diorite.lua

t = turtle

-- main loop
while 1 do

t.craft(4)

item3 = t.getItemCount(3)
item4 = t.getItemCount(4)

if (item3 > 0) then
    item = t.getItemDetail(3).name

    if (item == "minecraft:quartz") then
        t.select(3)
        t.transferTo(6, item3)
        print("quartz detected")
    elseif (item == "minecraft:cobblestone") then
        t.select(3)
        t.transferTo(5, item3)
        print("cobble detected")
    elseif (item == "minecraft:diorite") then
            print("diorite detected")
            t.select(3)
            t.dropDown()
            t.select(1)
    else
        print("Error: cannot add L to var 'ratio'")
    end

end

if (item4 > 0) then
    item = t.getItemDetail(4).name

    if (item == "minecraft:quartz") then
        t.select(4)
        t.transferTo(6, item4)
        print("quartz detected")
    elseif (item == "minecraft:cobblestone") then
        t.select(4)
        t.transferTo(5, item4)
        print("cobble detected")
    elseif (item == "minecraft:diorite") then
        print("diorite detected")
        t.select(4)
        t.dropDown()
        t.select(1)
    else
        print("Error: cannot add var 'L' to var 'ratio'")
    end

end
end