Automate Reinforced Stone creation using a ComputerCraft Turtle.

reinforced_stone.lua

local POLLING = 2
local Sand = 'minecraft:sand'
local CFSpray = 'IC2:itemFoamSprayer'
local Scaffold = 'IC2:blockIronScaffold'
local Reinforced = 'IC2:blockAlloy'

local function SelectByName(name)
  for i=1,16 do
    local detail = turtle.getItemDetail(i)
    if detail and detail.name == name then
      turtle.select(i)
      return true
    end
  end
  return false
end

local function SelectByNameRobust(name)
  while not SelectByName(name) do
    print("Looking for ", name)
    sleep(POLLING)
  end
end

while true do
  SelectByNameRobust(Scaffold)
  turtle.place()
  SelectByNameRobust(CFSpray)
  if not turtle.place() then
    -- Reload
    turtle.dropDown()
    sleep(10)
    turtle.suckDown()
    SelectByNameRobust(CFSpray)
    turtle.place()
  end
  SelectByNameRobust(Sand)
  turtle.dropUp(1)
  while true do
    local success, data = turtle.inspect()
    if success and data.name == Reinforced then
      break
    end
    sleep(1)
  end
  turtle.dig()
end