local standby = 0
local tree = 0

while turtle.detectDown() do

	while redstone.getInput("back", true) do
		standby = 0
		tree = tree + 1

		print( "Chopping Tree Number "..tree )

		while turtle.detect() do
			turtle.dig()
			turtle.forward()
		end

		while turtle.detectUp() do
			turtle.digUp()
			turtle.up()
		end

		while not turtle.detectUp() and not turtle.detectDown() do
			turtle.down()
		end

		redstone.setOutput("left", false)

		turtle.back()
		turtle.select(1)
		turtle.place(1)

		redstone.setOutput("left", true)

		print( "Depositing Lumber to Obby Pipe" )

		turtle.turnRight()
		turtle.select(2)
		turtle.drop()
		turtle.select(3)
		turtle.drop()
		turtle.turnLeft()

	end

	while not redstone.getInput("back", true) do

		if standby == 0 then
			print( "Standby Mode" )
			standby = standby + 1
			tree = 0
		end

	end

end