Good Luck. Without a schematic or code it is like saying what time is it somewhere that is dark. I have not come across any problems with Bogdan Necula HX711 library. May I assume you checked your connections and they are good? I do not know what connections go to what or what are the value of the pull up resistors etc are so I cannot really give a valid guess. Posting a schematic, not a frizzy picture of how you have wired it would be great. Also post links to "Technical" information on each of the hardware devices.