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.