If you've ever tried to control the color or brightness of a levitating lamp remotely, you already know the problem. The floating part has no wires. No battery. No physical buttons. It's just spinning in mid-air, held up by a magnetic field, and somehow it needs to receive color-change commands without dropping the connection.
Most people assume you need Bluetooth for this. A few early designs tried it. The problem is that Bluetooth chips draw milliamps of current, and in a wireless-power setup running on maybe 1-3 watts total transfer, every milliwatt counts. If the receiver chip draws too much, the floating object dims or the levitation itself becomes unstable because the power budget gets split between lift and lighting.
So we went a different route. Our engineering team took the same electromagnetic field that's already transferring power from the base to the floating unit — the very thing keeping the lamp or shoe in the air — and used it as a communication channel. We modulate two separate carrier waves: one amplitude-modulated (AM) for brightness commands, and one frequency-modulated (FM) for color data. Both run through a phase-locked loop circuit that locks onto the transmitter frequency and stays locked even as the floating object rotates, tilts slightly, or shifts position.
Why two channels? Because AM is fast — brightness changes feel instant. But AM is also sensitive to distance. If the floating object wobbles (which all magnetic levitation devices do by a few microns), the amplitude can drift. FM doesn't care about amplitude changes. It only reads frequency, which stays rock-solid regardless of distance. So we run both in parallel: the AM channel handles the immediate "make it brighter" or "dimmer" response, and the FM channel handles the color data that has to be absolutely precise no matter what the floating object is doing.
In practice, this means our Diamond moon lamp and FB7X floating light bulb can cycle through over a million color combinations without a single dropped color transition, even when you spin the floating unit with your hand or nudge it slightly. Retail customers try this all the time — they'll push the floating moon just to see what happens — and nothing breaks. The color stays consistent. That's the dual-mode PLL at work.
This technology ships in every GLEAGLE levitating moon lamp, floating light bulb, and LED levitating display that has color-changing capability. It's also available as a custom integration module for OEM clients building their own floating product displays, levitating Bluetooth speakers, or custom magnetic levitation gifts.