Yeah, the gears move, naturally. That isn’t even the best part, the gears form a sort of mechanical calculator, as the gears are embossed with the number of teeth on each, so you can work out ratios and such. Not a particularly useful calculator, but most certainly a cool iPhone case.
This is a question that the artist Nickolay Lamm wanted to answer. With the help of Astrobiologist M. Browning Vogel, he launched a number of images representing just what wi-fi would look like if it turns out to be visible to the human eye. Of course these are only virtualisations based on wifi signals, so 2.4ghz and 5ghz, If you could actually see radio waves with your eyes the result would be somewhat different.
Thats right, this homemade 3D printer is made of Lego, and you could make one as well! The NXT controls the LEGObot’s power elements: a hot glue gun, a fan and an old VHS camera motor, which powers the printer’s extruder and build platform. So it actually uses melted glue as the material of choice. Besides that It is only made of Lego Parts, and while no match for a MakerBot or similar commercial 3D Printer, It certainly is cool!
Here is the instructables link
This “camera-ball” is a fascinating idea. With cameras pointing at all angles and sensors to detect It’s orientation it takes a bunch of pictures while mid-air and then stitches them together into a 360 panorama. Not sure if it could handle it, but I’d love to throw this thing down a waterfall. They say It can be used for checking unsafe environments, in firefighting for example, but if you ask me It’s just a fun thing. So far it is just a prototype and not for sale.