Collaborate Disseminate
We’ve got mixed feelings about a new video from [AndysMachines] that details how he makes custom ball screws. On the one hand, there’s almost zero chance that we’ll ever have …read more Continue reading Rolling Your Own Ball Screws
Energy is expensive these days. There’s no getting around it. If, like [Giovanni], you want to keep better track of your usage, you might find value in his DIY energy …read more Continue reading Balancing Balls With A Touchpad
You might have heard of electrets being used in microphones, but do you know what it is? Electrets produce a semi-permanent static electric field, similar to a magnet produces a …read more Continue reading Electrostatic Puck: Making An Electret
[Stephen] has a basement that depends on a sump pump. What that means is if the pump fails or the power goes out, the basement floods—which is rather undesirable. Not …read more Continue reading An Over-Engineered Basement Monitor
Analog dials used to be a pretty common way of displaying information on test equipment and in industrial applications. They fell out of favor as more advanced display technologies became …read more Continue reading E-Ink Screen Combined With Analog Dial Is Epic Win
[MindYourDecisions] presents a Babylonian tablet dating back to around 1800 BC that shows that the hypotenuse of a unit square is the square root of two or 1.41421. How did …read more Continue reading Square Roots 1800s Style — No, the Other 1800s
Last time we checked in on [Inkbox], he had made a 16-bit CPU in Excel. Impressive, but not really practical. Presumably, his latest project isn’t any more practical, but we …read more Continue reading RISC CPU Lives in Excel
If you’re into CNC machining, mechanical tinkering, or just love a good engineering rabbit hole, you’re in for a treat. Substack’s [lcamtuf] has written a quick yet insightful 15-minute introduction …read more Continue reading Gear Up: A 15-Minute Intro on Involute Gears
A mouse is just two buttons, and a two-dimensional motion tracking system, right? Oh, and a scroll wheel. And a third button. And…now you’re realizing that mice can be pretty …read more Continue reading Custom Mouse Rocks Neat Thumbstick Design
Have you ever wondered how a magnetometer works? We sure have, which was why we were happy to stumble upon this article on simple homebrew fluxgate magnetometers. As [Maurycy] explains, …read more Continue reading Simple Stack of Ferrites Shows How Fluxgate Magnetometers Work