Screaming Circuits: Engineer stories


Make that Three QFNs

It's a new weekend, and I'm back to my obsession with stepper motors. If you haven't read part one of this series yet, go back and read it here. That's not an order; more of a plea. In any case,... Read more

A couple of QFNs and Circuit Maker CAD software

It's about time for another project. I normally design half a dozen or so small boards per year. It's not my profession. It's just something I do. But I haven't designed or built anything since the "incident" with the photo... Read more

Twelve Things that started in 2017 and will finish in the next decade or so

It seems like not but just a year ago, I was already forgetting to write a new year's prediction blog post. If that didn't make much sense, then likely neither did my predictions post from a year ago. I started... Read more

Merry Mosfet!

What is Mosfet day and why should you care? Mosfet day is a holiday, on December 23rd of each year, all about celebrating what we are collectively capable of doing, if we set our differences aside, if we look at... Read more

Five traps to avoid when changing from hand assembly to machine assembly

In the past, it was usually pretty easy to find chips in both surface mount and thru-hole packages. Somewhere in the last decade or so, component manufacturers stopped introducing thru-hole versions of their newest chips as standard practice. In many... Read more

Mistakes Were Made - Too Much Ground Isolation

I recently ran a batch of my Neo Pixel clock boards through the factory here. It's an Arduino UNO-based design that I made for myself not long ago. It sports an Atmega328P, with bootloader, an FT231X USB chip, and a... Read more

Out of Ideas and applied Heisenberg

Every now and then, most of us seem to run out of ideas. Then, like the proverbial high school term paper, with a subject requirement of: “Pick a subject you’re interested in”, we struggle to come up with what to... Read more


Sir William Crookes was the inventor of the vacuum tube, discoverer of helium and master experimenter. He was also a very spiritual man and often experimented with the paranormal. Someone as smart of him MUST have been onto something. Nikola... Read more

A What?

I was asked to write a little something about “makers” and how they are relevant to what we do here. A what? The first step was to ask Google “What is a maker” and find out what I had just volunteered for. Read more

The Coming Robot Uprising - 10 Ways To Survive

So, dancing robots are now in the Guinness Book of Records. Not too many things can compete in the category of "dancing robots", so a world record is not all that impressive a feat. Of course, when you're talking over... Read more