robotics is a deprecated tag that defines a set of off-topic questions. For a question about electronics related to robotics it does not change the solution space or change anything about the question.
Please remove robotics.
Robotics is not part of the site anymore, but this just means that purely mechanical questions are off-topic, right? Questions about the electronics of a robot are still perfectly acceptable, like PID algorithm implementation using computer vision, and a
robotics tag can be helpful in differentiating them. So I don't see why it should be deleted.
The tag is more meaningful now that robotics is not in the title of the site.
There are potentially three kinds of questions with the robotics tag.
In particular, no open question should have only the "robotics" tag, much like no open question should have only a car, datasheets, books, light, programming, telephone, cad, tutorial ,enclosure, c++, workbench, music, documentation, energy, or programming tag. All such questions are either somehow related to electronics in some other way and should have additional tags describing that way attached (in some cases, by creating new tags), or are not really on-topic here and should be closed and moved to a robot-oriented site.
While some people say "If the tag can’t work as the only tag on a question ... [that tag should be] systematically eradicated"(1), they're talking about getting rid of meta tags that don't describe the content of the question, which doesn't apply to the robotics tag and these other tags.