Homemade Mobile Projector

Homemade Mobile Projector – Did you know you can turn an old shoebox and some stationery into a smartphone projector? Yes, you can! This is a fun, simple and easy physics experiment that you can do at home. Learn and watch the light

The project has been online for a long time, but here is a short and detailed tutorial I made for everyone. (Most of my new videos will be as short and detailed as possible. Enjoy!)

Homemade Mobile Projector

As of this writing, there are two main types of projectors in use (things change quite quickly in the field). Projectors come with many features, strengths and weaknesses, but most will run on LCD or DLP technology. LCD is an older technology, but that doesn’t mean it’s becoming obsolete by any means. LCD stands for liquid crystal display. The way the image is placed on the screen is fascinating and not as complicated as you might imagine. The light bulb is set to shine a fairly strong light through the prism. The prism separates the light into its component colors, which are directed through small LCD screens. The screens themselves send signals to allow as much light to pass through in certain pixel locations. The light is then directed through a lens onto a screen where the image can be seen by the human eye. DLP or Digital Light Processing is a bit more complicated. This time, the light shines through a spinning color wheel onto a chip that is mounted with hundreds of thousands of tiny mirrors. The mirrors are turned off or on by electronic pulses depending on the need for color at that moment. Although only one color is displayed at a time, one color changes after another so quickly that it appears that the primary colors are merging into the corresponding color. The image appears to be constantly illuminated, while in fact small parts of it are constantly flashing. This technology was developed by Texas Instruments and is based on an older technology used for color television in the 1950s. Knowing the difference between these two types of projectors can be important, as LCD is considered best for static or high-contrast images. DLP, with its brighter colors, is considered the best for video. Some DLP projectors are known to exhibit a rainbow effect. This can happen when white objects move against a dark background. Small shadows of red, blue or green may be visible. Most modern DLP projectors have overcome this problem with multiple chips and faster color wheel speeds. So, what can we use these amazing machines for?

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Place the box in an upright position. Place the magnifying lens on top and then in the center. Trace the cut line with a pencil.

Here’s a simple trick I’ve used all the time. If you’re too clever, you can use the XACTO knife on the other end of the compass to cut a perfect round hole.

If you put the cap back on, the cap may block part of the lens (depending on the size of the lens or the box). Use your precious cutout as a stencil, then carefully cut away the excess cardboard covering your lens.

Build a foam phone stand. Make sure it is placed perpendicular to the base to avoid image distortion.

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The lens inverts the light source (your phone’s LCD) into a projected image. This means you’ll need to place the phone’s screen inside out to prevent it from rotating automatically. Set your lock screen settings and turn off auto-rotate.

Like all projectors, this one also requires calibration. Place your phone at the very end of the box, then slowly move it closer to the lens, you’ll notice the image becomes sharper/softer. Move it back and forth until you get the sharpest projection.

I’m back guys! During my very long absence from posting projects here, I’ve been filming and compiling lots and lots of video tutorials to keep my new channel going. Every week I will post new and random projects. We use cookies to make great. By using our site, you agree to our cookie policy. Cookie settings

This article was written by staff. Our trained team of editors and researchers review articles for accuracy and completeness. The content management team closely monitors the work of our editorial staff to ensure that each article is backed by solid research and meets our high quality standards.

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This article cites 7 links found at the bottom of the page.

It is very easy to make a smartphone projector with your own hands from materials that you already have at home. You will need a small cardboard box, such as a shoe box, a magnifying glass, and a few other things. Once you’ve assembled everything, your homemade projector will allow you to show your movies and slideshows to friends and family from the comfort of your own home!

This article was written by staff. Our trained team of editors and researchers review articles for accuracy and completeness. The content management team closely monitors the work of our editorial staff to ensure that each article is backed by solid research and meets our high quality standards. This article has been viewed 37,540 times. Home » Articles » STEM » STEM Engineering » How to make a cardboard projector using a smartphone and a magnifying glass

How cool would it be to show a video of your amazing vacation to all your friends at a party? How about watching a movie on the big screen outside? Hmm… If only you could turn your smartphone into a portable projector, but that’s just a fantasy… Right?! Today we will show you how to make a projector using a smartphone, a magnifying glass and an ordinary shoe box. Content of the article 1. Types of widely used projectors

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There are three types of projectors that we commonly come across. Two of one are slowly going down in history. These are DLP (Digital Light Processing), LCD (Liquid Crystal Display) and CRT (Centre Ray Tube) types. They differ depending on the technology they use to project the images.

CRT projectors were among the first widely used projectors. With today’s technology, they are obsolete and used less than their more advanced counterparts. They use 3 tubes, one for each of the three complementary primary colors: red, green, and blue. If you want to learn more about colors, check out our article on color mixing and learn all about it.

The biggest disadvantages of CRT projectors are their large size, low light output, and the frequent need to align three tubes to get the image right. For this reason, they are mostly being replaced by friendlier LCD and DLP projectors.

LCD projectors use polarized mirrors that reflect and transmit only certain colors of light. First, the red, green, and blue colors are separated and passed through an LCD panel that controls the intensity and saturation of each color. After passing through the LCD panel, the colors converge again with the help of a prism, and we get the desired picture.

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There are two types of DLP projectors based on the number of chips they contain. There are single-chip and three-chip models. Each chip contains millions of mirrors that reflect light thousands of times per second. Single-chip projectors can produce more than 16 million colors, and three-chip projectors can produce more than 35 trillion colors. Really impressive! This makes them suitable for more realistic and natural images.

They are able to produce a sharper and more fluid image than LCD projectors due to the closer proximity of each mirror. It also makes the pixels closer together and it’s almost impossible to see the space between them.

The brightness of the projector is measured in lumens. The size of the room and the size of the image we want to project are the most important factors that determine the lumen required for a clear image. In small rooms and if we are projecting on a small screen, 1500 to 3000 lumens will be enough. But in large rooms and on large screens (think of a movie theater), we need 10000 to 28000 lumens for a clear picture. In addition, ambient lighting affects we need a lumen. The higher the ambient light, the more lumens we need to see a clear image.

As with brightness, distance and screen size also play an important role in the lens we need. If the projector is close to the screen, we need a short focus lens. If the projector is broadcasting to a large screen and placed in the depth of the room, we will need a long lens. All projectors have a lens that specializes in one of these functions. All of them can be adjusted and focused to some extent, but can never play a good role in long and short throw

How To, How Hard, And How Much: Diy Smartphone Projector

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