A simple timer written in AutoIt to make a noise after a countdown.

config.ini

; Escape Key = {ESC}
; End Key = {END}
; Page Down = {PGDN}
; Page Up = {PGUP}
; For more: Google "Autoit Send"

[Hotkeys]
	startKey={PGDN}
	stopKey={PGUP}
[Duration]
	countdown=29
[Noise]
	file=alert.mp3

simple_timer.au3

;;;;;
; simple_timer.au3 - Author Krirken
; A timer countdown, will count down from a value in the configuration file "config.ini"
; Use the configuration file to specify start/stop HotKeys for the timer
;   A HotKeys normal function will be unavailable while the script is running (The key won't work like normal)
; You can also specify the timer duration and sound file to play at timer completion
; To exit the script, find it in the task bar and right+click and select 'Exit'
; FOR CHANGES IN THE CONFIG FILE TO TAKE EFFECT YOU MUST RESTART THE SCRIPT
;;;;;

Const $sCfgFilename = "config.ini"

Const $stopKey = IniRead($sCfgFilename, "Hotkeys", "stopKey", "{PGUP}")
Const $startKey = IniRead($sCfgFilename, "Hotkeys", "startKey", "{PGDN}")
Const $timerDuration = IniRead($sCfgFilename, "Duration", "countdown", "30")
Const $alertSoundFile = IniRead($sCfgFilename, "Noise", "file", "C:\Windows\media\notify.wav")
Local $time = 0

; Setup Hotkeys to start and stop counting
HotKeySet($stopKey, StopCount)
HotKeySet($startKey, StartCount)

; StopCount is called when you press the stopKey from the configuration file
Func StopCount()
   If ($time > 0) Then
	  ;ConsoleWrite("Stopping Timer..." & @CRLF)
	  $time = -1
   EndIf
EndFunc

; StartCount is called when you press the startKey from the configuration file
Func StartCount()
   ;ConsoleWrite("Starting Timer..." & @CRLF)

   if ($time <= 0) Then					; If the timer is not running (it is zero)
	  $time = $timerDuration		; Set the time to the timeDuration from the configuration file
   Else
	  Return						; Do nothing if the timer is already running.
   EndIf

   While $time > 0
	  Sleep(1000)
	  $time -= 1
   WEnd

   ; Play sound when finished
   If ($time > -1) Then
	  SoundPlay($alertSoundFile)
  	  ;ConsoleWrite("Timer Finished..." & @CRLF)
   EndIf
EndFunc

; Sleep forever because we are always listening for HotKeys
While True
   Sleep(600000)
WEnd