DIY- homemade projector

i will show you how to make a homemade projector using mostly things you can find around the house. (remember to read the whole thing before you start because i am adding new info at the end as i learn more, im a beginner 2)

Step 1 What you will need

you will need a large cardboard box, i used a cornflake box, you need a fresnel lens and a regular magnified glass i found the fresnel lens at a shop advertised as (credit card sized magnifier) for about 5 bucks and the magnified glass should be about 2inches across, you also need a bright light, the brighter the better but led is good because it needs to be cool or else you will cook the lcd i got the lcd from ebay for $28.00 and it allows you to plug anything into it. you will need a round cylender the same width as the magnified glass (i used pringles chip container) the last few things you will need are aluminum foil ,tape and scissors.
i bought that square looking led light of ebay for $20 but i cant use it yet because it needs a heat sink and fan, the other one runs cooler. 12v

Comments

[guygalgut101]

Do I have to use the frensel lens or can I do it with out it?
what does the frensel lens do?

[booliminator]

I was wondering the same!
It doesnt seem to be required because of its placement... i Guess?
Dont trust me thou!

[booliminator]

I am in the process of attempting the same project.
Yours is amazing.
I am using a sprint pocket pc with a touch screen so it might be a problem accessing media but it will do.
I just had a few questions?
DO i need a frensel lens?
What kind of light should i use? (how bright?)
and
can i use a slr camera lens instead of the magnifying glass u used in the front?
Thanks
and please help me!

[supreme-ette]

What kind of projector is this? Could it project a movie/vid, or just a still image?

[porkypinekiwi]

well you can either make an old fashioned slide machine or you can use an lcd screen like i did and all it does is makes the screen bigger so yes you can watch movies on it!

[porkypinekiwi]

its an lcd screen with composite cables (red white and yellow) so yea video, image and music!

[supreme-ette]

Could I get that type of LCD from an out of used digital camera?

[osmith3]

you need an LCD panel which will take the type of video signal you wish to use it with - so, if you want to project Television, your LCD panel will probably come from a miniature LCD TV which has a Scart socket on it, or if you want to project a computer screen, your LCD panel will have to come from a flat-screen computer monitor.

Unfortunately, this does usually mean taking some expensive equipment apart - like a TV or computer monitor! - but the good news is that you could use equipment that isn't working properly. Look for a computer monitor with a broken backlight, because you don't need that part to use it for this build.

[osmith3]

this is ingenious!

[jothi.instru]

hi.... can u say wat is that fresnel lens mean... is those available in shops...

[simbu.rm]

hi Fresnel lens very low cost of ebay.in for just Rs.675/- only

simbu

[porkypinekiwi]

yes you can get it in a shop its some times called a credit card sized magnified glass. its just a piece of plastic with lines on it that that makes it a flat magnified glass. ill put a new instructable up soon to make it easier

[priyank9755648457]

from where i will get the lcd?
any other types of lcd can be used which are available in indian market in low cost?

[simbu.rm]

hi priya you can get lcd very low cost of ebay.in

simbu
9843774939
pondicherry

[mohsin2202]

triplet lens is best but u used Magnifying glass. tell me hows image quality? n focus.

[porkypinekiwi]

i dont even know wha ta triplet lens is? the magnifying glass that i used is watchable but you cant get it focused everywhere, its either focused in the middle or just around the edges. it would be nice if i could fix that problem

[katareprat]

Awesome ! It inspired me to make my own one too :)
I'm currently looking for a fresnel lens. Can you please tell me if this one could do :
http://cgi.ebay.in/Fresnel-Lens-Replacement-Part-4-Nikon-SB-600-glass-new-/140560494012?pt=LH_DefaultDomain_203&hash=item20ba0eedbc

there's also a bigger one :
http://cgi.ebay.in/BIG-TV-100-INCH-DIY-PROJECTOR-TELEVISION-FRESNEL-LENS-/110687737615?pt=LH_DefaultDomain_203&hash=item19c580d70f

I'm asking as my LCD size is different from BOTH of these..so I've no idea if these lenses will or will not do

Thanks for the wonderful 'ible !!:)

[rcisneros]

Check out this vendor. They sell screen by the yard for front and rear projection. You can check out their tutorial about colors to find out which one would work best for you.
You can get 55"X36" for $18.30 / yard. So obviously 55"x72" screen would be $36.6 plus shipping of about $15+.

http://www.rosebrand.com/product703/Projection-Screen-and-Rear-Projection-Screen.aspx

[katareprat]

Thanks a lot but I guess the screen is usually not the biggest problem..you can always use a wall !
What I'm looking for is the fresnel lens..these are the most hard to get..especially since now nobody uses slide projectors !

[rcisneros]

Your missing the point. It's a giant lens. It's not just some cloth. The screen is the lens.

[porkypinekiwi]

i dont think the first one will work, i used this (link below) you only need one but it comes with 2 and you just cut it down to match the size of your lcd screen. http://www.amazon.com/Pack-Page-Size-Magnifying-Sheet/dp/B001NDLUQQ/ref=sr_1_1?ie=UTF8&qid=1307781154&sr=8-1

[katareprat]

alrite. Although I live in India and hence can't afford the one you suggested,I do understand that buying a lens bigger than the screen should not be a problem. So will try to find one !! Thank you !!

[osmith3]

Katareprat, it is very easy to get Fresnel lenses of many kinds here in the UK - if you would like me to buy some for you, I can get two the correct size (55 x 85mm) and send them to you in India for £6 (about 450 Rupees).
This is also by Airmail, so the UK Postal service (Royal Mail) say that it should arrive in approximately 7-10 days.
If you are interested then do email me and I would be happy to help!

[katareprat]

Thank you osmith !!

I found this on ebay :
http://cgi.ebay.in/3X-10X-Magnifier-Magnifying-Glass-w-LED-TORCH-UV-/250779781782?pt=LH_DefaultDomain_203&hash=item3a63a3ca96

and this :
http://cgi.ebay.in/First-Aid-Kit-Magnifier-Light-/280712282609?pt=LH_DefaultDomain_203&hash=item415bc181f1

I'll give these a try and if they don't work, seek your help !
Many thanks again :)

[osmith3]

no problem - just let me know! :)

[The nerdling]

1 Can it work with a olympos cmera LCD?
2 Cool
3 wow
4 is it easy?

[porkypinekiwi]

1 yes it can work with any lcd as long as the lcd works! (you will probably have a camera permanently hanging off of your projector lol.
2 :)
3 :)
4 its not too hard, i can make one from scratch in a day

[PINKmonster325]

In answer two your 4th question, YES!!!

[porkypinekiwi]

 yes that should work but you will only be able to watch whats on the camera. yes cool yes wow and the first time it is  kind a hard but i made my second one in about 1hr but the hardest part is finding the right lens and a bright light that doesnt make too much heat or else it will destroy the lcd

[sanjay_lim]

can you elaborate on LCD? , which make ? part no.?

[porkypinekiwi]

it doesnt matter, any lcd that works will work. just take it apart, be careful with the wires and pull off the back light.

[delaneypratt]

sucks how you have to be a pro member to download the PDF

[kiramaya]

a normal maginifer will do the job,did u use a triplet lens

[porkypinekiwi]

no but i did use more than 1 mag glass/ fresnel lens

[swapnil24]

will you please make a video of each step that how you build it please...

[swapnil24]

will you please make a video of each step that how you build it please...

[cefurox]

what is your power source for that light? I have a strong lamp but I don't know how or what I should use to power it. Let me know, thanks

[porkypinekiwi]

my light was a 12v one so i either use a 12v battery or i found a cord for an old portable dvd player that happened to be 12 volts, just look around for cords that are rated for your wattage and voltage light

[COASTER19]

what light did you use? I have tried a bunch of lights, and none seem to produce a viewable image.
Thanks in advance

[porkypinekiwi]

mine isnt super bright, but just search on ebay "20watt led"