while true do

redstone.setOutput("top", false)
print("feeding scraps")
for i=1,16 do
  turtle.select(i)
  while (turtle.getItemCount(i)>0) do
    if turtle.dropUp()==false then
      -- redstone.setOutput("top",true)
      -- sleep(0.5)
      -- redstone.setOutput("top",false)
      -- uncomment 3 lines above, if you use RP2 Filter to pull UU from Fabr.
      sleep(5)
    end  
  end
end
print("out of scraps .. turning off")
redstone.setOutput("top", true)

for i=5,1,-1 do
  print("sleeping for "..i)
  sleep(60)
end

end