In the past few years, we have covered plenty of levitating speakers, lights, and other gadgets. You can always buy these or build your own. This project from SparkFun suggests how you can build your own levitating LED lamp. It involves using magnets and simple circuits to get started.
More gadgets like this: here
Levitating LED Lamp
As the developer suggests, you should build the levitation circuit and use the potentiometer to adjust the levitation set point. Using simple magnets, you will be able to float a light in the air without any wires. More info is available on GitHub.
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