Seed Farmer

local helium_seeds = false

function getFuel()
   turtle.select(1)
   while turtle.getFuelLevel() < 6000 do
      while turtle.getItemCount(1) < 1 do
         redstone.setOutput("top", true)
         sleep(1)
      end
      turtle.refuel(1)
   end
   redstone.setOutput("top", false)
end

function clearInv()
   for x = 1,16 do
      if turtle.getItemCount(x) > 0 then
         turtle.select(x)
         turtle.dropDown(64)
      end
   end
   turtle.select(1)
end

function harvest()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   if helium_seeds then
      turtle.digUp()
      sleep(1)
      while turtle.suckUp() do end
   else
      turtle.digDown()
   end
end

function cleanUp()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   if helium_seeds then
      turtle.suckUp()
   end
   turtle.suckDown()
end

clearInv()
getFuel()

while true do
   for x = 1,6 do
      harvest()
   end
   turtle.turnLeft()
   turtle.turnLeft()
   for x = 1,6 do
      for i = 1,4 do
         turtle.forward()
      end
   end
   turtle.turnLeft()
   turtle.turnLeft()
   clearInv()
   redstone.setOutput("back", true)
   sleep(.4)
   redstone.setOutput("back", false)
   sleep(2)
   redstone.setOutput("back", true)
   sleep(.4)
   redstone.setOutput("back", false)
   sleep(4)
   clearInv()
   for x = 1,6 do
      cleanUp()
   end
   turtle.turnLeft()
   turtle.turnLeft()
   for x = 1,6 do
      for i = 1,4 do
         turtle.forward()
      end
   end
   turtle.turnLeft()
   turtle.turnLeft()
   clearInv()
   getFuel()
   sleep(3600)
end