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How to make a projector with your own hands

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How to make a projector with your own hands

To watch movies and images, you can create not only the simplest projector for your phone with your own hands, advertising logos, but also more complex designs using spare parts from electronics, ready-made control modules. The picture of a primitive homemade product will be a little blurry, but this is enough for watching feature films. And if you approach the assembly thoroughly, create an LED projector, then in terms of functionality it will be compared with factory models and at the same time it will be several times cheaper.

How the projector works

At the heart of the Smart Projectors, as well as all sorts of sliders, film scopes, are the laws of optics: when the image carrier interacts with light fluxes, the rays are refracted, the picture is enlarged, broadcast on the screen.

Overhead projector with smartphone

A smartphone, such gadgets have a small screen. The task is to enlarge its image and broadcast it on a flat surface. For this, illumination, optics are used: a large magnifying glass, a magnifying glass. In projectors, such elements are called Fresnel lenses. With minor additions, this principle is used in factory products of this type.

Projector from tablet, laptop

For a projecting device from a laptop, tablet, or even from a small computer monitor (the PC unit itself will stand separately), the image quality will be better, since the screen is larger.

Let's consider the "humane" method, in which it is not necessary to disconnect the matrix with the monitor from the laptop. The inhumane method is the same, but the gadget is disassembled, the specified node is pulled out and used as a display, and an extension cable to the part with the keyboard is required (it is sold in electronics stores, on Internet sites).

Professional LCD projector and electronics

Let's make a reservation right away: a home-made LED projector is labor-intensive to assemble, the total cost of parts is approximately $ 1000, but it is cheaper than factory-made devices of this level. Spare parts are purchased at well-known Chinese trading floors.

Case design, LCD matrix check

The display must be purchased with an HDMI board. Also, for convenience, it is recommended to purchase an extension FPC cable (flex cable) and a connection board (connector). We check the matrix by pressing and holding the backlight connector. Next, we proceed to the design of the body.

The body is assembled according to the drawings. You will need the usual tools: knife, pencil, ruler, jigsaw, glue. Materials: textolite, plastic, wood. You can adapt an old computer unit, but then you will need tools for working with tin: wire cutters, a hacksaw for metal, a screwdriver and drills for making holes for the bolts.

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