You Can 3D Print Yourself Some Simple Magnetic Switches

Permanent magnets aren’t typically switchable. They’re always doing their magnet thing. However, if you align them with a bunch of other magnets in just the right way, you can create a …

Print Your Own Magnetic Connector

If you have a late-model laptop, you’ve probably seen how the chargers magnetically snap into place. In theory, this should be easy to recreate for your own purposes. But why reinvent the whe…

Electromagnetic Actuator Mimics Muscle

Most electromagnetic actuators are rotating motors, or some variation on the theme, like servos. However, it’s possible to do linear actuation with electomagnetics, too. [Adrian Perez] demons…

Swapping Vinyl For Cardboard With This ESP32 Turntable

Cardboard is a surprisingly durable material, especially in its corrugated form. It’s extremely lightweight for its strength, is easy to work, can be folded and formed into almost any shape, …

Spinning Magnets Do Your Dice Rolling For You

Dice are about the simplest machines possible, and they’ve been used since before recorded history to generate random numbers. But no machine is so simple that a little needless complexity ca…

Sort Of Electromagnet Attracts Copper, Aluminum

It is a common grade school experiment to wind some wire around a screw, power it up, and watch it pick up paper clips or other ferrous materials. It is also grade school science to show that neith…

Altermagnetismus: Neue Art von Magnetismus entdeckt

Altermagnete wirken wie eine Mischung von Ferro- und Antiferromagneten und könnten neuartige Technologien ermöglichen

3D Printing Improves Passive Pixel Water Gauge

Here at Hackaday, we feature all kinds of projects, and we love them all the same. But some projects are a little easier to love than others, especially those that get the job done in as simple a w…

A Magnet at the Beach...

mirrored from Rumble Neo2020v4vandetta channel

Halbach Array Makes Magnets Strong, Weak

If you want a strong magnet, the obvious answer is to buy one. However, for a variety of reasons, you might want to combine several smaller magnets. There are a few ways to do this, but the Halbach…

Hoverboard Rides On Eddy Currents

The famous hoverboards of Back to the Future haven’t quite gotten here yet, but that hasn’t stopped anyone with a unique personal vehicle from using the name any time they need some qui…

A Bicycle Powered By A Different Kind Of Eddy

When you think of a bicycle and an Eddy, you’d be forgiven for thinking first of Eddy Merckx, one of the most successful competitive cyclists to ever live. But this bicycle, modified by [Tom …

A Crash Course On How MRI Machines Work

Of all the high-tech medical gadgets we read about often, the Magnetic Resonance Imaging (MRI) machine is possibly the most mysterious of all. The ability to peer inside a living body, in a minimal…

MRI Resolution Progresses From Millimeters To Microns

Neuroscientists have been mapping and recreating the nervous systems and brains of various animals since the microscope was invented, and have even been able to map out entire brain structures than…

Clever Mechanism Makes A Linear Control From A Rotary Hall Sensor

Every once in a while we stumble across something so simple yet so clever that we just have to call it out. This custom linear Hall effect sensor is a perfect example of this. By way of backstory, …

Fifteen Flat CRTs And A Bunch Of Magnets Make For Interactive Fun

If you were a curious child growing up when TVs were universally equipped with cathode ray tubes, chances are good that you discovered the effect a magnet can have on a beam of electrons. Watching …