Picture of DIY Multimedia LED Projector (video manual)
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DIY projector WATS.jpg

In this Instructable, I show you how to make a LCD projector with a LED as the light source. I tried to make videos of everything so it is easier to follow the steps.

Este Instructable esta en versión en Español 

See more cool projects on my blog.

  After making my first LED projector that you can see here , I had lots of questions and people interested in the projector. Some of them went ahead and did something similar like mcastles. 

I felt sorry that I could not give more details of the making of the projector. Also the MP4 player that I used is not longer available so many people could not find an MP4 with composite input like mine.  I decided to make another one, so you could actually SEE how to do it.

This type of projector is very energy efficient. It only consumes about 41W. A normal projector with metal halide lamp will consume about 260W plus a DVD player which can consume between 20w and 45W for a total of about 300w. That is a saving of a lot of money by the end of the year. Although the quality and brightness of a conventional projector will be better, you'll have to pay the price, and the environment as well.

Another good feature of this projector is that the LED should last about 10000 hours of use wile a conventional projector lamp lasts about 2000 hours.

Lets see the result of making this projector.

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Can I use the projection lens of real projector? Will it make any difference in performance?
Where did you get the heatsink?
anayak51 month ago

which mirror we use for changing the projection direction and which angle tell me

and when we change the direction of projection through mirror projection quality down or same please guide me and my email id

anayak51 month ago

which mirror we use for changing the projection direction and which angle tell me

and when we change the direction of projection through mirror projection quality down or same please guide me and my email id

kehaldoshi1 month ago
I wnat to add mirror in my pj. Can i use any type of mirror or special one ?
CaseyS22 months ago

How black are the blacks? Does a lot of light shine through when the image is supposed to be black? A.K.A. the contrast ratio

eteal1113 months ago
How big is the final product??
vmw3 months ago

Very cool project !

- After seing it, I made a testing attempt, with "Samsung Digimax S500" (or, Digimax D53). But I fried its main board. So all I still have, is the LCD, and other parts..

But now I have two questions, how can I reuse the LCD ? and, is there a way to do it with arduino, and keep the original resolution ?

Here is the service manual of my camera :

on page 76, there is a schematic diagram of the board connections to the LCD.

the CLD part number is : LTV236WQ-F09

here's the picture

And I have an "arduino Uno"

any kind of info is much appreciated, thanks allot, in advance ;)

newtonn2 (author)  vmw3 months ago

Hi there. I'm glad you like the project, thank you very much. I can't help you with that, I have no idea. But generally it is best to get another one. It is better to use one with video input, as if you use a camera LCD, it will be difficult to get that to work with an AV input.

Sorry I can't help much.

vmw newtonn23 months ago

Hi, thanks for the comment.

- Well, I figured as much, couse, I don't have a clue ether :) though, buying one like you mentioned, is about the same like buying a used projector... What if, I get a projector with an expired lamp, and try to replace it with LAD's ? :) just a thought.

Aside from that, I'm still going to look for ways to implement the present LCD.

Well, any input is still welcome, thanks again, all best.

Garra234 months ago
can y'all help me out and give me some way of finding freznal lenses or give me alternatives to a freznal lenses.....I read somewhere that the lenses in reading glasses would do but don't know
Garra23 Garra234 months ago
never mind guys I looked into it and found what I need. thx anyway
MihneaC4 months ago

is this working well with a vga/composite converter? And how is the quality compared to other projectors?

willianmp6 months ago

I have a very old camera panasonic m7 and running, I wonder if I can use the front where the lenses are. Has manual adjustment of focus and altomatico. If she will will work by sending light with good quality in my projection.

rajivshahi7 months ago

has anyone tried to use amoled screen and any success ????

Mega_Hobbit7 months ago

Thank you soooooo much for your tutorial :D It's been fantastic! I've almost almost almost finished with it - I literally need to wait for one lot of glue to dry and glue something else then I'm done. That's it, poof! Earlier you said "send me a video of your finished product" so I will tomorrow. Cause glue drying... eh. But seriously I can't thank you enough for providing me with weekends of fun :D

wannado8 months ago


first to say great job!! On the projector and instructions as well. But...i am stuck :) and hope you could help me out a little. I am confused regarding fresnel lenses. Where to put them? 1st image shows one lens before and one after the LCD but you put them together and put them before LCD(before would be LED side, and after lens side). And how close should fresnel be to LCD?all the way, or?Thx ;)

newtonn2 (author)  wannado8 months ago
Thank you very much. You can add the two fresnel lenses together before the LCD screen. If you want to adjust keystonning you need to separate them and have one b4 and the other after. You need to adjust the distance, but not to far really. I always give it a rig test before thinking on the side of the box.
wannado newtonn28 months ago

Oh it makes sense. I will skip keystonning for now...I just want to make it work first :) and the image will be in the same level as the projector so i want to make it as simple as possible. Thanks again for all the help!!!

btw. i got my eye on ATX power supply as well. :). i am in great need of one of those. Great job again!


Mega_Hobbit8 months ago

My lens flips the image and I have no Idea why? Is that normal?

Mega_Hobbit8 months ago

Do the mirrors have to be cut to a certain size? Like if I have my 10" panel will I need a 10" mirror?

Mega_Hobbit8 months ago

I'm gonna try this with my 10" 1366x768 monitor and 50W LED but do you need one of those massive lenses or can you just use an OHP lens?

newtonn2 (author)  Mega_Hobbit8 months ago
Hi there!
That's cool, please share some photos once you have ir working.
You can use an OHP lens. Just make sure it is a triplet lens.

Well at the moment I have the lcd sitting on the OHP and it seems to work ok but it's a bit dark. I'm also already using the LED. So I'm thinking it should work - thanks for all your help :)

h1s0k41 year ago

I'm going to make my own with a 7" 1280x800 LCD , that must be a challenge ! Thanks for your sharing !

how much did anyone pay for the stuff

nerd74731 year ago

Cool I like this instructable very inspiring

got mine working. but due to this being 330mm fl lenses you have to place it verry far away to get a decent size projection. how did you fix it or how can i ?
newtonn2 (author)  siemenwauters2 years ago
Hi there! I'm glad your projector is up an running. The best thing to do would be to replace the lens. The lens I used is a varyfocal length.

I hope you can find something suitable.

I am going to build this, but i just need help with the lens.
I want to know if this lens will create a decent size projection and throw range.

if not, can you please post a reply with some sort of specific lens to look for or give me advice, Thanks!
newtonn2 (author)  Sunny013311 year ago
Hi there. It is difficult to tell just looking at the picture, they did not give any info. Mine is an LCD projector lens, so for that price I would give a go an try.
What is the size of your LCD?
Its quite big at about 7in. Should i try for a smaller screen, or is there a way to make it work with this one?
i dont have as much luck as you do i guess. the image is real sharp just not verry bigg.
It work with this ?
Peace17391 year ago
Dear Newton2,

Excellent work and congratulations! your project has made me to pick up my old physics books :D
I am planning to do make one for myself, please can you help me with some queries when you are free?
1. Do we really need fresnel lens (say it is a single piece), if yes, do I need to place in front of the LCD?
2. If I go with a LCD controller kit with HDMI input port, can I have my iphone/laptop connected so it takes input from these sources?
3. May be a stupid question, are zoom lens & projector lens same?

Many thanks.
I found condenser lenses that are coupled with diffusers to collimate the light. It seems like using one of these would eliminate the need for at least one of the fresnel lenses. Does anyone know if this is true?
Hi, I am planning to use this instructable as the basis for my own project and have a couple questions. 1. Do you know if it is possible to project through an AMOLED screen instead of an LCD? I was thinking to disassemble a used Zune HD, because it will be really easy to reuse the audio components as well as the screen. 2. Instead of using all the individual capacitors and resistors you have listed above, can I just use an LED driver power supply? There is a good pairing on Ebay of a 50w 5000+ LM LED and driver here for pretty cheap: Thanks!
newtonn2 (author)  jonnyglobal1 year ago
Hi there!

I don't think you can use an OLED display unfortunately.

The best thing will be to buy the LED driver.

i have made one but the projection size is same as lens size
help plzzzzz
chiopra1 year ago
can u help me ? i am using PSP LCD , the light coming from led just stops when it reaches the LCD screen . what should i do ? help me
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