tinkers

local sodes = {"back","top","right"}
while True do
    ind = read("port id : ")
    sleep(3)
    drain(tonumber(ind))

    sleep(10)
end
function drain (index)
    side = sides[math.floor(index/13 + 1)]
    color =  2^((index-1)%13)

    redstone.setBundledOutput(side,color)
    sleep(2/20)
    redstone.setBundledOutput(side,0)
end