Self-made projector from improvised means

Watching videos and movies is best on the big screen, like in a real cinema hall - you need a projector and a screen, all this is very expensive, and not every family can afford. But there is a solution - you can design the projector yourself at home, and then invite everyone to the first viewing. According to the statement of competent specialists, such a miracle of home-made equipment is practically not inferior to a standard product. There are several production options - they are all similar, because each uses a special lens and cardboard boxes of various sizes.

Based on mobile device

The projector out of the box, focused on the phone, belongs to the category of homemade homemade products, which are easy to do yourself.To make it clear to every reader how to make a projector from a telephone, we present a step-by-step manufacturing algorithm, accompanied by photographs of the process. To make a homemade video projector, you need a simple set of tools, consisting of an old shoebox, magnifying glass with a 10x magnification, a sharp knife, a marking pencil, electrical tape and a smartphone.

As a magnifying glass, use a standard magnifying glass or Fresnel lens, which can be purchased at any store of household goods.

1. Carefully cut out the window for the lens, having previously determined the center on the end of the box - this is a very important stage, because the magnifier must stand strictly centered.
   

2. Now you need to fix the lens in the hole made - electrical tape is useful for this, but you can use other options for reliability and aesthetic perception: silicone or durable glue.
   
3. When the projector is made of a smartphone, the main task is to correctly install a stand made of durable cardboard for the phone. The transmitting device should be placed in a specific place in the box, fixed rigidly so that the image on the screen does not twitch.
4. In the room it is necessary to close the curtains, turn off all light sources, and in the dark do the testing - determine the desired location of the device so that the image on the screen is clear.
   
5. Now you need to install on the smartphone special applicationwhich will turn the image over, since the lens, when projecting, rotates the image by 180⁰. Make it easy - in the search bar type “application to rotate the screen on the smartphone” and choose any one to your taste.
6. Now not less important point - it is necessary to make a small hole from the back of the lens from the bottom to connect the charger for smartphone.
   

A homemade projector for home cinema is ready, now we check its work, we determine the specific location and invite family members to watch video footage. To help the masters there is great video.

Based on tablet or laptop

If you decide to make a home projector with your own hands and want to achieve a better image, then you should use a tablet as a transmitting monitor - the screen resolution is much higher than that of a smartphone, and therefore the quality of the transmitted image is many times better.

At the laptop, these parameters are even better, but the projector itself will be cumbersome - here you have to choose, given the size of the room for the demonstration of films.

The boxTo build a home device based on the tablet, choose a larger size: its length should be at least 50 cm, and the front side should be slightly larger than the tablet screen. To increase it is better to purchase a large magnifying glass Soviet-made, then the quality will be excellent. An example would be a device for full-page reading books, the cost of the lens will be within $ 8.

Using a knife, cut a hole in the end, which will be slightly smaller than a magnifying glass, then fix the lens with a double-sided adhesive tape, a grooved surface inside the box.

The tablet is fixed inside the box, taking into account that the lens turns the image over.

Design laptop based slightly different - rectangular holes are cut on both sides of the long end of the box. The device itself is located down the monitor, and the keyboard on top of the cardboard base - it helps to get the right image, rather than an inverted version.

How to improve image quality

To increase the quality of the final image, it is necessary to set the maximum settings on the monitor of the product from which the broadcast is being performed, to exclude the penetration of light into the room where viewing is organized. The quality is also affected by the distance to the screen: the closer the homemade projector is, the better the quality, but the smaller the picture.

All these parameters are easy to adjust in advance and achieve a quality that fully satisfies you. There are separate requirements for the screen on which the picture is projected: the canvas must be of high quality, without seams and defects.

Important! If you paint with black paint the inside of the box, eliminate the “leakage” of the light flux through the slots, the quality of the picture on the screen will improve significantly.

Original solutions

Similarly, a smartphone-based device can be used to make a home-made 3D projector with your own hands or to construct from improvised means, such as CD boxes, a home-made laser projector for displaying holograms, only these options are more labor-intensive, and the costs will be from 8 to 15 thousand rubles.

For 3d devices need a special size pyramid of plastic, the dimensions of which can be found on sites on the Internet.For example, this is an option: height is 45 mm, the entrance truncated hole is a small square of 10x10 mm, and the lower part is 60x60 mm. Then we place this original design on the smartphone in the exact center of the screen and turn on a pre-selected video story.

Before you do the projector yourself, it is necessary to clearly define the purpose of its use, the chosen type of construction will depend on it.

1. If you want to surprise not only the younger members of the family, but also the older generation, then do holographic projector, upload various videos from YouTube to your smartphone and show magic holograms.
2. On the basis of a mobile phone, you can make the original design and twist cartoons in the nursery at any time.
3. When you really want to watch exciting films, like in a movie theater, and there is no material resources for this in the family budget, then make a projector with the second option - surprise home theater in your apartment.

For the implementation of the plan, you just need to attach a little fabrication and purchase not so expensive components, assemble according to the instructions and enjoy watching.