old_contents: # LetNet Example
  import sensor, image, time
  
  sensor.reset()                      # Reset and initialize the sensor.
  sensor.set_contrast(3)
  sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
  sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
  sensor.set_windowing((28, 28))
  
  sensor.skip_frames(time = 2000)     # Wait for settings take effect.
  sensor.set_auto_gain(False)
  sensor.set_auto_exposure(False)
  
  clock = time.clock()                # Create a clock object to track the FPS.
  
  while(True):
      clock.tick()                    # Update the FPS clock.
      img = sensor.snapshot()         # Take a picture and return the image.
      out = img.invert().find_number()
      if out[1] > 3.0:
          print(out[0])
      #print(clock.fps())             # Note: OpenMV Cam runs about half as fast when connected
                                      # to the IDE. The FPS should increase once disconnected.
  
new_contents: # LetNet Example
  import sensor, image, time
  
  sensor.reset()                          # Reset and initialize the sensor.
  sensor.set_contrast(3)
  sensor.set_pixformat(sensor.GRAYSCALE)  # Set pixel format to RGB565 (or GRAYSCALE)
  sensor.set_framesize(sensor.VGA)        # Set frame size to QVGA (320x240)
  sensor.set_windowing((128, 128))        # Set 128x128 window.
  sensor.skip_frames(time = 2000)         # Wait for settings take effect.
  sensor.set_auto_gain(False)
  sensor.set_auto_exposure(False)
  
  while(True):
      img = sensor.snapshot()
      # NOTE: Uncomment to detect dark numbers on white background
      # img.invert()
      out = img.find_number(roi=(img.width()//2-14, img.height()//2-14, 28, 28))
      img.draw_rectangle((img.width()//2-15, img.height()//2-15, 30, 30), color=(255, 255, 255))
      if out[1] > 5: # Confidence level
          print("Number: %d Confidence: %0.2f" %(out[0], out[1]))
  
subject: Update find numbers script.