Now, I’ll present some more active electronics-based devices. In Figure 1, here’s a purchased PC board module based on the ...

We’ve said it before: building one-offs is different from building at scale. Even on a small scale. There was a time when it was rare for a hobbyist to produce more than one of anything, but these ...

Folks from [Adafruit] are showing off a neat hack – USB host on RP2040, using the now-famous PIO peripheral. [Adafruit] builds a lot of RP2040 boards, and naturally, you gotta test them before you ...

Distribution amps and many other types of equipment can provide multiple outputs seldom accessed once set, which makes it that much more troublesome when a change must be made. Writing on the unit ...

This article is dedicated to Jim Williams who several years ago (2006) wrote an article in EDN regarding the need of a good lab apparatus to qualify the behavior of voltage regulators for compliance ...

The UNH-IOL (University of New Hampshire InterOperability Laboratory) designs and builds its own test jigs to connect test equipment with devices under test. The staff makes its test jigs out of FR4 ...

Engineers are problem solvers. It’s what we do. When working on a project at your bench, you probably have the usual collection of hand tools, test equipment, and a soldering station or two. Sometimes ...