Jump to Main ContentJump to Primary Navigation
Top

How to make your own smartphone projector

projector1.jpg

Projectors - you don't need one, but you really want one. 

The good news is, you don't have to splash out a few hundred quid for wall-illuminating media kits. In true Blue Peter fashion, you can make your own projector with a smartphone and a few odds and sods.

No, it's not going to compete with a 'proper' projector - but it's a neat addition for that house party you were planning. 


What you need

- A cardboard box, ideally a shoe box with a tight-fitting lid

- A craft knife

- Large and small bulldog clips

- LEGO/A large paperclip

- Tape

- A magnifying glass, around 10cm in diameter

- A glue stick



Projector

Ready your box

Yes, that is an immature title - but you're going to need to cover every hole and gap in your chosen box. Make sure no light can get in or out. 

In one end of the box, you're going to want to make a circular hole a little smaller than your magnifying glass. Ideally, you'll want to pop the lens out of the glass (the handle will just get in the way), draw around it, and then cut slightly inside the line with your craft knife. You'll then want to glue the lens to the inside of the box, aligning it with the hole.

If you plan on watching films with the projector, you might want to cut a small hole in the side of the box to thread your charging cable through.


Projector

Make a stand

Not a political one, but rather something to stand your smartphone up horizontally inside your box. This is where the LEGO or paper clip comes in. 

If you're using LEGO, try building something that will see your smartphone stand upright without a hint of tilt. Likewise, unfold the paper clip and try bending it into different shapes - a simple solution is straightening out the wire, folding it into a right-angle and punching each exposed end through the bottom of the cardboard box to create a triangle.

Have a play.


Projector

Ready your phone

To ensure your projector emits a viewable image, you're going to want to tweak some settings on your smartphone.

Foremost, you're going to need to flip the image - else it'll appear upside down after passing through the lens. You should be able to find this option in the 'Accessibility' section of your phone's settings menu - or try downloading a flip app, like this one.

Next, boost your screen brightness to the max. If you've got a wireless speaker, be sure to connect that up as well.

Finally, you'll need to play around with adjusting the focus of the image. To do this, line your box up with the wall you want to project onto, turn off the lights, and - starting with your phone next to the lens - slide your phone (and its stand) toward the back of the box. At some point, the image on your wall will become clear. Mark this position in the box with a pen, pop the lid on and you're off.

For more help, try this brilliant free guide from Mat Bothell on Instructables.

Projector

Related

iphone1.jpg

The iPhone 6S Isn't Going To Bend

wet.jpg

How To Fix A Wet Phone

charge2.jpg

How to make your phone charge faster

eclipse.jpg

20 Best Cycling Gadgets

cable2.jpg

How To Stop Your iPhone Charger From Breaking So Easily

slow.jpg

How to make your phone faster and cure short battery life

Comments

More

An awesome paper cycling helmet wins Dyson design award

Only £4, and it'll save your life

by David Cornish
17 Nov 2016

Netflix finally confirms it's working on downloadable content

It's official, people

by David Cornish
03 Nov 2016

How Android users can now cast Harry Potter spells on their phone

Well this is neat

by David Cornish
02 Nov 2016

David Bowie among the 72 new emoji coming to iPhones

David Bowie is getting an emoji

by David Cornish
02 Nov 2016

The 4K TVs your eyeballs have been waiting for

And they won't break the bank

by David Cornish
01 Nov 2016

Everything you need to know about Apple's new MacBook Pros

Return of the Mac

by David Cornish
28 Oct 2016

'Apple of China' just released the best looking phone ever made

Your move, Apple

by David Cornish
27 Oct 2016

There's a secret one-handed keyboard hiding in your iPhone

For some reason, Apple isn't making it more widely available

by David Cornish
24 Oct 2016

Why your iPhone battery keeps dying at 25 per cent

Battery life not performing how it should? Here's some help

by David Cornish
19 Oct 2016

The big problem with Google trying to get us to talk to our phones

Google's new Assistant could change everything, but just not for this generation

by David Cornish
05 Oct 2016