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
Step 1: All that you need.
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:
-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