dropCoal - ComputerCraft Turtle Program

--[[
Coal dropper for Botania mana generation.  version 1.0 by ThaWade.
Use with checkMana program found > http://pastebin.com/Jgyf9zYE
]]

local count = 9 --change this to the number of Endoflames you're using.
local sleepTime = 41-- sleep time between each coal drop.
local inputSignal = "back"--The redstone input side.
local firstSlot, lastSlot = 1,16

function clearTerm()
    term.clear()
    term.setCursorPos(1,1)
end

function dropCoal()
    print("Dropping coal...")
    turtle.select(1)
    turtle.dropDown(count)
    sleep(sleepTime)
end

function grabItems()
    print("Grabbing items from external inventory.")
    for g = 1,16 do
        turtle.suck()
    end
    print("Done grabing items.")
end

function moveItems()--simply moves items from slots 2 - 16 and places them in slot 1
    print("Moving items...")
    for i = 2, 16 do
        turtle.select(i)
        turtle.transferTo(1)
    end
    print("Done moving items.")
end

function getCount()--makes sure there are enough items in slot one to drop.
    if turtle. getItemCount(firstSlot,lastSlot) < count then
        grabItems()
    elseif turtle.getItemCount(1) < count then --if item count in slot 1 is less than amount configured to drop then
        print("Not enough items in slot 1")
        moveItems()-- we move items from slots 2 - 16 into slot one.
    elseif turtle.getItemCount(1) >= count then--if item count in slot 1 is equal or greater than amount configured to then
        print("Enough items in slot 1. Continuing work...")
        dropCoal()--we proceed with droping the coal.
    end
end

function ifRedstoneSignal()
    print("Checking redstone signal state...")
    if redstone.getInput(inputSignal) == true then
        print("Redstone signal present...")
        getCount()
    else
    print("Redstone signal NOT present...")
    print("Sleeping 60 seconds")
    sleep(60)
    end
end

clearTerm()

while true do
    ifRedstoneSignal()
end