
As an engineering student, I build a lot of microcontroller projects using ESP8266 and NodeMCU (like a smart irrigation system and robotics). Graphviz is awesome because I can just write simple text using the DOT language, and it automatically generates complex flowcharts of my C++ logic. It helps me perfectly visualize the "state machines" of my sensors and local web servers before I actually upload the messy code to the board. Plus, being 100% free and open-source makes it perfect for my college assignments. Review collected by and hosted on G2.com.
It doesn't have a modern visual drag-and-drop interface like other diagramming tools. You have to type out the code to generate the graphs, which feels a bit old-school and takes a little bit of time to learn initially. Also, if your DOT script gets too long for a complex circuit logic, finding a missing bracket or syntax error can be slightly annoying. Review collected by and hosted on G2.com.
