Computercraft 1.7.10 Alchemy Automation - Turtle

local COMPUTER_ID = 21                  -- ID Of Computer That Acts as a Logic Controller for the Turtle
local WIRELESS_MODEM_SIZE = "left"      -- Side that has Wireless Modem Equipped
local ANTENNA_SIDE = "right"            -- Side of Turtle that has the duck antenna from openperipheraladdons equipped

rednet.open(WIRELESS_MODEM_SIZE)                -- Opens Rednet Communications with Equipped Modem
local Inventory = peripheral.wrap(ANTENNA_SIDE) -- Wraps Turtle's Inventory for Easy Access
local InvSize = Inventory.getInventorySize()    -- Stores Turtle's Inventory Size
local CommandList = {}                          -- Table that will hold the funcations for each command that is send across Rednet


--Starts the Ritual Crafting by inserting Target Item
function craftItem(name)
    for i=1,InvSize,1 do
        local tmp = Inventory.getStackInSlot(i)
        if(tmp ~= nil) then
            if(tmp.display_name == name) then
                turtle.select(i)
                return turtle.drop()
            end
        end
    end
    return false
end

--Stops the Ritual from Crafting by removing target item
function stopCraft()
    return turtle.suck()
end

CommandList["craft"] = craftItem(x) -- Adds CraftItem to command list with parameter
CommandList["stop"]  = stopCraft()  -- Adds StopCraft to command list


--Main Control Loop
while(true) do
    local event, id, msg = os.pullEvent("rednet_message") --Waits for Rednet Message From Logic Computer
    local cmd = textutils.unserialize(msg)                --Unserializes Command Table from Rednet Message


    if(cmd[1] == "craft") then                            --Runs Command and passes parameter with it
        print("Crafting ", cmd[2])
        craftItem(cmd[2])
    elseif (cmd[1] == "stop") then
        print("Craft Finished")
        stopCraft()
    end

    sleep(1)                                              --Sleeps for a second
end