Make a Cheap 3$ Projector


Introduction: Make a Cheap 3$ Projector

About: There are tree things i love in my life... Girls, Games & Gaming Laptops.

I'm gonna show you how to make your own 3$ Projector with things that you probably already have. Its cool for you to watch your photos and movies and it's portable so you can take it anywhere.

To make your own 3$ Projector, you will need:

1 - Magnifying Glass
2 - Hot Glue
3 - Cutting Tool
4 - Box(any kind of box will work, i'm using a Cardboard Box)

It's not as good as a real 200$ Projector but its good for a 3$ Projector...    : )
If you liked this Project vote on it, in the Camera & Photo Skills Challenge and in the Green Living & Technology Chalenge! Thanks

Step 1: Preparing the Magnifying Glass

Remove the Magnifying Glass from it's casing until you only have the Magnifying Glass itself. Use a plier or something like that to remove the case. You can also use others Magnifying Glasses to make this projector.

(If you need help, see the photos or comment)

Step 2: Preparing the Box

Now just make a hole with the size of the Magnifying Glass, mine isn't a circle, it's a square so i have to make the hole with the size of the circle part that magnifies. I used a bottle cap that was just the size of the Magnifying Glass(the circle part), to mark where i needed to cut.

Use the Cutting Tool to make the hole where your Magnifying Glass will be and, if you want, you can use a pen(with the color of the box) to paint the edges of the hole.

(If you need help, see the photos or comment)

Step 3: Making the Projector

To make the projector, hot glue the Magnifying Glass inside the Box and let it dry.

(If you need help, see the photos or comment)

Step 4: Using the Projector

To use the projector you will need your mobile phone or a mp4, just put the mobile phone or mp4 inside the box, i used some Playdough(plasticine) to hold it(see the photo). The image will be upside down so you need to flip over the phone so the image that will come out is normal. If you are using an iphone like me, you will need to turn off the accelerometer that makes the screen flip when you move it upside down.

(If you need help, see the photos or comment)

Step 5: Finished Projector!

That's all!

The finished Projector will look like the first photo.
And projecting a video will look like the second photo(it looks a little bit worse than it is because i took the photo in the dark).

If you liked this Project vote on it, in the Camera & Photo Skills Challenge and in the Green Living & Technology Chalenge! Thanks



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    Is there a way of double inverting the image so it flips back to the right way up using two glasses?


    Can anyone please tell me the glass power or pecular magnification glass type.I have bought a 4x magnification glass with 60mm wide and does as per the instructions,but only a blur image exactly there is only a blurred form of light and if i do with 6x glass with 2.2 cm radius i can see it only a small image.NOTE the the both lens comes on the handle of the same as a combo.Please someone help me to sort out,what is the problem.

    had to figure a way with the small box and magnifying glass I had, but I impressed with a "first try"

    2 replies

    what kind of magnifying glass did you use?

    a standard glass from a set of "helping hands"

    I tried this but I only get a white light image. I tried focusing back and forth but nothing happens. What magnifying glass did you use? I think it's the problem. When I first tried it, I use my moms eye glasses (which is concave obviously) and I see some flipped blurry image with colors slightly visible so I thought It would really work If I buy a real magnifying glass but It does not work so I'm thinking that the magnifying glass needed should be concave.

    While your phone is inside a box?

    HEY!!!! I KNOW YOU, you're from that you tube channel called house hold hacker

    How do you do that with the accelerometer?

    Been looking for a long time can't wait Tory thx

    Credit the source of your content.  This is quite obviously stolen.

    i tried this project a hundred time but it does not work I am sure I follow your structure step by step but the result was like a normal torch please help because I am so interested>>>
    anther question is if I want use a mirror to improve the quality should I use a normal mirror or a Convex mirror or .....?????
    thanks so much

    if i wanted to use my laptop, would this system work? assuming that i used a box big enough to put my laptop in. and maybe a bigger magnifying glass.

    i wonder if i add a bulb if it will be brighter


    I tried this projector with a condenser lens {picked from a film still camera} ,so that i get a small and dim image


    Interesting project, but don't you need to focus the image? Does it come out clear enough? How big is the image and how far can you project it?

    1 reply

    To focus the image I simply move the box(projector) forward, or backwards. If you put the box to far from the wall, the image will get a little bit bigger but blurred. The image is a little bit dark compared to a real projector, but for 3$ what could we ask more? Thanks