def send_wait(self, text):
self.send(text)<EOL>time.sleep(len(text)*PiLite.COLS_PER_CHAR*self.speed/<NUM_LIT>)<EOL>
Send a string to the PiLite, sleep until the message has been
        displayed (based on an estimate of the speed of the display.
        Due to the font not being monotype, this will wait too long in most
        cases