Motorized marble machines are wonderful desk toys that keep recycling the balls without you having to do anything. Most of them use an electro-mechanical design to keep the movement going. This Perpetual Motion Marble Machine uses an electromagnetic drive to force the ball the top tray.
This model has a transparent design, so you can see what’s happening inside. It has a rechargeable battery that lasts 3 hours. Unlike similar models, this one doesn’t make a whole lot of noise. The base has an invisible touch button and LED charge indicator.
Transparent Electromagnetic Perpetual Motion Ball Machine 😵 Gadgetify
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