Add breadboard package file and example circuits

[gro1m]

Would like to contribute to #665.

Includes a breadboard.sty file and example usages in an examples folder:

• test circuit, tests breadboard and battery (not drawn yet)
• clock circuit (electronically incomplete, but shows possibilities of package)

Possible future improvements not included:

• ability to specify letters instead of numbers, i.e. A-B-C-D-E, F-G-H-I-J, + and - signs, maybe use fictive intermediate letters.
• ability to specify breadboard layout, number of columns and rows.
• multiple breadboards to allow connections between breadboards
• 3D impression
• bending of circuit elements, allow opaque parameter and settings for thickness

Unfortunately I am not an expert in tex, so there might be quite some room for improvement and the breadboard.sty file is not fully parametrized, but I hope it could help make this library better and provide some breadboard circuit diagram support quite soon...

[Rmano]

Hi! Thanks for the contribution!

Notice that the build failed for unrelated reasons (I do not know what's happening, but it fails setting up context... I have a bad vibe about it).

My only doubt is that I really think that all this should be a separated package/project. Is out of scope of schematic drawing, and I think that adding it to circuitikz will only hinder its development.

[gro1m]

Hi @Rmano
On the one hand, I understand your point. On the other hand, in the issue you linked, I thought there was explicitly the ask for breadboard circuit diagrams. And I definitively think that a breadboard circuit diagram is a schematic drawing. Though, I see the question about circuit symbols, because actually on a breadboard you would also need the visual designs and once we would develop this in the direction of 3D, I start to see your concerns...
So if you do not want to integrate this, it might also be worth to define the scope of #665.