Projectors have come a long way since their invention and now have become the main source of entertainment and infotainment on many platforms.
If you want to have friends over for a movie night, or if you want to project your laptop screen on a wall for some project, but unfortunately, you can’t afford a projector, then we will show you alternative ways you can do it.
Projectors are not only expensive but also require a consistent power source. Hence, if you were planning to have your movie night outdoors, then even having a projector won’t help you much.
Hence, in this article, we will guide you to build your own DIY home projector that you can use to project your laptop screen on the wall.
You might think building this projector will require advanced equipment and skill, however, that is not the case here. This projector is really easy to build and you can build it with simple equipment that will be available at your nearest store.
So, without wasting any time, let’s get to important details on how to build your own projector.
- 1 How to Build Your Own DIY Home Projector for Laptop
- 2 How to Flip the Laptop’s Screen?
- 3 How to Project Image on Wall from Phone Without Projector?
- 4 How to Project Image on Wall from Flashlight?
- 5 Frequently Asked Questions
- 6 Some Last Words
How to Build Your Own DIY Home Projector for LaptopWhether if you want to project a movie on the wall or just your laptop’s screen for some presentation, this DIY projector will do the job for you.
1. Things You Need
To build your own projector, you will need some necessary items. First of all, buy the following items from your nearest store to start with the projector.
- Cardboard Box
- Fresnel Lens (Magnifying Lens)
- Black Paper/ Black Paint
- Double-Sided Tape
- Glue Stick
- Pencils and Ruler
once you have all these things, and of course a laptop, you will be ready to begin the process of building your own projector. Most of these items are easily available at your nearest stores. You can also order them online.
2. Find the Right Size Cardboard Box and Lens
You also have the option of making a DIY projector for your mobile, we will explain that process later in this article, as it will require a smaller box and lens and will cost even less.
However, for your laptop, you will need a box of larger size. A large cardboard box will be suitable enough for the job. Make sure the box has enough space to place your laptop inside and then close itself so that no light from outside goes into the box.
Next, the size of the lens is also important. For a laptop, you will need to buy a Fresnel lens whose size is equal to that of your laptop’s screen. This will result in an effective and clear projection of your laptop screen.
Remember that magnifying lenses will flip the laptop screen while projecting, we will come to this aspect later and how to resolve it.
Once you have found an appropriate lens. You can move to the next step.
3. Install the Lens
In this step, you will install the lens in your cardboard box. This is an important step and will require you to place the lens accurately in the box. Hence, get more than one box so that even if you ruin a cardboard box, you will have spare ones to take its place.
You can get cardboard boxes for free so it won’t be much of a problem.
First of all, turn the cardboard box on the side so that the smaller side is on the bottom and top. Place the lens on the box and mark the lines with a pencil on the box. You must place the lens on one end of the box so that it looks like the lens of the projector.
Once you have marked the lines, remove the lens and cut the box in that place with a knife. You can also use a cardboard box cutter or a razor blade. Make an accurate cut on the line and then insert the lens into the box.
Once you have inserted the lens, fix it in its place using the tape. Once the lens is fixed, you can move to the next step.
4. Attach the Black Paper or Apply Black Paint
For the most effective projection, you need to blacken all the walls inside your cardboard box. This will eliminate all possible refraction of light and give you a clear image.
Imagine it like a cinema which is blackened on all sides. This cardboard box will be the mini-cinema.
For this purpose, you can use black paper or black matte paint. If you are using black paint, then simply paint on all the inside surfaces of the cardboard box. After you have painted all the sides, leave it for some hours and let the paint dry.
Remember to cover the lens and don’t let it get tainted with the paint. You can cover the lens using paper.
If you are using black paper, attach it using the gum on the back sides of the paper and make it firm by pressing it. You must make sure none of the paper is loose or hanging as that will hinder the projection.
You can also use glue on the inside surface of the box beforehand for better attachment. However, you mustn’t use the tape, as the tape is reflective and will be problematic if used inside your homemade projector.
5. Place the Laptop inside the Projector
In this step, you simply need to place the laptop inside the projector. You can turn the laptop to its sides to fit the cardboard box. Once the laptop is placed in an accurate spot, your homemade laptop projector is almost ready.
There’s just one step remaining that will adjust the direction of the video. Remember I said that the lens will flip your laptop screen. To resolve that, you need to flip the screen beforehand so that when you project, the screen appears straight.
After you have done that, you can enjoy watching movies on your newly made cost-effective homemade projector. This projector neither needs a power supply nor any maintenance.
How to Flip the Laptop’s Screen?
If you don’t know how to rotate your laptop’s screen, then you have come to the right spot. We will provide you with a step-by-step guide on how you can rotate your laptop screen.
You have two options, you can either rotate the videos using a video editor or flip your laptop’s screen entirely that you can change later after watching the movie.
If you want to flip the screen, then the process is very simple. Here’s what you have to do:
- Go to Start Menu and Open Control Panel from the left-most vertical tab.
- Once you have done that, go to Display settings.
- Find the option Change Orientation of the Display.
- You can simply choose flipped landscape orientation.
- If you aren’t using Windows 10, then you can locate the Control Panel and the rest is the same.
However, flipping the screen sometimes annoys the users as they would have to change it again and again. So, how about you rotate all the videos that you are going to watch on the projector.
The process is simple. Open the Video Editor that is already installed on Windows 10. If you aren’t using Windows 10 then you will have to download and install the Video Editing software.
Once you have opened the video editor, load the desired video on it and rotate it by pressing “Ctrl + R”. Then save the video as a new file in your drive.
When projecting, play this rotated video and you can experience the best projection from your DIY projector.
How to Project Image on Wall from Phone Without Projector?
The process of projecting from mobile phones is quite similar to the process mentioned above for laptops.
You will just need a smaller box, like a shoebox, and also a smaller lens. The lens should be similar in size to that of your mobile phone screen, or you can simply get a magnifying glass and cut the handle off. Fix the glass on one end of the shoe box.
As I said, the process is similar to that of the one mentioned above, you just need to get everything smaller in size. The rest is the same.
You can also make a stand for your mobile phone so you can smoothly move it forward and backward inside the box. This will allow you to make the size of the projected screen bigger and smaller.
Make sure the brightness of your screen is at maximum so that you can get a clear picture on the wall.
Hence, with just some basic home supplies, you can make a DIY projector for your smartphone. This will help you enjoy the movies a lot more at night as you watch them on a large screen on the wall.
How to Project Image on Wall from Flashlight?
If you have some old pictures in your home that captured some of your most precious memories and now you want to watch them on a large screen. Fortunately, you can do that by just using a flashlight and Fresnel Lens.
Simply point the flashlight on the wall and place the Fresnel lens in front of it so that the light shines through the lens.
Place the subject image under a lamp near the lens. Rotate the lens so that it focuses on the subject image. You will have a projection on the wall.
To get a clear image, you will need to adjust the position of the image and lens several times, as the focal length of each lens varies with size.
Once you get the right length, you can simply replace the pictures and enjoy your custom-made slideshow in your own image projector.
Frequently Asked Questions
How can I project my laptop on a wall?
Well, there are two ways to do that. You can either buy a projector or you can make a DIY projector at your home. Since projectors are very expensive, you can go with the latter choice. We have shared a detailed guide on how to create one in the above article.
What can I use instead of a projector?
You can use a DIY projector that is made from simple office supplies and a magnifying lens. The projector is both cost-effective and easier to make. You just need to follow our above-shared guide in order to make a projector for yourself.
Some Last Words
If you also think that projectors are too expensive and you just want to enjoy a movie night with friends that make one of your own. This article shares a detailed guide on how to make your own projector from simple supplies. Let us know in the comments whether how effective you found your DIY projector.