docs: def makeServoSpeedPacket(ID, maxSpeed):
  	"""
  	Run servo between 0.0 to 1.0, where 1.0 is 100% (full) speed.
  	"""
  	if 0.0 > maxSpeed > 1.0:
  		raise Exception('makeServoSpeed: max speed is a percentage (0.0-1.0)')
  	speed = int(maxSpeed*1023)
  	pkt = makeWritePacket(ID, xl320.XL320_GOAL_VELOCITY, le(speed))
  	return pkt