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  • Sump pump water level: The software

    chmod 777 pum.pyErrorroot@raspberrypi:~# python pum.pyUltrasonic Measurementpum.py:30: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings. GPIO.setup(GPIO_TRIGGER,GPIO.OUT) # TriggerTraceback (most recent call last): File "pum.py", line 51, in <module> elapsed = stop-startNameError: name 'stop' is not defined

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