old_contents: import blinkycolor
  import serial
  
  class BlinkyTape(object):
      def __init__(self, port, baud_rate = 115200, pixel_count = 60):
          self._serial = serial.Serial(port, baud_rate)
          self._pixel_count = pixel_count
          self._pixels = [blinkycolor.BLACK] * self._pixel_count
  
      @property
      def pixel_count(self):
          return self._pixel_count
  
      def set_pixel(self, index, color):
          if index >= self._pixel_count: raise IndexError
          self._pixels[index] = color
  
      def set_pixels(self, pixels):
          if len(pixels) != self._pixel_count: raise ValueError
          self._pixels = pixels
  
      def update(self):
          UPDATE_VALUE = [255, 255, 255]
          for pixel in self._pixels:
              self._serial.write(pixel.raw)
          self._serial.write(UPDATE_VALUE)
          self._serial.flush()
  
new_contents: import blinkycolor
  import serial
  
  class BlinkyTape(object):
      def __init__(self, port, baud_rate = 115200, pixel_count = 60):
          self._serial = serial.Serial(port, baud_rate)
          self._pixel_count = pixel_count
          self._pixels = [blinkycolor.BLACK] * self._pixel_count
  
      @property
      def pixel_count(self):
          return self._pixel_count
  
      def set_pixel(self, index, color):
          if index >= self._pixel_count: raise IndexError
          self._pixels[index] = color
  
      def set_pixels(self, pixels):
          if len(pixels) != self._pixel_count: raise ValueError
          self._pixels = pixels
  
      def update(self):
          UPDATE_VALUE = [0, 0, 255]
          for pixel in self._pixels:
              self._serial.write(pixel.raw)
          self._serial.write(UPDATE_VALUE)
          self._serial.flush()
  
subject: Change update value to produce less thrash on embedded side