Despite many people calling it painful and time-consuming to write, good LaTeX is always nice. Here are three packages with which we can generate really cool, picture-perfect (excuse the pun), and crisp technical diagrams.

TikZ

The TikZ package is arguably the most important among the three, and indeed the other two packages which I will mention are built on top of this. TikZ is the front-end for an even more bare-bones packages called pgf. It’s usually used to plot graphs (the graph theory kind), and sometimes actual graphs also (the one with X- and Y- axes).

The above image was made entirely in TikZ- it looks very cute.

CircuiTikZ

Yes, this had to be done. We needed good ways of plotting electrical circuits in graphs, and lo and behold, we have CircuiTikZ. This package is very useful to get the kind of circuits one would learn in an electrical networks course.

The above image was generated using this package.

QuanTikZ

One does not stop at classical circuits- but rather we have quantum circuits. I was told of this by some friends doing a course on quantum computing. This does all the quantum gates and the like nicely, and the code itself looks very clean.

All in all, you should definitely try out LaTeX images for your projects- it makes the process of drawing diagrams very easy and gives you maximum control.