Top 5 problem-solving Mac apps
Mac users, end your frustrations with some of the most useful apps you will ever encounter.
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Category Archives: magnet
One Stepper Plus a Whole Bunch of Magnets Equals a Unique Seven-Segment Display
Sometimes the cost of simplicity is extra complexity. It seems counterintuitive, but it seems to be true. And this single-motor mechanical seven-segment display seems to be a perfect example of …read more Continue reading One Stepper Plus a Whole Bunch of Magnets Equals a Unique Seven-Segment Display
Magnetic Experiments Shows Gradients
You’ve probably heard the term magnetic gradient before, but have you ever seen one? Now you can in [supermagnetman’s] video, below. The key is to use very fine (2 micron) …read more Continue reading Magnetic Experiments Shows Gradients
A 3D Printer with an Electromagnetic Tool Changer
The versatility of 3D printers is simply amazing. Capable of producing a wide variety of prototypes, miscellaneous parts, artwork, and even other 3D printers, it’s an excellent addition to any …read more Continue reading A 3D Printer with an Electromagnetic Tool Changer
The Word Clock You Can Feel
By this point, pretty much everyone has come across a word clock project, if not built one themselves. There’s just an appeal to looking at a clock and seeing the …read more Continue reading The Word Clock You Can Feel
Street-Legalize Your Ebike With A Magnet
Getting into e-biking is a great hobby. It can get people on bikes who might otherwise not be physically able to ride, it can speed up commute times, and it can even make hauling lots of stuff possible and easy, …read more
Tonewheels Warble in This Organ-Inspired Musical Instrument
Younger readers may not recall the days when every mall had a music store — not the kind where tapes and LPs were sold, but the kind where you could buy instruments. These places inevitably had an employee belting out …read more
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Simple Sensor Makes Filament Measurements a Snap
Just how tight are the manufacturing tolerances of modern FDM printer filament. Inquiring minds want to know, and when such minds are attached to handy fellows like [Thomas Sanladerer], you end up with something like this home-brew filament measurement rig …read more
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Let KiCad and Python Make Your Coils
We like to pretend that our circuits are as perfect as our schematics. But in truth, PCB traces have unwanted resistance, capacitance, and inductance. On the other hand, that means you can use those traces to build components. For example, it isn’t uncommon to see a very small value current …read more
Building This Mechanical Digital Clock Took Balls
In the neverending quest for unique ways to display the time, hackers will try just about anything. We’ve seen it all, or at least we thought we had, and then up popped this purely mechanical digital clock that uses nothing but steel balls to display the time. And we absolutely …read more
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