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Rodent-based power generation
Your hamster lives to good life, with food delivery and a maid service that cleans up after him. [DanF] helped to brighten up this hamster’s life even more by improving its exercise equipment and...
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Beginner Project: Super Cheap Magnetic Mixer
[wesdoestuff]‘s mother needed a clean way to mix together fragrance oils. Being the stand up kinda guy he is, [Wes] threw together a few spare parts to make this Magnetic Stir Plate. The whole setup...
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Zen rock garden table uses magnets and sand
[Nick] is working on a prototype of a coffee table sand plotter that draws patterns in sand a lot like a zen rock garden. [Nick]‘s zen rock garden uses a magnet to draw a ball bearing across the sand...
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Seeed Studio shows off their wares
Everyone’s favorite Open Hardware store – Seeed Studio – was at Maker Faire this last weekend. They showed off a bunch of cool toys, oscilloscopes, Arduino shields and other hardware goodness, but one...
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Rigging Your 3D Models In The Real-World
Computer animation is a task both delicate and tedious, requiring the manipulation of a computer model into a series of poses over time saved as keyframes, further refined by adjusting how the...
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Choreographed Iron Dust Dances to the Beat
Up on the second level of World Maker Faire’s main hall, one could hear Technotronic’s hit “Pump up the Jam” playing again and again. We were expecting breakdancing robots, but upon investigating,...
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Toddler Jukebox Requires No Quarters or Button Mashing
Ahh, toddlers. They’re as ham-fisted as they are curious. It’s difficult to have to say no when they want to touch and engage with the things that we love and want them to play with. [Shawn] feels this...
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Nanobots Swim like Scallops in Non-Newtonian Fluids
The idea of using nanobots to treat diseases has been around for years, though it has yet to be realized in any significant manner. Inspired by Purcell’s Scallop theorem, scientists from the Max...
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Make a Microphone Out of a Hard Drive
[Rulof Maker] has a penchant for making nifty projects out of old electronics. The one that has caught our eye is a microphone made from parts of an old hard drive. The drive’s arm and magnet were set...
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Hacker Reads Magnetic Stripe Card With Flatbed Scanner
[anfractuosus] has been reading magnetic stripe card… optically! While hackers routinely read and write stripe cards, this is the first time we’ve reported on optically imaging and decoding data from...
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Back to Basics: What’s the deal with Magnets?
I consider myself a fairly sharp guy. I’ve made a living off of being a scientist for over 20 years now, and I have at least a passing knowledge of most scientific fields outside my area. But I feel...
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Bismuth Crystals Hold Magnet Suspended for 100 Years
[NightHawkInLight] has been playing around with the diamagnetic properties of bismuth. Diamagnetic materials get a lot of attention due to their strange ability to produce the opposite of the magnetic...
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Hard Drive Disassembly is Easy and Rewarding
Have any dead hard drives kicking around? Hackaday alum [Jeremy Cook] shows how easy it is to disassemble a hard drive to scavenge its goodies. The hardest part is having the patience and the tools to...
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Pong In Real Life, Mechanical Pong
[Daniel Perdomo] and two of his friends have been working on a mechanical version of Pong for the past two years. We can safely say that the final result is beautiful. It’s quite ethereal to watch the...
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Hackaday Prize Entry: Visualizing Magnetic Fields
In 1820, Hans Christian Oersted discovered the needle of a compass would deflect when placed next to a wire carrying an electric current. It took 15 years for the first electric motor to be invented...
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Smartphone Hack For Adding Magnet Power Dock
Here’s a neat hack for making a magnetic charging mount for a cell phone. We know what you’re thinking, but this is definitely not a traditional contactless charging system. Those use magnets but in a...
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Modest Motor Has Revolutionary Applications
Satellites make many of our everyday activities possible, and the technology continues to improve by leaps and bounds. A prototype, recently completed by [Arda Tüysüz]’s team at ETH Zürich’s Power...
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You May Have a Nixie Tube Clock, but Can Yours Levitate?
Nixie tubes, electromagnets, levitation, and microcontrollers — this project has “Hackaday” written all over it! Time Flies: Levitating Nixie Clock comes from [Tony Adams], and uses a lot of technology...
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Ask Hackaday: What Are Magnetic Gears (Good For)?
Magnetic gears are surprisingly unknown and used only in a few niche applications. Yet, their popularity is on the rise, and they are one of the slickest solutions for transmitting mechanical energy,...
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Scrap Bin Mods Move Science Forward
A first-time visitor to any bio or chem lab will have many wonders to behold, but few as captivating as the magnetic stirrer. A motor turns a magnet which in turn spins a Teflon-coated stir bar inside...
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