<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def power_up(self):
 """ power up the HX711 :return: always True :rtype bool """

        GPIO.output(self._pd_sck, False)
        time.sleep(0.01)
        return True