View difference between Paste ID: wRp5tTVg and 54BS34PU

 local t = turtle
 
 local function forward(x)
 	for i = 1, x do
 		t.forward()
 	end
 end
 
 local function rTurn(x)
 	for i = 1, x do
 		t.turnRight()
 	end
 end
 
 local function lTurn(x)
 	for i = 1, x do
 		t.turnLeft()
 	end
 end
 
 local function up(x)
 	for i = 1, x do
 		t.up()
 	end
 end
 
 local function down(x)
 	for i = 1, x do
 		t.down()
 	end
 end
 
 local function back(x)
 	for i = 1, x do
 		t.back()
 	end
 end
 
 local function gotoStart()
 	rs.setAnalogOutput("left", 0)
 	os.sleep(1)
 	up(2)
 	back(1)
 	lTurn(1)
 	forward(1)
 end
 
 local function rowUp()
-	for i = 1, 1, 4 do
+	for i = 1, 4, 1 do
 		t.dig()
 		up(1)
 	end
 end
 
 local function rowDown()
-	for i = 1, 1, 4 do
+	for i = 1, 4, 1 do
 		t.dig()
 		down(1)
 	end
 end
 
 local facing = t.detect()
 
 local height = t.detect(down)
 
 local function harvest(x)
 	for i = 1, x do
 		rTurn(1)
 			if facing == true and height == true then
 				rowUp()
 			elseif facing == true and height == false then
 				rowDown()
 			elseif facing == false and height == true then
 				forward(1)
 				lTurn(1)
 				rowUp()
 			elseif facing == false and height == false then
 				forward(1)
 				lTurn(1)
 				rowDown()
 			end
 	end
 end
 
 local function gotoHome()
 	back(2)
 	lTurn(1)
 	forward(1)
 	down(5)
 	os.sleep(1)
 	rs.setAnalogOutput("left", 15)
 	os.sleep(3600)
 end
 
 while true do
 	gotoStart()
 	rowUp()
 	harvest(6)
 	gotoHome()
 end