I been working on this for about some time. I like to do thins that are not to expensive but does the job of something a lot more expensive. I think in this web page you can find lots of people doing the same, and that is REALLY helpful for all of us.
See more cool projects in my blog
Now you can find everywhere led projectors, some of them are really good, but also so expensive. You can buy a led projector here in Uk for about 100 pounds, but there are not to good, they need to be in a dark room and the size of the screen they project is about 21" witch is not really impressive.
So I thought i could try to make something similar, and if possible a bit better, and obviously a lot cheaper.
Here is the result, using 80 led of 13000mcd. I'm still not to happy about the result, because the light is not even, thats is because the angle of the LEDs do not allow them to be so close to the screen, so i decide to buy one of the new high power led and use it with a condenser lens.
I don't think i have pictures of the whole project but I'll try to gather as much inf and pictures i can to add it here.
Please keep in mind me english sucks and this is my first instructable.
In this video you can see the projector working, but in real life you can see the screen a lot brighter.
YO CAN SEE MY NEW PROJECTOR HERE
In this other video you can see the LEDs i'm using at the moment. (80pc 5mm led, 13000mcd) but soon i'll receive the 20w 1000lm high power led from hong kong. I'll post some videos as soon as i get it an try it.
And in this las video you can see briefly the led projector again, I'll try to make better videos and post them.
Thank you for reading and watching, I'll post the making of this projector step by step couse i'm a bit busy
See more cool projects in my blog
Now you can find everywhere led projectors, some of them are really good, but also so expensive. You can buy a led projector here in Uk for about 100 pounds, but there are not to good, they need to be in a dark room and the size of the screen they project is about 21" witch is not really impressive.
So I thought i could try to make something similar, and if possible a bit better, and obviously a lot cheaper.
Here is the result, using 80 led of 13000mcd. I'm still not to happy about the result, because the light is not even, thats is because the angle of the LEDs do not allow them to be so close to the screen, so i decide to buy one of the new high power led and use it with a condenser lens.
I don't think i have pictures of the whole project but I'll try to gather as much inf and pictures i can to add it here.
Please keep in mind me english sucks and this is my first instructable.
In this video you can see the projector working, but in real life you can see the screen a lot brighter.
YO CAN SEE MY NEW PROJECTOR HERE
In this other video you can see the LEDs i'm using at the moment. (80pc 5mm led, 13000mcd) but soon i'll receive the 20w 1000lm high power led from hong kong. I'll post some videos as soon as i get it an try it.
And in this las video you can see briefly the led projector again, I'll try to make better videos and post them.
Thank you for reading and watching, I'll post the making of this projector step by step couse i'm a bit busy
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Signing UpStep 1: All that you need.
Ok, we just see it working, lets see if i can tell you step by step how i done it.
This is all what you need:
-MP4 player with a screen of about 2" (the better the quality of the screen the better the projection will be) Try to get it with AV in, mine does. The price of this may vary depending on the quality. about $60
-Project box. (or any other box you will lite to use, i like this project box because they are strong and they have slots to hold things in place) $5
-An old slide projector lens. $1
-Small fan, i used a 50mm fan (Maybe you don't need the fan, depending on how hot the circuit with the LEDs gets, i put mine because the resistors that came with the leds are not very good and they get hot.)--- i took this from an old pc processor cooler.
-Small switch.--- I took mine from an old PSU (power supply unit) easy to find.
-Power connector.---Just take it from any electronic device that you don't use, or buy one that is gonna cost about $1
-Some cables.---Any cables, you could use cables from the same old PSU
-Fresnel lens (magnified lens)--$1
-LEDs, this one has 80pc, 13000 mcd 5mm--$20
Not a bad projector for under $100 , I spend a little less because i had the MP4 player hanging around.
Now the tools you'll use:
-Soldering gun.
-Dremel rotary tool. (with cutting disk, and sanding bit)
-Some screws to hold the fan in place.
-Hot glue gun.
And that its all what you need to start this project.
NEXT STEP SOON
This is all what you need:
-MP4 player with a screen of about 2" (the better the quality of the screen the better the projection will be) Try to get it with AV in, mine does. The price of this may vary depending on the quality. about $60
-Project box. (or any other box you will lite to use, i like this project box because they are strong and they have slots to hold things in place) $5
-An old slide projector lens. $1
-Small fan, i used a 50mm fan (Maybe you don't need the fan, depending on how hot the circuit with the LEDs gets, i put mine because the resistors that came with the leds are not very good and they get hot.)--- i took this from an old pc processor cooler.
-Small switch.--- I took mine from an old PSU (power supply unit) easy to find.
-Power connector.---Just take it from any electronic device that you don't use, or buy one that is gonna cost about $1
-Some cables.---Any cables, you could use cables from the same old PSU
-Fresnel lens (magnified lens)--$1
-LEDs, this one has 80pc, 13000 mcd 5mm--$20
Not a bad projector for under $100 , I spend a little less because i had the MP4 player hanging around.
Now the tools you'll use:
-Soldering gun.
-Dremel rotary tool. (with cutting disk, and sanding bit)
-Some screws to hold the fan in place.
-Hot glue gun.
And that its all what you need to start this project.
NEXT STEP SOON
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Thanks in Advance.
I have an old slide projector that I wnat to turn into video projector, following your instructions.
I didn't find any information about how to connect the projector to a computer...
Is it possible to project something directly from a computer ? How ?
Hi!, I don't think you can use a 3w or 1w LED. To get the screen bright enuf you need something more powerful. I'm sorry you can't get the right LED.
this confuses me a little. you say the power supply is 1.25 amp so for my example we will round up to 1.30 and the led works between 1.40 and 1.80 amps. with these numbers the psu isnt putting out enought amps to power the led. how is it possible that the psu is powering the led without the correct amperage? OR am i getting something horribly wrong.
You could use another LCD screen. There are some that you can connect to a DVD, VIDEO, etc.. in the comment somebody posted a link with a good LCD, I'll try to find it and send to you.
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 !!:)
all photo are there (i need update with projector at work)
http://picasaweb.google.com/exilaus/Projector?feat=directlink
- wood
- 12v input
- 2 ssc p4
- 2 for 30grad optics low cost from dealxtreme(pack of 10 2,xx $)
- frensel credit card
- lcd 1,8 http://sharonind.com/LCD/LCD018/LCD018.htm
- a part of optics from slide projector
- alluminim 5x5x2 (take from big heatskin)
- lm317 with resistor
in arrive from china : battery pack for cctv 12v 4800ma 230gram for convert it in travel projector
i have several question for you .
why we need lm317 ?
can i use lamp instead of LEDs?
can i use convex lens instead of frensel ?
thank you
use frensel for remove some spot effect from leds.
convex need try but frensel are to small.
my issue is i m unable to find fresnel lens,i don't know what is condenser lens and how does it work.you used old slide projector lens,is it ok if i use a manifyimg glass.will my china mobile's lcd work for this.plz reply........m waiting for ur guidance. thanx
Ashish
laptop LCDs use low-voltage differential signaling (LVDS) protocol which is very different from what ordinary displays use (VGA,HDMI,...) that is why you can't re-wire your laptop LCD to any different widely-used connector such as VGA.
You would have to make somekind of a controller to convert standardized VGA, RCA, S-video signal to non standardized LCD signal that your laptop LCD uses.
And making such a controller is unimaginably hard (close to impossible) if you are not somekind of an engineering genious .
Question: would using 2 of the high powered leds double the lumens and would you foresee any problems with doing that?
Thanks!
i don't know how to put an output (female?!!!) jack to its connections.
i want to completely isolate the lcd screen from the other parts of the project.
i really don't have any background electronics,please help!!!
I started by searching for 30W bulbs and found this. http://cgi.ebay.com/30w-CREE-LED-Flashlight-Small-sun-Torch-Tactical-light-/320424772406?cmd=ViewItem&pt=US_Flashlights&hash=item4a9ace0336 its a tactical flashlight called the "small sun" which apparently uses a 30W light. What's good about this is its both cheap (25 plus shipping) and it looks like it has that conversion lens you are talking about.
Any ideas whether its worth my money? Thanks a millionbillion.
Hi there!
I'm not sure if that torch would work. I would rather use the high power led.
It wont be a bad Idea to try tho.
http://cgi.ebay.com/1x-High-Quality-30W-White-2400Lumen-Save-Power-LED-y-/310220081620?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item483a8ec9d4
http://cgi.ebay.com/35W-HID-Xenon-Torch-Flashlight-3500-Lumens-Spotlight-/250589253828?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a584890c4
I'm thinking of powering this thing with a car battery anyway, so would there be a huge issue with HID other than perhaps heat?
Thanks
You could use the xenon. The only thing you'll need to improve is the cooling system as it will get hotter than the LED. I've seen people using this type of light source with a very good results.
Big fans, get bigger faster fans!
Or-
Cooling can be accomplished with a gold coated filter that blocks the infra-red. Heat can cook LCD displays easily.
(Sorry, no references or links to the IR filter are handy.)
nice vid and instructable, got to make me one of those.
a tip, use another switch for the fans, so the leds don't take damage from being near hot components.
i've been looking around for one but i can't find any
I've been searching for decent projectors on the internet, but the good ones are all cost £400 or above. And the quality of those bwteen £100---£200 seems bad (according to the reviews). And somehow I came to this page and saw what you did.
I wish I am able to do this.....
you need only wait....
newtonn2 for your battery external battery pack thinking on use of 18650 lithium cell (4.2v for 2.5mha)
18650 lithium cell fin inside a battery of notebook or buy charge and battery on previous site.
nice job
i start my instructables i find 1.8" composite monitor 533x244 of resolution :)
showup,i bought from it .
from document:
number of dots 558(H) X RGB X234 (V) DOT
for line si 558 X 3 DOT and when you project you see it!!
because you see same this picture on wall .
resolution of this display are same digital camera back screen.
i stop my project because have some problem :(
but i think restart it .
All the cells I found inside a notebook battery are 3.7v. It's a good idea. I used some of those cells to power some LED's You can see here.
Did you finish the projector?
This now my tests :
http://picasaweb.google.com/lh/photo/snxoRQRKVKIrTF5NUf5etg?feat=directlink (ssc p4 at 850ma light sorce module)
http://picasaweb.google.com/lh/photo/hX_sgu4YDHUCuarITAQcfw?feat=directlink (in use lcd and 30° optics on ssc , in a shady day)
The lens you have will not focus the corners and the center of the screen. I don't think you can even get everything evenly focus with the lens you are using. Am I right?
Do you have any suggestion on better LCD which is 1.8 to 2.1" size range with better resolution?
Any suggestion is appreciated.
thanks
Could you please send a picture or something? I don't really know what is a KB2 photo enlarger.
hoping for you that you make it and came with good news!
what dc did you use to light it up -would a laptop dc be fine, or do you need other add like driver or so,,?
i see that you using pentium2 cpu as a cooler do you think that's enough >?
looks to me a little small cooling for that kind of heat,,
correct me if i am wrong.
thank you for everything and for your great help .
I'm using a Laptop DC as my power supply, is rated 20v, I'm not using an LED driver, but with a voltage regulator LM350 I'm getting the voltage down, and I checked the amps wile doing so. It not consuming more than 1.7A.
The heat sink was only provisional, I used later a smaller one, but with a fan. It gets a bit hot, I wish I would of use a bigger one... so... you'r right!
Here is a preview of the projector.... It's bigger than this one, but the LCD is also bigger and it has a lot more quality.
The light is so nicely evenly distributed. Even looks like a projector you would buy out in the market. I see you got the corners of the projection without round edges. Not bad for a 3.5 inch at 640 by 480!
The Instructable is on line enjoy! LED Projector
just tell me.. how do you find in a street this great ZOOM LENS.. ha..? ..
i wish we have those left over parts in our streets too - LOL..
one more thing about the USB - i must say that's was the most interesting part!!
that's what make your project with digital signals (A\V in is only analog signals) wasn't realy clear how it made in pictures, and i wish you could add this part in video too -that will make it perfect -can you?
thank you newtonnand keep up your great work :))
about the dc supplier do you think this can do? -dc power
when it says ~4.5A but the led need only 1.6ma that's ok?
but what if i get a dc power with right voltage and can get up to 4.5A Max- will it light the 30w led?
i let have a link to this dc did you see it ? here the link again:
http://www.dealextreme.com/details.dx/sku.25143
once I'm done with my project you will be able to see how I've done it.
something els:
i have triple lens = (from a slide projector) 1:2,8 /90mm, i wonder if that would will be good for 5 or 7 inch lcd project ..i understand that it needs to have certain size to fit the lcd. isn't it?
You won't be able to use a slide projector lens, It will not focus the full screen. I tried 100 times LOL.
You can't use that type of lenses with LCD more than 2".
You really need to find a smaller transformer if you want to run the LED without driver. Id you use the 2A maybe the led will last less.
It will be ideal if you find something about 1- 1.2A
1) I dont really understand the wiring schematic, so maybe you could make me a different one that is colored. I dont think I am going to use a led driver because I dont know what that is. Here are the volts if you need them. The lcd is 12v, the fan is 12v, .08a and the light is the same as yours.
2) Is everything wired together in the box, and then there is a transformer outside the box, or are there seperate transformers in the box and a power chord extends everything to the wall??
3) Where can I find a fresnel lens and a slide projector lens??
4) how big is your project box, My lcd is bigger than yours and I dont know if it will fit in the project box. Here is a link to it http://cgi.ebay.com/new-2-5-TFT-Color-LCD-Car-Reverse-Monitor-DVD-VCR-VCD_W0QQitemZ350305407590QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518fd45266 maybe this will help.
5) where did you get your fan thermometer,??? the fan I have works very slow at 12v and I think it may need a thermometer.
Thanks in advance.
sincerely thanks for this project.
Please be sure to perfectly explain all the detail of construction (size, distances and also the LED ...).
Have a look here for your next box : http://www.oculon.com.tw/en/products/pro-detail.aspx?pid=15&tid=2
Have a nice day,
Miguipda ;-)
i am thinking doing this project,, but! i am too new with this :)
can you tell me the links on eBay were you bought the LED, the lens and so on ?
thank you!!!
The lens came from a slide projector.
And the LCD came from a mp4 player.
how hot that will be and with what kind of cooler i need to add to it..?
also i don't understand why i need a driver..can i just get dc power that fits and that will do ..?
The driver control de flow of electricity as well as the voltage which it will make the LED last longer. In my projector I did not use the driver, I just got a power supply with the right voltage and amps for the LED and so far so good.
take a look at this sketch i made - the tablet stands in A4 paper size (standard printing paper) - do you think the parts will stand , i mean the distance between the lens, the mirror, ext ...is it ok? do you think i should drop the mirror and just do it straight .
correct me if i am wrong - Thank you very much for your help!
About the mirror, if you can fit it it will allow you to get the lens closer to the enclosure. I thing you should be able to make it even in an smaller enclosure as an A4 seams a bit big for me. In any case once you have everything, give a try and you'll see how big or small the enclosure need to be.
but if you say no need than what do you think the distance should be between the led to the the fresnel lens ..?
BTW how hot do think your 20W led is about without the heat sink -?
something else about your project here.. i pay attention that the Projection screen corners are slightly rounded and not squared as your other project that you made using an OHP.. is it the projector lens or do i miss something ?
THANK YOU so much - you're great help !
If you have already the templated glass you can use it. The LED will get really hot without the heat sink, I would not use it without it. What I would do is try with a heat sink for the LED and with no templated glass (as the templated glass will affect the brightness of the projector), If there is not more than 30 C in the LED, I would not be worry about the temperature.
The round borders in my LED projectors are down to not have enough space to separate the LED from the LCD. I made everything b4 replacing the 80 small LED's for the 20w high power LED and I did wanted to keep it small.
what about the led , the lamp ext .. any links to eBay ?
another question if i may ask, is your mp4 support IN video composite..?
most of the simple mp4 goes only with flash memory and not with in video composite.
About the rest of your questions, everything is on my instructable.
The Mp4 player support video composite in. There are not many with that feature, it was build to be able to record to the internal memory from the composite. Sadly the mp4 I used is not longer available. But if you look in the comments I did find one, and it was from HK I think. See this one.
i think i would go for 3.5 inch lcd video monitor it has video in too hop that will work.
btw .. i just looked around for led and i found a led with - 50w white 4000 lumen. - for 25$.is it possible? and does it realy give this effect?
here the link :
http://cgi.ebay.com/High-Quality-50W-White-4000-Lumen-Save-Power-LED-F-S_W0QQitemZ270495360632QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3efac7a678
about the led..well the led itself as you see cost like 25$ but when you buy together with the LED driver -is another story..(130$) any idea how to get a dc power that fits that kind of led..don't tell me to build one - NO WAY ..lol
a led, a heat sink with fans, a broken lcd mp4,two unknown focal length lens( a convex lens & fresnel lens)
and im planning to buy another mp4 as follow,1.8" 160x128,
do u think its work?
please give me some comments and suggestions,
thanks a lot=]
so did you buy that LED from shen shui po?
i saw that too in one of the stores there.
but i found it really expensive. i guess it should be a 20W for that price. (another assumption is that it works between 12V to 14V with 1.X A. then that should add up with a rated power of at least 20W ) . you'd better ask for the maximum current allowed. that's crucial. it'll drive you crazy if your driver burns the expensive LED. though you'll be able to save part of those chips inside if you act quick enough.
i went to shenzhen with my friend an bought a 20W LED for just RMB$90 with the condenser lens. but if you go there make sure you got lots of stuffs in your shopping list to balance the transportation fee to shenzhen.
yet i bought a brighter 30W from ebay and it costs me around HK$280. i've finished the whole driver for my player, led and the fan and pack them in a PCB. and that works well too. and i'm waiting for the projection lens from the US. hope it arrives soon so i can start the installation. here's the picture of my driver set and the after-connection. and again thanks for newtonn2's instructable and his inspiration. cheers =]
i did really buy it from shen shui po,haha
it cost HKD$99 each, it has 9 chips inside, and they just told me work at 12v,
thanks for your advice,i will go ask them again.
besides, could you teach me how you make the circuit ?(it would be great if you also know how to make it work with rechargeable battery too)
on the other hand, what mp4 are you using?
infact, i want to make the projector size as small as it can, but its hard to find a mp4 lcd which is under 2" with not bad resolution.
thank you very very much for your reply and teaching,(specially with those photos).
also, thanks for newtonn2's instructable. =]
the mp4 i'm using was the 4.3" 'ainol'. it's expensive but it got whole lot more pixels then an ordinary 4.3". i don't know if the whole picture could pass through the projection lens but i'm just trying to make it happen. if that doens't work i'm gonna buy a 2.5" to 3" one. i guess 1.8" will not produce a satisfactory result. (unless u really enjoy the 'pixels' =p) i assure u that a 3 inch screen won't be too big. btw why do you wanna use rechargeable batteries?
just a suggestions, search for more on the net =p
I would like to ask about the light source.
Can the light source be a halogen lamp, or do I nead a led? what are the pros and cons of them?
And if I nead to buy the led, when can I buy it on the net?
Thank you for your replay
To find the led, go to ebay and search "high power led" somewhere in the comments there's a link to ebay.
how good is the picture
I've done another projector with a 7inch screen from a portable dvd player and using the lenses of an OHP, you can see it here.
I tend to do a larger projector based on the infos on this project (the other one you posted seem too hard for me to understand and if i get it right I'll need to get a projector light wich cost hundreds (I cant find an ohp)
What I currently have is an emerson LCD-0700E LCD extra screen.
(http://www.propertyroom.com/itemdetails.aspx?l=5973700)
I was wondering if i could use parts of an old PJ768 Projecta scope I got when i was was 15 years old.(http://www.amazon.com/Project-A-Scope%C2%AE-Image-Projector/dp/B000RSKZ8C)
There is a small mirror inside About 2 inche by 2 inches inside
and a small lense.
Honestly I think my screen will be too large to use theses as parts.
Id like to have an expert opinion :P
Thanks
Hi there!
For the size of you LCD, I really would go for the OHP project.
I used the OHP because it's really easy to find them here and really cheap.
You don't need to buy a projector light, you could use metal halide, they works very good, they last 100 times more than a conventional ohp light and they are a lot whiter.
I'm not sure about the mirror and lens, maybe once you have you LCD ready and the light source, you could try them to see if they work with your setting.
I see on this site that they sell a ballast to power the light.
Do you know if it's required?
As far as I know ballast are used to reduce intensity and thats bad in a projector ain't it?
Thanks again
But in the link you send me there is a Electronic Ballast, they are really expensive, you could use a normal ballast, there are more heavy and get hotter, but they are a lot cheaper.
I want do one,thank you.
Thanks! and keep going like this!
Cheers!
How is yours? were you able to see the movie OK the other day?
Yea, I did watch the movie but after playing around with the lenses and the light I got a better picture, I now watch t.v shows on it almost everyday. Your PSU stopped working that to bad. I know those PSUs are tricky sometimes because I got mine working after I hooked up the gray wire to some other wire not sure which one, and then I heard a loud shock. I hooked up the red and black wires to the light after and it worked as before it didn't I am not sure why. :/
But I am still glad it is working.
The one I'm using is not too good. It's really difficult to find a LCD that small with a lot of resolution. so... go ahead and use that TV you could always update later if you find something better.
http://cgi.ebay.co.uk/1-x-MR16-10w-Halogen-Light-Bulbs-12v-1-99-delivered_W0QQitemZ290297480869QQcmdZViewItemQQptZUK_Light_Bulbs?hash=item43971406a5&_trksid=p3286.c0.m14
thankx
olly
http://cgi.ebay.co.uk/2-x-MR16-100W-12V-GZ6-35-High-Quality-Projector-Lamp_W0QQitemZ310170904897QQcmdZViewItemQQptZUK_ConElec_LightingLEDsStrobes_RL?hash=item4837a06941&_trksid=p3286.c0.m14
also how hot do you think it will get???
I just realized that the one you link to is no good because it only has a 50 hour lamp life. If you do end up getting a halogen I would go for this one it has a 3000 hour lamp life much longer life span.
Sorry I misread the specs on the one you linked...http://cgi.ebay.com/MR16-12V-100W-100-watt-Halogen-Light-Bulb-60-Deg-JCDR_W0QQitemZ270201097665QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ee93d8dc1&_trksid=p3286.m20.l1116
the links is:
http://cgi.ebay.com.au/2-5-In-Car-LCD-TFT-Color-Monitor-Camera-Video-12V-DC_W0QQitemZ250498455362QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3a52df1742&_trksid=p3286.m63.l1177
Nick
I guess you have this one http://cgi.ebay.co.uk/1x-High-Quality-20W-Warm-White-1000LM-Save-Power-LED-F_W0QQitemZ400071854179QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d26240863&_trksid=p3911.c0.m14#ht_2129wt_958
Which is rated:Color Temperature: 3000K
This one is better, is is rated:Color Temperature: 5500K
http://cgi.ebay.co.uk/1x-High-Quality-20W-White-1000-Lumen-Save-Power-LED-F_W0QQitemZ400072201600QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d26295580&_trksid=p3911.c0.m14#ht_2107wt_958
ok, the LED you have is rated 13.5 ~ 15.0 Vdc, why don't you try at 14.5 or even 15v, and see what happen.
Do you have a bench power supply?
If not, why don't you make one? i have and instructable that explains how to make it.
That's really cool. I have trouble finding all the lenses. Are all the lenses necessary? If all of them are necessary where did you get them from.
Will it do for fresnel lens
http://cgi.ebay.com/12x6%22-Recessed-Light-Fresnel-Shower-Baffle-6%22-Can.IN6F_W0QQitemZ260474375512QQcmdZViewItemQQimsxZ20090909?IMSfp=TL090909176001r5248
How about slide projector lense? Where did you get it from?
I was also wondering about mp4 player video input. Can you connect your laptop to it or can you only play videos stored on the memory of mp4 player?
I did need all the lenses, but you could try without the condenser and see how it looks.
The condenser lens came from a headlamp of an old BMW.
The fresnel lens you show in the link I don't think will works.
The one i'm using is just a magnified fresnel lens like this one http://cgi.ebay.co.uk/XL-Magnifier-Fresnel-Lens-Full-Page-Magnifying-Sheet_W0QQitemZ160360480021QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item25563abd15&_trksid=p3286.c0.m14#ht_2006wt_1000
but i mine is hard, i don't know about that one.
The slide projector lens it's ok if you're using a LCD not bigger than 2.5"
I got it from a boot sale.
My mp4 has a AV in connector, so i can connect it to anything, but the pixels are not enuf to use it with a computer.
newtownn2 i finish today my test projector....lcd monitor don't arrive... for this i don't start to write my instructales.
but i publish frist projector photo.
http://picasaweb.google.it/exilaus/Projector#
im wait my 1.8" lcd for finish all
thanks for your sharing too much!!!
my case are now 20cmx4,6cm(external 45cm internal)x4,6(same)
http://cgi.ebay.ca/KODAK-SLIDE-PROJECTION-FF-100MM-LENS_W0QQitemZ290318817011QQcmdZViewItemQQptZLH_DefaultDomain_2?hash=item43985996f3&_trksid=p3286.c0.m14
http://cgi.ebay.ca/3-5-TFT-LCD-Color-Monitor-Screen-ZM-3501_W0QQitemZ280376100789QQcmdZViewItemQQptZCar_Audio_Video?hash=item4147b7c7b5&_trksid=p3286.c0.m14
This is what I did:
http://www.instructables.com/files/deriv/F3V/D4UF/FYTCPGNF/F3VD4UFFYTCPGNF.MEDIUM.jpg
100W LED is a bit pricey for me though. and i saw some 1W to 3W LEDs on ebay. I would like to know if i could put them together to make a nice and neat light source? (Shapes of those LEDs are so awkward..)
I also notice that you have a few meters of throw distance. But for me there's only less than two meters space in my room. Would a 10W be enough? Or is it better to have a brighter led whatever distance I have?
Thanks for your patience. =]
http://cgi.ebay.com.sg/ws/eBayISAPI.dll?ViewItem&item=200359133842#ebayphotohosting
but I disassemble it and take only first 2 part ,it inside a tube and invert sense of use, for create my projector and reduce dimension and for have in 1.5/2 meter distance for have 60/70cm screen (length).
with all tube you able to project fine up 5" lcd with only 2 part only max 2" lcd better 1.5" and have circle angle you don't have good rear illumination.
I'm wait pled and final lcd for assemble prototype. for testing I using mobile phone pda digital camera display whit original backlight .
was wondering what you thought of using this bulb?
http://cgi.ebay.co.uk/HIGH-POWER-50W-LED-BOARD-LIGHT-4000-4500LM-24-26V-DIY_W0QQitemZ390079085542QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5ad2867be6&_trksid=p3286.c0.m14
thanks!
http://cgi.ebay.co.uk/20W-White-Bright-1000LM-Power-LED-Prolight-Light-Lamp_W0QQitemZ350219658628QQcmdZViewItemQQptZUK_BOI_Electrical_Components_Supplies_ET?hash=item518ab7e584&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1683%7C293%3A1%7C294%3A50
If you are watching from 4meter or so, it's ok.
I'm working in other better, with a screen a bit bigger. I'll make an instructables as soon as is finish, but i'm afraid it will take a bit of time cause i'm really busy at the moment.
http://cgi.ebay.co.uk/1X-Mini-3-5-TFT-Color-LCD-Car-Monitor-VCD-DVD-VCR_W0QQitemZ260453214924QQcmdZViewItemQQptZUK_Audio_TV_Electronics_In_Car_Entertainment_GPS_In_Car_Audio_Players_PP?hash=item3ca438aacc&_trksid=p3286.c0.m14&_trkparms=65%3A15|66%3A2|39%3A1|293%3A1|294%3A50
i believe its a 640 by 480 but is only made in 3.5"
they dont make 2.5" screens of that resolution. sorry
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=330342586722
Don't get that one, it says its warm white, that means the light will be more orange than white, so the colours of the projections will be affected. The colour temperature of that one is around 3500k very orangeish, you need something like this one
http://cgi.ebay.co.uk/20W-White-Bright-1000LM-Power-LED-Prolight-Light-Lamp_W0QQitemZ350219658628QQcmdZViewItemQQptZUK_BOI_Electrical_Components_Supplies_ET?hash=item518ab7e584&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1683%7C293%3A1%7C294%3A50
This last one is rated 5500k , that's more like it.
http://cgi.ebay.co.uk/EFP-12v-100w-Lamp-Bulb-Disco-DJ-Light-Projector-Reflect_W0QQitemZ390060032434QQcmdZViewItemQQptZUK_ConElec_LightingLEDsStrobes_RL?hash=item5ad163c1b2&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1690%7C293%3A1%7C294%3A50
that'll add a 50% more power.
If I used your 100 watt idea I may not need to replace the condenser lens that 100 watts is double of what I already have. But the one of the link I show you are 18 dollars a piece. still cheap but a little more expensive..
I will leave you a note and show you the result after I buy it next month! : )]
The 100w lamp should works fine with anything around 8A on 12V or more, mine is rated 15A at 12v, Technically that should be enuf to run the 100w lamp.
Some people use a high power resistor, but I don't really know why.
have a look at this... http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply
http://cgi.ebay.co.uk/30W-White-Hihg-brightness-1800LM-Energy-Saving-Led-F_W0QQitemZ160344562352QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item255547dab0&_trksid=p3286.m63.l1177&_trkparms=240%3A1318|301%3A1|293%3A1|294%3A50
There is a few MP4 players on the market with AV in (composite) here is one cheap http://www.lightinthebox.com/1GB-2-8-inch-MP3---MP4-Player-with-with-Digital-Camera-M4092_p21503.html
But it will be a lot better if you could use something like this http://www.lightinthebox.com/1GB-MP4---MP3-Game---Player---2-8-LCD---3M-Pixel---SD-MMC-Card--CAVS012-_p10420.html
The quality of the screen is a lot better.
Sorry I couldn't answer your question.
http://www.instructables.com/id/100-watt-house-light-bulb-25-inch-Lcd-video-pro/
http://www.instructables.com/id/100-watt-house-light-bulb-25-inch-Lcd-video-pro/
Thanks! Cheers!
I may go ahead and buy the same high power LED as you next month, ya it would make the box smaller it would be better, me too I look for ways to improve things too.
Ya, it was fun.
Thanks, If I do end up getting the high powered LED I will leave you
a comment about it so you can see it.
Thanks,
I think I just need to look around for a better condenser lens. At the moment I am using a magnifying glass, it works O.k, I am sort of figuring it out, If I put the magnifying glass lens closer to the LCD I get a very bright image but I get black shadow not covering the projected image/video, the screen image is getting better though. I did some research and found that the condenser lens should be aspherical with round size inside, I have a small aspherical lens from the slide projector lens I took apart but it is too small, but when I use it on the projector then I have black shadow problems also.
I think I just need to look for a better condenser lens, maybe if I am lucky I can get it to work with the magnifying glass, I just need to play around with it more.
I just wanted to say I got the Fresnel lens in the mail about a week ago. I tried many different adjustments using my small condenser lens and magnifying glass lenses and such, but no matter what I did using those things I had, I could not get the best output. The frensel Iens I bought cost 25 dollars it was a really good one
So.. Now I am just back to the regular magnifying glass lenses only one on eather sides of the LCD. I got a good picture shot of the output I also now use a smaller box and cut the LCD chamber down a couple inches which resulted in really good output.
http://www.instructables.com/id/SUXVZBFFU6LZRA3/
I bet if I had a condenser lens like yours it would be better, then I might be able to use a high powered led that would make it work as good as yours, if you know where I can get a good inexpensive condenser lens could you drop me a line in my mail?
Thanks for your help, Great Instructable!
http://www.instructables.com/files/deriv/FJ4/AAXT/FUPUPIJ4/FJ4AAXTFUPUPIJ4.MEDIUM.jpg
But i have seen some laptop charger's on dealextreme that may have the right voltage and amps too, like this one
http://www.dealextreme.com/details.dx/sku.10732
But i think i'm going to order the led and when i have it and try with the chargers i already have, then i will see if i need a better charger.
Cumps
http://cgi.ebay.co.uk/1x-High-Quality-30W-White-1800-Lumen-Save-Power-LED-F_W0QQitemZ280334397504QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item280334397504&_trksid=p3286.m63.l1177
Because it is not round like your's i'm not sure if this will give a uniform light on all the screen.
I'm using a 3.5" lcd for my projector and i would also like to know if this lens is big enough for the condensor lens
http://www.dealextreme.com/details.dx/sku.13618
Cumps
Si tienes cualquier pregunta, dime, estaria encantado de ayudarte a hacer tu propio projector.
un saludo.
http://cgi.ebay.co.uk/3-5-TFT-LCD-In-Car-Colour-Monitor_W0QQitemZ360143393679QQcmdZViewItemQQptZU
http://www.dealextreme.com/details.dx/sku.15001
but i don't if the resolution is enough for this project.
http://cgi.ebay.co.uk/3-5-Swivel-TFT-LCD-Car-Rear-View-AV-Monitor-w-Remote_W0QQitemZ370174618155QQcmdZViewItemQQptZUK_Audio_TV_Electronics_In_Car_Entertainment_GPS_In_Car_Audio_Players_PP?hash=item370174618155&_trksid=p3286.c0.m14&_trkparms=72%3A1683%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
or even better this one 640x480
http://cgi.ebay.co.uk/3-5-TFT-LCD-In-Car-Colour-Monitor_W0QQitemZ360143393679QQcmdZViewItemQQptZUK_Audio_TV_Electronics_In_Car_Entertainment_GPS_In_Car_Audio_Players_PP?hash=item360143393679&_trksid=p3286.c0.m14&_trkparms=72%3A1683%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
I don't really know if the LED can be affected at 12V, but I don't really think it will. To my knowledge LEDs are affected if u supply more voltage, or more current, but not if u supply less voltage or current.
if your power supply is 15V and you use the LM350 as a current regulator, the output will be already around 3V less than the input, so u don't need anything to step down the voltage.
If you're using the LM350 as a voltage regulator you'll need follow this intructable, and instead of using a 5k potentiometer, use the right resistor to get the voltage u require.
Any other question, just ask.
ps. I'm sure u're projector will turn even better than mine.
keep up the great work and i understand that your busy, i'm a working man as well =]
U ROCK!
p.s. is this all the steps or is their more
THANKS