View difference between Paste ID: LpjREvn8 and tyykzGqj

--- Treefarm by itsmartin
+-- chtreefarmtest: slightly modified Treefarm by itsmartin (from pastebin.com/tyykzGqj)
 --
 -- Place fuel in slot 14, saplings in slot 15 and 1 dirt in slot 16.
 -- See http://youtu.be/nJYxL_sg96U for setup
 
 function forwardBy(n)
 	for i=1,n do
 		turtle.forward()
 	end
 end
 
 function moveHomeFarm()
 	forwardBy(5)
 	turtle.turnLeft()
 	forwardBy(5)
 	turtle.turnLeft()
 end
 
 
 function plantSapling()
 	turtle.select(16)
 	turtle.place()
 	turtle.up()
 	turtle.select(15)
 	turtle.place()
 end
 
 function waitForSaplings()
 	turtle.select(15)
 	while turtle.getItemCount(15) < 2 do
-		os.sleep(5)
+		os.sleep(2)
 		sleep(2)
 		turtle.suckDown()
 	end
 end
 
 function waitForTree()
-	while turtle.compare() do
+	local treeFoundCount = 0
-		os.sleep(10)
+
 	while treeFoundCount<10 do
 		while treeFoundCount<10 do
 			os.sleep(2)
 			sleep(2)
 			while not turtle.detect() do
 				os.sleep(2)
 				sleep(2)
 			end
 			treeFoundCount = treeFoundCount + 1
 		end
 		turtle.down()
 		turtle.select(15)
-	while turtle.compareUp() do
+		os.sleep(2)
 		sleep(2)
 		if turtle.compare() then
 			treeFoundCount = 0
 			turtle.up()
 		end
 	end
 	turtle.select(16)
 	turtle.down()
 	turtle.dig()
 	turtle.forward()
 end
 
 function cutTree()
 	turtle.select(1)
 	turtle.digUp()
 	turtle.up()
 	local count = 1
 	while count<12 and turtle.compareUp() and turtle.detectUp() do
 		turtle.digUp()
 		turtle.up()
 		count = count + 1
 	end
 	for i=1,count do
 		turtle.down()
 	end
 end
 
 function moveFarmDeposit()
 	turtle.turnRight()
 	forwardBy(4)
 	turtle.turnLeft()
 	forwardBy(4)
 	turtle.select(1)
 	turtle.dropDown()
 	turtle.turnLeft()
 	forwardBy(9)
 	turtle.turnLeft()
 end
 
 while true do
 
 	if turtle.getFuelLevel() < 50 then
 		turtle.select(14)
 		turtle.refuel()
 		if turtle.getFuelLevel() < 50 then
 			write("Not enough fuel\n")
 			return
 		end
 	end
 
 	if turtle.getItemCount(16) < 1 then
 		write("Dirt goes in slot 16\n")
 		return
 	end
 	if turtle.getItemCount(15) < 2 then
 		write("Multiple saplings go in slot 15\n")
 		return
 	end
 
 	waitForSaplings()
 	moveHomeFarm()
 	plantSapling()
 	waitForTree()
 	cutTree()
 	moveFarmDeposit()
 end