Turtle Timer

--[[
  lzTimer v0.1
  (C) LayZee 2013
  Type lzTimer help to get usage instructions
--]]

local args = {...}

function pulse (side)
  rs.setOutput(side, true)
  sleep(0.2)
  rs.setOutput(side, false)
end

if args[1] == nil or args[1] == "help" or args[1] == "usage" then
  print("Usage: lzTimer <interval> <side>")
  print("Example: lzTimer 1.5 back")
else
  local interval = args[1]
  local side = args[2]

  --Main program
  print("Pulsing ", side, " side every ", interval, " seconds")

  while true do
    pulse(side)
    sleep(interval - 0.2)
  end
end