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Here’s a great demonstration of a levitating magnet with 2 high-speed rotating cylinders.

Maybe someone can take this idea further and make us some hoverboards please!

While working on science museum exhibits in 1990 I came up with the above idea: it is known that a spinning metal disk will lift and fling a strong magnet. Therefore, metal rods with opposite spin will lift a magnet but WON’T fling it sideways. It works! I used “sched-80″ heavy wall copper tubes about 1-3/8″ diameter, 12″ long, with 1/4″ wall thickness. I hammered aluminum plugs into the tubes, carved shaft-tips with a lathe, built endblocks and bearings, spun them with an AC/DC motor, and managed to levitate a stack of two 3/4″ diameter neodymium magnets. The spinning tubes must move at about 5000 RPM before the magnet starts floating.

via hackedgadgets, amasci

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Here’s a cool way to paint all your gadgets to become ultra-violet reactive.

Commercial UV paint is far too expensive. Using extremely UV reactive yard marking paint from any hardware store, you can pimp your case for just 26 cents an ounce! Check out our DIY HacknMod.com demonstration video.

via hacknmod

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Here’s a cool hack showing you how to unblock blocked caller-ID numbers.

*This is informational purposes only.  Do not use this hack unless you are a law enforcement agent.

In a demonstration video, a hacker tweaks said asterisk box with some new configurations to strip out privacy flags, forward the call to another number, and ultimately reveal caller ID information which, surprisingly, is still available. This isn’t meant to be easy, but if the terms “prepend,” “SIP trunk,” and “asterisk box” don’t scare you away, go ahead and watch the video after the break.

via engadget

Here’s a cool solar dish that is capable of “vaporizing” water the second you hit the apex of its dish.  The MIT students have already formed a corporation, there’s no telling when this will be available for homes and offices.

The results are staggering — the completed mirror focuses enough solar energy at its focal point to melt solid steel.  The energy of typical sunlight is concentrated by a factor of 1,000.  This was showcased during a demonstration, in which a team member held up a board, which instantly and violently combusted, when brought within range of the focal point.

via dailytech

God, it’s a Lego NXT Mindstorm robot with an iPhone!!!

Continue reading ‘iPhone Lego NXT Mindstorms Robot’

Wow, this is awesome! This guy is serious about recycling. The hard disks are connected to his MIDI system and are all coordinated to play drums. Well watch the video after the jump to see it in action!

Fibra from Belgrade has created an interesting drum system. It uses old hard drive read/write arms as drum hammers. The original hard drive voice coils are used to move the arms. The picture above is the new system which doesn’t seem to be documented yet, have a look at the video for a demonstration of the first version. If you need a larger hard drive project fix have a look at these hard drive projects.

[via HackedGadgets - Make]

Continue reading ‘DIY Hard Disk Drive Drum Machine!’