();
        end
    end
end

server();