title: Trying to find an equivalient to wx.Timer : Python
body: <p>I am trying to discover a similar wx.Timer method in Kivy to create a basic stop watch. I achieved this in wxPython, but not clear on how to achieve this in Kivy (a new framework that I've just come across. Additionally, Kivy does not appear to have an LED number display like in wx.Python. 
  Here is how I achieved this using wxPython, more or less:</p>
  
  <pre><code>import wx
  import wx.gizmos as gizmos
  import win32api
  import time
  
  
  
  class LED_timer(wx.Frame):
      def __init__(self, parent, id):
          pos = wx.DefaultPosition
          wx.Frame.__init__(self, parent, id, title='Stop Watch', pos=pos, size=(350, 100), style= wx.SYSTEM_MENU | wx.CAPTION | wx.CLOSE_BOX)
          size = wx.DefaultSize
          style = gizmos.LED_ALIGN_CENTER
          self.led = gizmos.LEDNumberCtrl(self, -1, pos, size, style)
          ...
          ...
          ...
          self.timer = wx.Timer(self, TIMER_ID)
  
          # update timer every 1/10 second (100ms)
          #self.timer.Start(100)
          self.timer.Stop()
          ts = self.t_format(start_time)
          self.led.SetValue(ts)
          ...
          ...
          ...
      def OnTimer(self, event):
          global start_time
          start_time += 1
          ts = self.t_format(start_time)
          self.led.SetValue(ts)
  
  
      ...
      ...
      ...
      ...
  </code></pre>