Junkbox Build Keeps Tesla Coils Perfectly Varnished

Admittedly, not a lot of people have a regular need to varnish coils. It’s mainly something that Tesla coil builders and other high-voltage experimenters are concerned with. But since that gr…

Using Homebrew Coils To Measure Mains Current, And Taking The Circuit Breaker Challenge

Like many hackers, [Matthias Wandel] has a penchant for measuring the world around him, and quantifying the goings-on in his home is a bit of a hobby. And so when it came time to sense the current …

Automatic Coil Winder Gets It Done With Simple Hardware And Software

We’ve grown to expect seeing mechatronics project incorporate a standard complement of components, things like stepper motors, Arduinos, lead screws, timing belts and pulleys, and aluminum ex…