Generator Crafter

chestFull = false

function fillSlot(slot)
    turtle.select(slot)
    while turtle.getItemCount() < 16 do
        turtle.suck(16-turtle.getItemCount())
    end
end

function emptyInventory()
    for i=1,16 do
        turtle.select(i)
        item = turtle.getItemDetail()
        if item and item.name == "ic2:blockgenerator" then
            dropped, message = turtle.drop()

            if not dropped then
                chestFull = true
                return
            else
                chestFull = false
            end
        end
    end
end

function craftGenerator()
    turtle.select(2)
    while turtle.getItemCount() < 16 do
        turtle.suckUp(16-turtle.getItemCount())
    end

    turtle.turnLeft()

    fillSlot(6)

    turtle.turnRight()
    turtle.turnRight()

    fillSlot(10)

    turtle.craft()

    turtle.turnLeft()

    emptyInventory()
end

while true do
    while redstone.getInput("back") and not chestFull do
        emptyInventory()
        if not chestFull then
            craftGenerator()
        end
    end
    sleep(1)
end