Earlier quoted context omitted.
The smart knob you made is genuinely one of the best hardware creations I have ever seen. I only wish that I was creative enough to think up good uses for it so that I could put it to work, lol.
Haha, I've built at least 5 of them and my problem is that I enjoy the hardware/design portion as a hobby, but writing the software to put them to use feels too much like my day job, so I haven't actually done anything too useful yet...
Your knowledge seems practical and fairly deep to me. I loved electronics so I got an electronics degree and I ended up with an irrational antipathy towards electronics since then. Got a software job instead which turned out to be a great career (compared with most of the electronics guys I know).