Procedural Circuit is an assembly of geometry nodes that allows you to automatically create a pattern of electrical circuits for motion graphics or abstract animations, as well as for Sci-Fi scenes , or turn an existing mesh into a circuit or cover it by circuit. 
This node assembly is highly customizable and includes many features. Here I will list only the main ones. To get acquainted with everything, go to the Documentation tab

Here are links to artworks that I made using this node assembly:
https://www.artstation.com/artwork/DvXnoE
https://www.artstation.com/artwork/Ryx3bE
https://www.artstation.com/artwork/m8G3ny


This assembly can generate Quad and Hexagon based circuits:


And their variations:




It is also possible to make one center from which the entire circuit will spread:




There is also a function that allows you to make the circuit completely flat for optimization or, if necessary, for artistic purposes.

You can also control the profile of the circuit and the shape of the rings at the ends:





One of the most important is the function of turning an existing mesh into a Circuit. This function is extremely necessary because flat circuits can only be used for the floor or for walls, and the ability to turn any mesh into a Circuit gives almost limitless possibilities in customizing the Circuit. These can be decorative details or entire objects(Examples of artworks that I made using this assembly are below this chapter).

In this particular case with Suzanne, I used an experimental function that makes the mesh density uniform (almost like Remesh, but better), otherwise the circuit will turn out to be a strange shape due to the uneven mesh density and topology of Suzanne's model





Examples of Artworks that I made with this node assembly:






As a bonus, I've added all the models I made using this node assembly (except for the katana) as demo file. I decided that it’s not entirely right if there are beautiful pictures of my works and you get a regular grid, so I collected all these works into one simple scene so that you can check them out and possibly use them as inspiration or presets.