Enginursday: How to Build a Levitating Light

Check out our latest tutorial on levitating magnets and creating a wireless light!

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A couple years ago, I showed off a project where I made a levitating light.The post had some traction initially, and slowly fell back into the shadows of the internet...or so I thought. Recently, there's been an increase in the comments from customers that were trying to build one themselves but having some difficulty getting it working. If you didn't see it, below is the original video I filmed for the post.

Because of the renewed interest, and the complexity of the build, a short video doesn't go into enough detail. So I wanted to revisit the project and make a tutorial that walks through the more intricate details involved. If you were someone that saw the post and wanted to make it but needed more information, or if this is your first time hearing about it and you would like to build one, check out our new tutorial!

New!

Magnetic Levitation

November 20, 2019

This tutorial will show you how to build a magnetic levitation circuit using common parts.


Comments 7 comments

  • Amazing. As you have provided a tutorial too. Now people would take more interest in this and maybe they try to build it. Keep sharing such type of articles of innovations.

  • Yaaaaes. I saw this project a while back. It's so cool. Magic. =)

  • Nice blog! How much resistance do I need for an LED? and one more thing can you give me the Tips to reduce the electricity bills.

    • The LED is rated at 3W and the received power is about 136mW, so there's no need for a current limiting resistor. Best tip to reduce electricity bills I have is to use less electricity, and thus your bill will be lower :P

  • Could these be made larger? Say, outdoor porch light size?

    • I don't see why not, but from a practical side, if the light falls it's probably going to break the LED. The levitation driver could be modified to cut the current of the inductor until the magnets are in range again, but currently if the magnets fall, the current stays on to the inductor to try and pull the magnets up which draws a bunch of power and even with the small-ish inductor, it gets pretty hot with full current.

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