> and requires pretty serious knowledge of analog electronics

If you want to understand the whole thing in depth, then yes, I guess so. However, at the end it just links to the already made project published at MIT license that you can simply replicate with barely any knowledge. It's an equivalent of self-compiling a software project after checking out its repo, which sure, may seem overwhelming if you never did that before, but ultimately it boils down to some reading comprehension and step following exercise.