To make the HX711 actually work in your simulation, your code needs a library to handle the communication protocol. Bogdan Necula's HX711 Library
The HX711 library for Proteus simulation is primarily used to interface load cells with microcontrollers like Arduino within the Proteus professional software environment. You can find download links and installation guides for these library files—typically in .LIB and .IDX formats—through community engineering sites. hx711 proteus library download
Note: The "Program Data" folder is often hidden. You may need to enable "Hidden Items" in your Windows view settings. To make the HX711 actually work in your
Move both the .LIB and .IDX files into this LIBRARY folder. hx711 proteus library download