Sunnytech Solar Magnetic Levitation Model Levitating Mendocino Motor Educational Model Vertical Stand ST18

I am a professor of electrical engineering, and I collect well-made demonstrations for my office. This is a beautiful addition. Clearly hand-made, but well-made, out of acrylic and epoxy, it revolves smoothly when illuminated by the midday sun. It requires a fair amount of light to operate; for example, an smartphone's "flashlight" is not sufficient, but a small LED dedicated flashlight is (and much better than full sunlight). It's a wonderful demonstration of simple motor action with a clever commutator design, and a good lead-in to practical matters of optimal solar cell energy conversion efficiency. Nicely-done.

It's pretty crappy. I wouldn't buy it again. It barely works, and there was a magnet that either fell off it during shipping or it just has no purpose; I don't know what it's for. The directions were no help because they are written in poorly translated English.

This does work. However, it seems to be designed upside down.It doesn't seem to work when it is standing on its base.But if you turn it over, and set the magnet to center, it works fine.Soo, works great, Upside Down.

I'm a professional engineer, and this thing is poorly made and took forever to get here. It must have come from Mars. I tried direct sunlight a 500 CREE led light and a fully charged high power flashlight, nothing worked. I have asked for a refund.

Works exactly as described on line.