In this video, learn how to make a game projector for smartphones using light bulbs. Follow our step-by-step guide to ...

It is made from a Nokia cell phone screen and a small projector mechanism, ... LCD screens and lots of optics. A projector with no bulb can be found on ebay for $10 or $20.

Careful going out and buying a bunch of busted projectors, most of them will not turn on if the bulb doesn’t light. I bought a projector off craigslist for $10 a few years back and couldn’t ...

Consider the mechanism shown below made up of a continuously-rotating input drive centered at C (shown on the right) and an output drive centered on O ... The first usage of the Geneva mechanism for ...