Is there a library that output LFSR images given parameters? I'm looking for a library that given parameters; feedback polynomial, initial values then it will produce $\LaTeX$ / Tikz codes to include in Latex documents or LFSR images. Is there such a library?

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Yes, there is a python library LFSR-Automatic-Draw  that can output $\LaTeX$ Tikz code and that can be converted to PNG images by
pdflatex -shell-escape lfsr.tex
The library has many parameters to draw;

One can print the feedback polynomial on the bottom
One can enable/disable printing the name of the boxes
One can  enable/disable printing the initial values
Font size, box sizes, colors, arrow sizes, etc.

Sample outputs are



And, the library now can output multiple images per clock that can be converted to loop-animation