input1 = "44  44  44  44  "

for a=1,string.len(input1) do
                note=tonumber(string.sub(input1,a,a))
                if note ~= nil and note >= 1 and note <= 9 then redstone.setBundledOutput( "back",math.pow(2,note-1)) end
                sleep(.1)
                redstone.setBundledOutput("back",0)
                sleep(.1)
        end