dropSapCoa - ComputerCraft Turtle Progam

-- this program should be used with Pipes piping into turtle.(Tested with Ender IO Item Conduits.)

local count = 12 -- amount to drop

local sapling = 15 --Uses this to determine sleep time for slot 15 item.
local sapSleepTime = 3 -- time to wait before dropping saplings again

local coal = 16 -- coal or charcoal. uses this to determine sleep time for slot 16 item.
local coSleepTime = 41 -- time to wait before dropping coal again

local empSleepTime = 30 -- time to wait for more items to arrive.

function dropCoal()
    while turtle.getItemCount(1) < count do
        print("Sleeping for "..empSleepTime.." seconds.")
        sleep(empSleepTime)
    end
        if turtle.getItemCount(1) >= count then
            turtle.dropUp(count)
            print("Sleeping for "..coSleepTime.." seconds.")
            sleep(coSleepTime)
        end

end

function dropSapling()
    while turtle.getItemCount(1) < count do
        print("Sleeping for "..empSleepTime.." seconds.")
        sleep(empSleepTime)
    end
        if turtle.getItemCount(1) >= count then
            turtle.dropUp(count)
            print("Sleeping for "..sapSleepTime.." seconds.")
            sleep(sapSleepTime)
        end
end

function checkItem()
    if turtle.compareTo(coal) then
    dropCoal()
    elseif turtle.compareTo(sapling) then
    dropSapling()
    elseif not turtle.compareTo(sapling) then
        print("Please put a sapling in slot 15.")
        sleep(10)
    elseif not turtle.compareTo(coal) then
        print("Please put a piece of coal in slot 16.")
        sleep(10)
    end
end

while true do
    checkItem()
end