startup

while true do
  local SignalStrength = rs.getAnalogInput("back")
  local chest = peripheral.wrap("top")
  local items
  local Set = {2,1}
  local direction = "WEST"
  local interval = 5.6
  local runes = 2
  if(SignalStrength < 2) then
    print("Not enough mana in the mana pool!")
    sleep(interval)
    os.reboot()
  end
  for i=1,#Set do
    items = chest.getStackInSlot(i)
    if(type(items) == "nil") then
      print("Slot "..i.." : missing items")
      sleep(interval)
      os.reboot()
    elseif(items.qty ~= Set[i]) then
      print("Slot "..i.." : wrong quantity of items")
      sleep(interval)
      os.reboot()
    end
  end
  print("Transfering items...")
  for i=1,#Set do
    chest.pushItemIntoSlot(direction, i, Set[i], i+runes)
  end
  rs.setAnalogOutput("top",14)
  sleep(2)
  rs.setAnalogOutput("top",0)
  sleep(interval)
end