i bought all my things here http://www.gadaffy.ch.vu They have lamps, lenses, TFTs, reflectors, objectives, protection glasses... and the prices are fair. by the way.. www.diy-community.de is much better than www.allinbox.com ciao Basti
Now hook up your gaming rig (if you don't have one, get one) and play doom3 on ye hardest difficulty, in the dark with nothing in your peripheral vision. Now don't go telling me you ain't scared!
umm did you use any uv filter film on the lcd? if i'm correct uv light doesn't do much good to them so usually they use a transparent uv filter film. really nice work otherwise are you gonna paint it ? looks kinda ugly like that
I read about the possibility of "homemade projectors" a long time ago, but I never belive to good results of it... So I am absolutly amazed
I want one of those, now will it be cheaper to buy a tft and strip it or use one of the laptop tft's i have if i can find the card to run it, ?????. And about size maybe you could mount it in side a coffe table, so anybody would just think O there's a table. If you see what i mean. Now where is that tft screeen.
french people can go here : www.izzotek.com I have also a VP DIY with a 15" tft Huyndai L50S ! HQI 250w that is really good !! have fun
If you can find a controller for that laptop lcd that is cheaper than a new lcd then go for it . If you are worried about size you can buy smaller 7 inch lcds that are 1024x720 (for 720p video) that will make a really compact projector. For good advice try www.diyaudio.com under the moving image section. I'm still waiting on my shipment and hope to get my projector underway soon! Edit: also if you want more light go for a 400w HQI bulb, which I am getting. ballasts from 1000bulbs.com are very cheap and shipped quickly, and I bought my bulb from diyprojectorcompany for only 50 dollars!
Stripped my compaq armada m300 screen out it has a Toshiba panel LTM11C307S anyone know where i could get a contro;;er for this.
iirc Earthlcd.com should have some controller boards, though they seem to run on the expensive side of things.
WOW! Surprised no one has asked, "I have this panel. Can I wire it up?". Awesome job although the whites look washed (typical for projectors though). Nice and clear. However, are those plastic fresnels I see? I actually have a 10" one, but its covered with bug juice cause its too fun to fry them when the suns out. Instant flame!
$249 for controller plus shipping and import tax, may just buy a lilliput or butcher my rkm 5600 although i had plans for that. But i think i would rather build a small compact unit using a 7" lilliput, whats best 15" 1024x768 0r 7" 1024x768. I assume the bigger the screen the bigger you can have the projected screen, but what or how do you work out what size of screen you would get from each at the best quality of picture.
could a PSOne screen be used for projection? i cant find a picture of one without the internals, so i cant tell myself. seems liek an ultra compact version could be made with a 5".
U U U Usually the size of the screen will not matter, it is the resolution that matters the most. Most commercial projectors use very small screens, but with high resolutions (usually 1024 x 720). The reason commercial projectors use small screens is for size of the projector, and the smaller screen is easier to have completely in focus (the larger the screen, the more out of focus the edges will be unless using a special lens.) The main reason I see for going large is to get a 17 inch screen for 1280x1024, but the difference between a 7" lilliput and a 15" with the same resolution will only be price and ease of use. Keep in mind that for the 7" screen, the optics will ususally be cheaper (smaller fresnels) and easier to focus, but it will be hard to direct as much light at the LCD. For your case I would reccoment the lilliput, which will provide you with a nice compact projector instead of a big honker like I'm making. Edit: You can work out the size of the projected screen using simple math (proportions) because there are two triangles there. It's very easy, If you don't get it I can draw up a pic later. If you feel that the projected image will be too small I think you can just add a negative (convex) lens to spread the light more after it has been focused by the projection lens (usually a triplet). Opus Yes a mini playstation screen can be used, but I am not sure as to how easy they are to strip (remove the backlight) try checking www.diyaudio.com in the moving image section to find more information on that screen.
the crownless thanks for info when you are setting up the projector lengths ie lcd > lens do you have to know the distance between the lens and the projection surface and once you set that it's fixed unless you buy a lens you can focus. What i mean is if you set it up so your projector is x feet from screen i take it it always has to be the x lenght from what ever you are projecting onto.
U U U From what I have seen, the most useful way of preventing the problem of the projector being out of focus when you build it using fixed lengths is to mount the main (triplet) lens on threaded rods, so that you can adjust the lens length from the lcd once it is mounted in place. You should not need alot of adjustment, but the threaded rods are for fine-tuning your focus once you have the projector wherever you are using it. The setup would have the lens mounted to something like a thin piece of wood and the rods would go through holes in the wooden lens mount. Bolts on the rods would be used to hold the lens in place, but could be turned to adjust the distance of the lens from the LCD. I believe that you can use a fixed lens distance if you are sure of the exact focal length of your projection lens (triplet), but this will focus the diverging light from your LCD into parallel rays, which would create less sharpness than if you were to adjust the lens distance exactly so that the diverging light from your LCD is focused to converge back exactly at the canvas or projection screen, creating a sharper image of the LCD. I am not sure if havind a fixed distance between the LCD and projection lens will actually have a great effect on image quality, I will have to experiment when I get my projector built. Also, having a very slightly blurred picture may reduce the "screen door effect" in which you can see the black space between pixels of the LCD. Blurring the projection could blend the pixels slightly to create a more "smooth" picture. This is what happens in some televisions, and is why they are terrible for showing computer-resolution text (if you have a graphics card that has S-video or composite out you can try using a normal TV and see what I mean.) I will check back here on the 21st then I am going to Switzerland for winter break, I don't know whether I will be able to get online during that time, but I will see.
For all who think about using a psone LCD... it works fine, but the quality is much lower than e.g. 7" or 13" TFTs... here is a link with all necessary information... http://www.heuwinkel.net/psone.htm cu basti
Thanks for the links for the optics etc, most useful. Much cheaper than anywhere else i've seen, despite the postage costs from Germany. For those of you who can read german I found what looks like a good site for the technical details, although many have been mentioned in this thread. Google translator works too though 'Brennweite' is 'focal length' not 'Anna-honouring' as it translated for me. Use dict.leo.org for any odd german words that google translator stumbles over (why are DIY projectors so much more popular in Germany?).
I've been working on my DIY projector for a while now... it's looking good so far. One of the best sites for diy projectors is lumenlab. There are public forums, but to gain access to the protected forums you have to buy the guide for $20. I did and it was the best $20 I've spent. The guide is good, but the help in the forums is excellent. The staff and moderators are eager to help as well. PS I am not affiliated wit hthe site in any way shape or form.
