The Secret Life of Circuits is now in stock everywhere

(blog.coredump.cx)

34 points | by surprisetalk 2 days ago

6 comments

  • cantrevealname 49 minutes ago
    I've been browsing his free sample chapter on basic electromechanical devices[1], and I must say that it is incredibly well written. Take a look at his explanation of switch bounce:

    If you pry open a typical switch, you’ll probably find that its internals are quite complex. Inside, there might be a small spring-loaded roller that travels over a tiny hump or an intricately shaped metal leaf that “pops” when pressed firmly enough. The purpose of these mechanisms is to keep the switch firmly in place until sufficient force is applied, at which point it snaps immediately into the new position. This nonlinear behavior provides satisfying tactile feedback, reduces sensitivity to vibration and other accidental inputs, and prevents the switch from resting in any state other than “fully off” or “fully on.”

    The flip side of this approach is that once the mechanism gives in, things happen quickly: The contacts are pulled apart or slammed together at a considerable speed. Because metal is elastic, this motion produces some vibration that manifests as electrical glitches lasting from tens of microseconds to a few milliseconds. The effect is known as switch bounce.

    I know about switch bounce but I've never seen it explained so clearly. Usually electronics books will say "mechanical switches will bounce before settling" and will then describe a circuit or algorithm to deal with it. What's always missing is a plain English discussion of the why and how.

    [1] https://lcamtuf.coredump.cx/electronics/preview

    • solyin 28 minutes ago
      I checked out that chapter because the critical topic after switch bouncing is debouncing! ctrl-f says not that chapter tho. Lots of other good stuff tho!
  • dzink 39 minutes ago
    Received my pre-order and started perusing it. It’s great to finally see an explanation of a lot of things I’ve only seen experimentally.
  • suboto 41 minutes ago
    For the amount of marketing and praise this book has gotten, I’m very unimpressed. I don’t mean it to come across snobbish. I just don’t see a take that’s in any way out of the usual.

    While I don’t expect one book to teach it all, I would like to see how it compares to the current crop of books and why is it better. The sample chapter left me very unimpressed and the book looks like it’s meant to be more for a coffee table and less for actual hands on usage. I don’t see a way that someone would put this into practice without an accompanying practice/lab book. Otherwise, it reads like trivia that showcases how much the author knows. Great, I guess?

    Speaking of covers, Open Circuits: Inner Beauty of Electronics has a much more honest yet intelligent cover to it. Each page is both informational and extremely well done. Someone who has no knowledge of electronics or electricity can walk away learning something because it shows how things physically work with photos. The visual itself is almost self explanatory as a still image of different materials and how they are arranged. In other words, it has information density that’s both attractive and impactful.

    My actual picks, are the likes of Floyd or Melvino, the Charles Platt one that has loads of circuits to build, and of course the clumsy but informative Forrest Mims series of books. Then you can get into Elicia White’s Embedded or any other assortment of more advanced books on power electronics etc.

    Open to be proven wrong but yeah. I would have expected more because I don’t know of any book on this subject other than Art of Electronics and maybe Microelectronics by Sedra (or Razavi) that gets this much praise. Yet it started getting this praise before it was even released.

    Bashing AI is fun except even good old Sam Ben-Yaakov is coming around to appreciate how useful it is to pedagogy.

    I remain skeptical.

  • tejtm 1 hour ago
    I got as far as the eratta
    • cantrevealname 42 minutes ago
      I'm not sure I understand your point about the errata[1]. Are you saying it's wonderful that he provides an online errata from the get go, and looks like he's committed to maintaining it? Or are you saying that it's a bad sign that a bunch of errors have been found in a newly published book?

      [1] https://lcamtuf.coredump.cx/electronics/errata.shtml

  • seventytwo 1 hour ago
    Love it
  • dead_hn_theory 1 hour ago
    I still have no idea who this book is for.
    • pmg 1 hour ago
      It’s like a non-calculus based astronomy course. Sometimes you just want to learn about the thing directly without spending two semesters learning the mathematical machinery first.

      The content is pretty good but I think they missed the target audience pretty badly with that title and cover.

      If I was trying to make that jump from arduino blinking an LED to custom PCB again something like “Applied Circuits: A Practical Guide to to PCBs” with a cover in the style of the circuit diagrams[1] would be an instant buy.

      [1] https://nostarch.com/download/samples/secret-life-of-circuit...

      • cantrevealname 34 minutes ago
        > The content is pretty good but I think they missed the target audience pretty badly with that title and cover.

        I'm in agreement with you. The cover art and title give the impression of a children's book or a coffee-table book or something "light and fun!". It's not a textbook, but it's much more than a fluffy lightweight children's book. Reading the sample chapter, I think the audience he should have targeted is anyone who liked the monthly magazine "Scientific American" (if you're old enough to remember that). Basically anyone who wouldn't mind being called a hacker, nerd, geek, or science fan. Which is still a huge audience.

    • unsnap_biceps 1 hour ago
      Reading the sample chapter at https://nostarch.com/download/samples/secret-life-of-circuit... makes me think this would be a good gift to a 10+ year old who is interested in learning about electronics.
      • gotfork 48 minutes ago
        That was my thinking, giving a copy to my niece and nephew this weekend.