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Three canicule ago on October 21, 2014 it was appear to the apple the Back to the Future hoverboard was real. It’s a Kickstarter, of course, and it’s trending appear a $5 Million dollar payday for the creator. Surprisingly for a activity with this abundant business genius, it’s a real, absolute accessory and there’s alike a patent. From the patent, we’re able to accumulate a few capacity of how this hoverboard/magnetic acclivity accessory works, and in our column on the antecedent coverage, we said we’d be giving abroad some aliment to the aboriginal being who can carbon this alluring acclivity accessory and put it up on hackaday.io.
[jellmeister] aloof won the prize. It’s somewhat cheating, as he’s had his ancestor hoverboard alive in July, and demoed a added avant-garde ‘upside-down quadcopter’ accessory at the Brighton Mini Maker Faire in September. Good on ‘ya [jelly]. You’re accepting a allowance agenda for the hackaday store.
Like the Kickstarter hoverboard, [jelly] is application an arrangement of magnets alternating in a anatomy aloft a non-ferrous metal. For the antecedent test, eight neodymium magnets were abiding in a frame, abeyant over 3/4″ aluminum plate, and spun up with a drill. With aloof this simple test, [jelly] was able to accomplish 2kg of lift at 1cm and 1kg of lift at 1 inch of separation. This analysis additionally provided some admired acumen on what the magnets do to the aluminum or copper; the 3kg aluminum bowl was about spinning, acceptation if this accessory were to be acclimated on baby plates, counter-rotating pairs of alluring lifters would charge to be used.
The analysis rig again avant-garde to two pairs of rotors with accepted amusement brushless motors, but adherence was a problem; the alluring rotors provided abundant lift, but it would bound abatement over. To break this problem, [jellmeister] took a accepted quadcopter configuration, replaced the backdrop with alluring rotors, and auspiciously hovered it aloft a area of aluminum at the Brighton Maker Faire.
Since [jellmeister] has actually built one of these magnetically levitating hoverboards, he has a lot added abstracts about how they assignment than an embargoed columnist release. The alluring rotor hoverboard will assignment on aluminum as able-bodied as copper, but [jell] suspects the Kickstarter hoverboard may be operating appropriate at the bend of its performance, necessitating the added able chestnut bisected pipe. The array of the non-ferrous bowl additionally makes a difference, with bigger achievement begin application thicker plates. No, you bojo, hoverboards don’t assignment on alkali water, even if you accept pow-ah.
So there ‘ya go. That’s how you body a freakin’ hoverboard. [jellmeister]’s architecture is a little awkward and application a Halbach array for the alluring rotors should advance efficiency. Application a 3D printed rotor architecture is a achievement of genius, and we’ll apprehend a few added quad-magnetic-levitating-things to hit the tip band in abbreviate order.
Demos of [jellmeister]’s assignment below.
Oh. These things charge a name. I humbly abide the appellation ‘Bojo’ to accredit to any accessory that levitates admitting alternating magnets and boil currents.
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