startup

while true do

  a = peripheral.wrap("front")
  p = a.getPressure()
  r = math.floor(p + 0.5)
  print(p.." : "..r)

  if r < 12 then

    rs.setAnalogOutput("front", 15)

  else

    rs.setAnalogOutput("front", 0)

  end

  sleep(5)
end