Variable capacitors may be useful, but the air gap that provides their capacitance is their greatest weakness. Rather than ...

At the risk of starting a controversy: is there anyone who goes to the effort of setting up Home Assistant who wouldn’t ...

EDM (Electrical Discharge Machining) is one of those specialised manufacturing processes that are traditionally expensive and ...

At some point during our primary school careers, most of us probably constructed a simple compass, often by floating a ...

Continuing his reverse-engineering of the Intel 8087, [Ken Shirriff] covers the conditional tests that are implemented in the ...

Ronan] likes 35mm film photography, but the world, of course, has gone digital. He picked up an Epson FilmScan 200 for about ...

Emulating older computers on microcontrollers has been a staple of retrocomputing for many years now, with most 8-bit and ...

While EEG research might help you figure out extrasensory perception, we won’t be betting on it. However, if you want to read ...

A knob can make a surprisingly versatile interface, particularly if it’s the SmartKnob, which builds a knob around a BLDC ...

You have a part that needs different colors or different material properties — with a multi-color 3D printer, no problem. You can also laboriously switch filaments on a single-color printer.

Today in power electronics, the folks over at Texas Instruments have put together a video covering low-dropout (LDO) linear regulators. For a hacker, power is pretty fundamental, so it behooves us ...

In 1966, a mathematician named [Leo Moser] proposed what sounds like a simple problem: What’s the largest shape you can move ...