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
Category Archives: electromagnet
Mechanical Seven-Segment Display, Smaller and Better Than the Original
One thing we love here at Hackaday is when we get to track the evolution of a project over time. Seeing a project grow over time is pretty typical — scope creep is real, after all. But watching a project …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
Mechanical Seven-Segment Display Really Sticks Out from the Pack
We’ve been displaying numbers using segmented displays for almost 120 years now, an invention that predates the LEDs that usually power the ubiquitous devices by a half-dozen decades or so. But LEDs are far from the only way to run a seven-segment display — check out this mechanical seven-segment display …read more
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Salvaged Drill Gets a Magnetic Upgrade
For most people, a broken tool is at the end of its useful life. But rather than toss a heavy-duty drill that had its handle broken off, [Workshop From Scratch] thought it was a perfect opportunity to create something new. In his latest video, he shows how he converted this …read more
Chat Cat Waves on Slack @
Isolated as we are by national lockdowns and statewide stay-at-home orders, many coworkers are more connected than ever before through oddly-named productivity/chat programs such as Slack. But those notifications flying in from the sidebar all the time are are oh-so-annoying and anti-productive. Ignoring requests for your attention will only make …read more
Scratch Built Magnetic Vise Stays Where You Need It
For those who might not have run into one before, a magnetic vise is used when you want to quickly anchor something to a metal surface at an arbitrary position. They’re often used to hold the workpiece down when machining, and can be a real time saver if a lot …read more
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Magnets Turn Flexible PCB Into Electric Grasshopper
Just because something doesn’t seem to have an apparent purpose, that doesn’t mean we shouldn’t try making it anyway. As flexible PCBs become cheaper and easier to order from low-scale fab houses, we’re seeing hobbyists experiment with new uses for them such as [Carl Bugeja]’s jumping circuit.
The circuit is …read more
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Inverse Kinematics Robot Arm Magna-Doodles The Time For You
Following a surge of creativity fueled by the current lockdown, [Diglo] writes in with his tabletop clock driven by a robotic arm drawing on a Magna Doodle tablet. And if you have one of those still lying around with some old toys and don’t mind cannibalizing it for the project, …read more
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This V8 Makes a Shocking Amount of Power
As a work of art, solenoid engines are an impressive display of electromagnetics in action. There is limited practical use for them though, so usually they are relegated to that realm and remain display pieces. This one from [Emiel] certainly looks like a work of art, too. It has eight …read more