DIY Smartphone Projector – Makes Your Phone Image 15 Times Bigger (Tutorial)

My easy tutorial of how to make smartphone projector allows you to increase your phone image up to 15 times more! It means that you can get an image about 60 inch!

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For this DIY Smartphone Projector (that will REALLY WORK!) you will need: 2 shoe boxes (2! not 1!), magnifying glass (I used cheap magnifying glass which diameter was 75 mm), electrical or black duct tape, scissors and knife, black paint, a pencil and a ruler, smartphone (or even PAPER PHOTOS!).

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First step is to connect 2 shoe boxes. Mine were 33 cm each. So I’ve got 66 cm projector. You can take 1 large box (60 cm), but it should be narrow. How to connect boxes – watch in my video tutorial.
Next step – is to cut off a hole for magnifying glass.

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Next – to cover all holes in boxes to make the light pass through the magnifying glass ONLY!
Then paint inside of your boxes black! I used watercolor, but you can use gouache, spray paint, just glue inside part of boxes with matte black paper – whatever!
You’ll need a smartphone holder, so I made one out of a plastic bottle bottom (watch in my video tutorial).
Set the holder to the inside back part of the first box (that one which is without magnifying glass). Put your phone to the holder (screen should be turned to the magnifying glass).
Important! Phone settings! Turn phone screen brightness to the maximum. Turn off screen rotation. Flip your phone upside down (so ppl in video or photo will be turned – their feet will be up, and their heads will be down).
About focus and distance: tune the focus with moving your smartphone (with holder) backwards and forwards in the first box. Here are few tips about distance:
1. Distance from phone to magnifying glass – 60 cm, Distance from magnifying glass to the wall – 1 m, image size – ~8 inch

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2. Distance from phone to magnifying glass – 50 cm, Distance from magnifying glass to the wall – 1.5 m, image size – ~15 inch

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3. Distance from phone to magnifying glass – 40 cm, Distance from magnifying glass to the wall – 5 m, image size – ~60 inch

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So, turn off light in your room and start the movie! 🙂

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You can also project paper photos! Use a flashlight for this. Watch in my video tutorial how to set it right.

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So, watch this video, where I show how to make smartphone projector (and paper photos projector) and enjoy!


Good luck!

One thought on “DIY Smartphone Projector – Makes Your Phone Image 15 Times Bigger (Tutorial)

  1. Nice work, but as it can be seen from the demo video the glass doesn’t only flip the image vertically but also horizontally, so what you see is still mirrored. Any ideas to solve that (without a mirror that would make the system more complicated)?

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