View difference between Paste ID: 4p3KDjRg and Ak5PrfHJ

 -- collector for the tree farm
 -- place facing away from the tree farm
 -- ten blocks from the center of the tree farm
 -- place fuel blocks in the last slot (16)
 -- place chest to the right of the turtle
 --   (as it is facing away)
 
 function fuel()
   if turtle.getFuelLevel() < 30 then
     turtle.select(16)
-
+    if turtle.refuel(16) then
       return true
     end
     print("Refuelling failed.")
     return false
   end
 end
 
 function tunnel()
   for i=1,10,1 do
     turtle.dig()
-
+
   end
   for i=1,3,1 do
-  for i=1,16,1 do
+
     turtle.up()
   end
 end
 
-
+
   for i=1,3,1 do
     turtle.digDown()
     turtle.down()
   end
   for i=1,10,1 do
     turtle.dig()
     turtle.forward()
   end
 end
 
 function dump()
   turtle.turnRight()
   for i=1,15,1 do
     turtle.select(i)
-
+
-collect()
+
 end
 
 function collect()
   print("Fueling")
   fuel()
   print("Going back for more")
   reverseTunnel()
   turtle.select(1)
   print("Picking up stuff")
   sucked = true
   while sucked == true do
     sucked = turtle.suck()
   end
   turtle.turnRight()
   turtle.turnRight()
   print("Coming back")
   tunnel()
   print("Dumping")
   dump()
   turtle.turnRight()
 end
 
 while true do
   collect()
   print("Waiting 15 minutes")
   os.sleep(900)
 end