Alright!
It's good to see some active discussion here! A few things:
Myren,
The Eiki projector I spoke of produced a 3500 ANSI lumens, 800:1 contrast ratio, and a 200 watt UHP bulb. Efficiency is nice 😎 . Too bad that bulb costs ~$600 (not to mention the ballast).
Gunawan,
I believe that achromat lenses are designed to correct for the distortions that you mention. I'm not sure if OHP's have this type of lens, but my guess would be yes. I never achieved an image of satisfactory quality to assess distortions caused by the lens. Sorry that doesn't help much, but I don't have much to go on. My OHP should be here any day, so maybe then I can offer more.
Marklar,
The first reflector on ebay you mentioned looks nice, but maybe too small. Also, there is no way to know if it is parabolic/elliptical, but I'm sure it is better than nothing! The hydroponic reflector wouldn't produce uniform light intensity because of its "square" shape.
SuperDave,
Although I used to think that we needed something around 6000K color temp, I now think that 4300K would be fine, especially since the OHP LCD panels that most of us are using were designed with that same color temp in mind (most OHP's seem to be around the 4000-4500K range).
For anyone interested, the cheapest MH setup I have located is a 400 watt MH bulb from Home Depot ($20) + the $45 MH ballast here. (click on the "MH400 ballast" link).
Zeco,
The "Good panel/bad panel" thread might help give you some info on response times.
Tom1536,
Be sure to check this forum: HTPC at [url]www.avsforum.com[/URL] . It has some good info on PC's for home theatre use. Cool stuff.
-f4
It's good to see some active discussion here! A few things:
Myren,
The Eiki projector I spoke of produced a 3500 ANSI lumens, 800:1 contrast ratio, and a 200 watt UHP bulb. Efficiency is nice 😎 . Too bad that bulb costs ~$600 (not to mention the ballast).
Gunawan,
I believe that achromat lenses are designed to correct for the distortions that you mention. I'm not sure if OHP's have this type of lens, but my guess would be yes. I never achieved an image of satisfactory quality to assess distortions caused by the lens. Sorry that doesn't help much, but I don't have much to go on. My OHP should be here any day, so maybe then I can offer more.
Marklar,
The first reflector on ebay you mentioned looks nice, but maybe too small. Also, there is no way to know if it is parabolic/elliptical, but I'm sure it is better than nothing! The hydroponic reflector wouldn't produce uniform light intensity because of its "square" shape.
SuperDave,
Although I used to think that we needed something around 6000K color temp, I now think that 4300K would be fine, especially since the OHP LCD panels that most of us are using were designed with that same color temp in mind (most OHP's seem to be around the 4000-4500K range).
For anyone interested, the cheapest MH setup I have located is a 400 watt MH bulb from Home Depot ($20) + the $45 MH ballast here. (click on the "MH400 ballast" link).
Zeco,
The "Good panel/bad panel" thread might help give you some info on response times.
Tom1536,
Be sure to check this forum: HTPC at [url]www.avsforum.com[/URL] . It has some good info on PC's for home theatre use. Cool stuff.
-f4
why would you even ask for cost of reproducing it, repair, and balh blah blah?
A comercial LCD projector cost a lot to maintain. Or you forgot how much their bulbs replacement cost?
Cost to reproduce? This isnt a mass production dude. Cost is zero.
Cost to assembly? It just cost our time. That means: zero. And that time is zero cause for many, this is a hobby time. While many are spending this spare time watching TV, going to park or whatever, we are spending on something we enjoy.
Cost to replace? With so few parts on this DIY project, cost to replace can be 10,000 less than a commercial projector. Plus, if something goes wrong on a comercial projector, where will you get parts from or where to find someone to fix/replace it? It will could cost several hundreds to replace/repair.
Plus, he may have a 15ft+ screen but many (most Id say) are looking for 6ft or so as our rooms arent even bigger than that anyway.
Gotta tell you. laptops with detachable panels for OVH came out more than 10 years ago. I bought one for the company I used to work and that thing was pretty (at that time) compared to costy and heavy and not portable CRT projectors.
Not only technology has changed, but today we can buy used LCD panels very cheap. I got mine for $25.
A comercial LCD projector cost a lot to maintain. Or you forgot how much their bulbs replacement cost?
Cost to reproduce? This isnt a mass production dude. Cost is zero.
Cost to assembly? It just cost our time. That means: zero. And that time is zero cause for many, this is a hobby time. While many are spending this spare time watching TV, going to park or whatever, we are spending on something we enjoy.
Cost to replace? With so few parts on this DIY project, cost to replace can be 10,000 less than a commercial projector. Plus, if something goes wrong on a comercial projector, where will you get parts from or where to find someone to fix/replace it? It will could cost several hundreds to replace/repair.
Plus, he may have a 15ft+ screen but many (most Id say) are looking for 6ft or so as our rooms arent even bigger than that anyway.
Gotta tell you. laptops with detachable panels for OVH came out more than 10 years ago. I bought one for the company I used to work and that thing was pretty (at that time) compared to costy and heavy and not portable CRT projectors.
Not only technology has changed, but today we can buy used LCD panels very cheap. I got mine for $25.
Re: Alright!
Fender, I know about that thread, but not everybody has posted in there already. I, inviting you all to do so.
fender4 said:
Fender, I know about that thread, but not everybody has posted in there already. I, inviting you all to do so.
glass beads
Darth Willis All those points are true and valid. However NOTHING beats the thrill when you get something going. My own setup has not cost me much (maybe approx US$150) so far, and I have got a lot of enjoyment and edumacation out of experimenting with it.
For people interested in glass beads
I thought I should pass on the experiences I have with glass beads. Before I changed my setup to rear projection, I originally used front projection with a large sheet of 3mm white melamine as a screen. To try to increase the gain, I made a small panel of the same stuff covered with tiny (maybe 0.5mm or smaller grain) glass beads. These beads are apparently used in road marking or something. I sprayed the melamine with contact adhesive and tipped the beads on, tipping of the excess. I then attached this smaller panel to the bigger unbeaded panel so I could compare the two side by side. I found the gain and contrast were indeed improved fairly dramatically at the expense of the viewing angle. However I thought the image had a 'sparkly' quality, kind of shimmering. I decided I actually preferred the flat white melamine screen over the high gain section because the image was far more even and smooth.
A couple of months ago I got given a 50" slide projector screen to muck about with. I was pretty happy when I found it too was a professional hi gain glass beaded screen. When I tried this screen, again contrast and brightness were improved, but the sparkling effect was better but still there. The beads on the pro screen were a lot finer than the ones I used on the home made screen, but it really turned me off wanting to use beaded screens at all. The slide projector screen was quite an old one, maybe they have improved the technology a bit since then....
Darth Willis All those points are true and valid. However NOTHING beats the thrill when you get something going. My own setup has not cost me much (maybe approx US$150) so far, and I have got a lot of enjoyment and edumacation out of experimenting with it.
For people interested in glass beads
I thought I should pass on the experiences I have with glass beads. Before I changed my setup to rear projection, I originally used front projection with a large sheet of 3mm white melamine as a screen. To try to increase the gain, I made a small panel of the same stuff covered with tiny (maybe 0.5mm or smaller grain) glass beads. These beads are apparently used in road marking or something. I sprayed the melamine with contact adhesive and tipped the beads on, tipping of the excess. I then attached this smaller panel to the bigger unbeaded panel so I could compare the two side by side. I found the gain and contrast were indeed improved fairly dramatically at the expense of the viewing angle. However I thought the image had a 'sparkly' quality, kind of shimmering. I decided I actually preferred the flat white melamine screen over the high gain section because the image was far more even and smooth.
A couple of months ago I got given a 50" slide projector screen to muck about with. I was pretty happy when I found it too was a professional hi gain glass beaded screen. When I tried this screen, again contrast and brightness were improved, but the sparkling effect was better but still there. The beads on the pro screen were a lot finer than the ones I used on the home made screen, but it really turned me off wanting to use beaded screens at all. The slide projector screen was quite an old one, maybe they have improved the technology a bit since then....
1.8" LCD's (hacker story)
Veteran projector hack and newborn at DIY:
My lcd projector story....(beware! many paragraph's forseen)
First, glad to have found a forum that deals with the subject.
Noticed some threads on EIO last year, but not much to whet my appetite.
I've made my own projector's since 1993 using the active matrix 1.8" tv's from Radio Shack (pull em out, strip the backlight, plop it in my slide projector) and some other manufacturers.
In 91-92 I saw a Sharp projector for $3000. I gloated alot back then as I built my first one for $50 (I already had the slide projector). Not much difference except they had some de-pixillizer lens that amounted to a slight defocus on mine.
They start burning a pixel or two after 100 hours (longer if I didn't run the projector at the higher wattage setting). Then, go to the pawn shop and get another for ~$50 and another...
They were okay and gee-whiz, I did that-ish. I like tinkering.
I then picked up some higher res' 1.8" from Primeview and Unipac (~540x240). Not as pixellated and better contrast and brightness. Very easy to enjoy the picture and get soaked up in the movie and they lasted a little longer. When I burned that panel out, I would pick up another for ~$50-150 and another...
I had to keep replacing the bulbs (ELH) of course after ~30 hours.
~$15-20 a pop.
Anyhow, it sure was fun doing that and thinking of it before my peers did. Sharing it too, and watching APOCALYPSE NOW, as I thought Hugh Hefner might be doing-ha.
I'm reflecting on that experience and wished I had pursevered making my own company (although another already patented MY idea in '88, making one within the carousel). I made a few for friends with used projectors from the pawn shop.
I can say I enjoyed the thrill of building and watching these on the wall (or side of my house). And for a very low cost (I can make for about $150, with readily available parts, now) that is very accessible and fun. Wow! A giant picture near DVD resolution and I put it together.
Of course, I'm on the lookout for some xga's (I think they're hiding them somewhere) and can't wait to plop them in there too. But, these are still very enjoyable for movies, just not HDtv.
I'm not Lucas Films and 'don't got no' DLP. This is quite alright! I have this one, it cost $90 and I can put my name on it.
....look forward to reading all the info/comments put together so far and in the future.
Got Sushi?
Veteran projector hack and newborn at DIY:
My lcd projector story....(beware! many paragraph's forseen)
First, glad to have found a forum that deals with the subject.
Noticed some threads on EIO last year, but not much to whet my appetite.
I've made my own projector's since 1993 using the active matrix 1.8" tv's from Radio Shack (pull em out, strip the backlight, plop it in my slide projector) and some other manufacturers.
In 91-92 I saw a Sharp projector for $3000. I gloated alot back then as I built my first one for $50 (I already had the slide projector). Not much difference except they had some de-pixillizer lens that amounted to a slight defocus on mine.
They start burning a pixel or two after 100 hours (longer if I didn't run the projector at the higher wattage setting). Then, go to the pawn shop and get another for ~$50 and another...
They were okay and gee-whiz, I did that-ish. I like tinkering.
I then picked up some higher res' 1.8" from Primeview and Unipac (~540x240). Not as pixellated and better contrast and brightness. Very easy to enjoy the picture and get soaked up in the movie and they lasted a little longer. When I burned that panel out, I would pick up another for ~$50-150 and another...
I had to keep replacing the bulbs (ELH) of course after ~30 hours.
~$15-20 a pop.
Anyhow, it sure was fun doing that and thinking of it before my peers did. Sharing it too, and watching APOCALYPSE NOW, as I thought Hugh Hefner might be doing-ha.
I'm reflecting on that experience and wished I had pursevered making my own company (although another already patented MY idea in '88, making one within the carousel). I made a few for friends with used projectors from the pawn shop.
I can say I enjoyed the thrill of building and watching these on the wall (or side of my house). And for a very low cost (I can make for about $150, with readily available parts, now) that is very accessible and fun. Wow! A giant picture near DVD resolution and I put it together.
Of course, I'm on the lookout for some xga's (I think they're hiding them somewhere) and can't wait to plop them in there too. But, these are still very enjoyable for movies, just not HDtv.
I'm not Lucas Films and 'don't got no' DLP. This is quite alright! I have this one, it cost $90 and I can put my name on it.
....look forward to reading all the info/comments put together so far and in the future.
Got Sushi?
Input?
OK...so let me understand this....you mean I can take the useless Radio Shack TV I have in the closet, take it apart and put the screen in a slide projector and done?
Very cool...
How's about the input? How do I get the picture from the DVD player to the little tiny screen?
Help me out here...got a pic of the contraption?
OK...so let me understand this....you mean I can take the useless Radio Shack TV I have in the closet, take it apart and put the screen in a slide projector and done?
Very cool...
How's about the input? How do I get the picture from the DVD player to the little tiny screen?
Help me out here...got a pic of the contraption?
Which 'Shack model do you have?
Which model do you have? (Mine is PocketVision 32 or #16-169)
Or what size is the screen?
There was an RCA to 1/8 inch mini-plug that I could hook up on mine.
The one I have is active matrix and something like 320x240 res.
Which model do you have? (Mine is PocketVision 32 or #16-169)
Or what size is the screen?
There was an RCA to 1/8 inch mini-plug that I could hook up on mine.
The one I have is active matrix and something like 320x240 res.
Pictures are the only proof of concept...
Before people start saying how it cant be done and how I get a 15' image and how a 320X240 is OK blown up wall-size, well, I say show me how it looks, then talk about how big it is, what it's made of, how none of the light will show through...
Example; Here's my results using a 7k lumen MH OHP with a 640X480 1.4M color panel viewing a NTSC broadcast image: (Note; the camera @1024X768 possibly makes it look better than it is)
Before people start saying how it cant be done and how I get a 15' image and how a 320X240 is OK blown up wall-size, well, I say show me how it looks, then talk about how big it is, what it's made of, how none of the light will show through...
Example; Here's my results using a 7k lumen MH OHP with a 640X480 1.4M color panel viewing a NTSC broadcast image: (Note; the camera @1024X768 possibly makes it look better than it is)
Attachments
LCD Projector Diagrams and parts lists
LCD Projectors and actual scematics
Hello everyone,
I am currently enlisted in the marine corps. Point being a) I dont make dik for money and b) I have to share a room with two other marines. So my money and space are both very valuble.
Anyway, I just recently have run accross this do it yourself LCD Projector sight and well, it cought my eye. I love working on electronics. However, after sifting through this forum and many websites Im still not quite sure where to start to build this thing. I want to build a decent semi-professional projector that has as many as possible video inputs and a decent interface. What is the best LCD on the market? What are the limits on size of the LCD. my price range is about $500. I have already looked through many sites and read many postings here. I get the basic jist of how it works like an over head for the most part. what I would like to know is what is SO different from the DIY and the major brands. What type of electronics could be emplimented into these projectors. If any of you could help me I would greatly appreciate it. thank you.
😕
LCD Projectors and actual scematics
Hello everyone,
I am currently enlisted in the marine corps. Point being a) I dont make dik for money and b) I have to share a room with two other marines. So my money and space are both very valuble.
Anyway, I just recently have run accross this do it yourself LCD Projector sight and well, it cought my eye. I love working on electronics. However, after sifting through this forum and many websites Im still not quite sure where to start to build this thing. I want to build a decent semi-professional projector that has as many as possible video inputs and a decent interface. What is the best LCD on the market? What are the limits on size of the LCD. my price range is about $500. I have already looked through many sites and read many postings here. I get the basic jist of how it works like an over head for the most part. what I would like to know is what is SO different from the DIY and the major brands. What type of electronics could be emplimented into these projectors. If any of you could help me I would greatly appreciate it. thank you.
😕
Impressive display Jjasniew.
Would you have tried your panel on a few not so powerful overhead projectors before using the 7k model.
Would you have tried your panel on a few not so powerful overhead projectors before using the 7k model.
color temp
tomithy83
to rehash.
color temp is equal to the temprature of light being produced by a star in degrees kelvin. the lower the # the redder the light. Normal light from our sun is between 4000k and 6000k. any hotter and the light takes on a blue color.
hope that clears it up.
tomithy83
to rehash.
color temp is equal to the temprature of light being produced by a star in degrees kelvin. the lower the # the redder the light. Normal light from our sun is between 4000k and 6000k. any hotter and the light takes on a blue color.
hope that clears it up.
Darth Willis:
So your point is that you want someone to give you measured drawings and part lists (like PBS DIY woodshop shows) and proof of the output before you will even try. I am not trying to equal or surpass a 2000+ Xga lcd projector, or a CRT projector. I just want something to watch a movie on, and enjoy it. Who knows, maybe when I have more money I'll trow it out and get a CRT projector. But any way, Here is my setup right now.
Reflector >> 175 W MV >> Fresnal >> LCD >> DCV lens >> DCX Lens
Below is the list of parts I have bought for this project, whether or not i have used them:
3 fresnals @ 5.00
Delta HD 10 (?) Lens @ 10.00 + 18 shipping
Proxima ovation 810 640*480 panel @ 45.00
Jam it SVHS to VGA scaler @ 35.00
175 watt MV lamp @ 29.99
500 watt halogen worklight @ 9.00
So at the moment, my setup is ony 640*480, but replace the panel and i could have 1024*768. Right now the image is only watchable in complete dark, and it has a distinct green cast to it. Both of these problems will be solved when my new 250 Watt MH fixture arrives, it is in transit. ($64 including shipping)
If i had a good digital camera, i would show some pictures of the image produced, but all i have laying around is a Jam Cam 3.0, which is near useless in the dark.
With the MH the colors will render correctly, and the image will be much brighter. Probably will have to be watched in low ambient light anyway, but I really dont want to pay the electrical cost of a higher wattage setup. Once I add polarizers and a decent screen(my wall is medium grey), the image will be great for movies.
So your point is that you want someone to give you measured drawings and part lists (like PBS DIY woodshop shows) and proof of the output before you will even try. I am not trying to equal or surpass a 2000+ Xga lcd projector, or a CRT projector. I just want something to watch a movie on, and enjoy it. Who knows, maybe when I have more money I'll trow it out and get a CRT projector. But any way, Here is my setup right now.
Reflector >> 175 W MV >> Fresnal >> LCD >> DCV lens >> DCX Lens
Below is the list of parts I have bought for this project, whether or not i have used them:
3 fresnals @ 5.00
Delta HD 10 (?) Lens @ 10.00 + 18 shipping
Proxima ovation 810 640*480 panel @ 45.00
Jam it SVHS to VGA scaler @ 35.00
175 watt MV lamp @ 29.99
500 watt halogen worklight @ 9.00
So at the moment, my setup is ony 640*480, but replace the panel and i could have 1024*768. Right now the image is only watchable in complete dark, and it has a distinct green cast to it. Both of these problems will be solved when my new 250 Watt MH fixture arrives, it is in transit. ($64 including shipping)
If i had a good digital camera, i would show some pictures of the image produced, but all i have laying around is a Jam Cam 3.0, which is near useless in the dark.
With the MH the colors will render correctly, and the image will be much brighter. Probably will have to be watched in low ambient light anyway, but I really dont want to pay the electrical cost of a higher wattage setup. Once I add polarizers and a decent screen(my wall is medium grey), the image will be great for movies.
Halogens are typically in the 3000's. Qaurtz Halogen can be a higher temp, but, they usually output less lumens per watt I think. IMO, halogen just isnt efficient enough. they create a helluva lot of heat too, and, that can be annoying to manage.
tomithy83
At the right voltage a halogen bulb could be the right temp, but the bulbs get VERY hot. In my humble opinion I think that the replacement bulb from an existing projector or ohp would be the best option. However, the light that you choose is mostly dependant on the size and type of lcd you use. (i.e. the larger the lcd the brighter the light needs to be and also the optics must be larger.)
The design that I am working on uses a ohp replacement bulb/balast, a 2.5" lcd with composit in at 320X240, and a 35mm zoom lens from a camera.
This is untried at present but the light path traces work on paper.
At the right voltage a halogen bulb could be the right temp, but the bulbs get VERY hot. In my humble opinion I think that the replacement bulb from an existing projector or ohp would be the best option. However, the light that you choose is mostly dependant on the size and type of lcd you use. (i.e. the larger the lcd the brighter the light needs to be and also the optics must be larger.)
The design that I am working on uses a ohp replacement bulb/balast, a 2.5" lcd with composit in at 320X240, and a 35mm zoom lens from a camera.
This is untried at present but the light path traces work on paper.
the thing is though i dont have alot of initial money i dont want to spent $40 on a light then find out it dont work anyway i can get a halogen 10,000 lumens for $10 and i have plenty of glass and fans for cooling
tomithy83
If all you want to do is watch t.v. or dvd on it you could use this:
http://www.globalsources.com/Genera...roduct&action=GetPoint&point_id=3000000149695
one of your halogen lights, and a zoom lens from a 35mm camera.
I really think it would work if you can keep the temp down.
If all you want to do is watch t.v. or dvd on it you could use this:
http://www.globalsources.com/Genera...roduct&action=GetPoint&point_id=3000000149695
one of your halogen lights, and a zoom lens from a 35mm camera.
I really think it would work if you can keep the temp down.
No, I am not looking for PBS style instructions on how to do it. I'm a smart enough guy that I can do a project like this without anyone holding my hand. I just wanted proof of concept. The proof of concept that I've seen so far from over a year's worth of message thread has been an image that looks like it's come out of a 30 year old ViewMaster Projector. I don't find that satisfactory. If you do? More power to you. I just can't justify spending that much money and time on something that I know isn't even practical to begin with, let alone functional.
I made valid points about the shortcomings of these projectors and how to get around them, and all I've gotten back is hostile retorts trying to prove me wrong with excuses and why the laws of physics don't apply in their hometown roughly around their little workshop. The point of doing something yourself is to create a professional grade product without the professional grade price. A video projector is unfortunately a project not worth doing as a DIY unless you like trying to learn optics the hard way, flush money down the toilet and only want to build a $200-500+ "Gee-whiz Ma! Lookie whut I maeeed!" toy. If you're a hobbiest with that kind of income and want to do that? Again, more power to you... but it doesn't sound like you're one of them, otherwise you could afford a better digital camera and would already own a video projector.
I've got a point to this, but I'll save it since you've all probably labeled me a troll as is. Fine. I don't care. I just wanted to try and help by showing what needs to be done to get these to actually work, and maybe point out to the people on this thread who have dreams of sticking it to "the man" that they won't be anytime soon, at least not with this project. Take care and best of luck to you all.
I made valid points about the shortcomings of these projectors and how to get around them, and all I've gotten back is hostile retorts trying to prove me wrong with excuses and why the laws of physics don't apply in their hometown roughly around their little workshop. The point of doing something yourself is to create a professional grade product without the professional grade price. A video projector is unfortunately a project not worth doing as a DIY unless you like trying to learn optics the hard way, flush money down the toilet and only want to build a $200-500+ "Gee-whiz Ma! Lookie whut I maeeed!" toy. If you're a hobbiest with that kind of income and want to do that? Again, more power to you... but it doesn't sound like you're one of them, otherwise you could afford a better digital camera and would already own a video projector.
I've got a point to this, but I'll save it since you've all probably labeled me a troll as is. Fine. I don't care. I just wanted to try and help by showing what needs to be done to get these to actually work, and maybe point out to the people on this thread who have dreams of sticking it to "the man" that they won't be anytime soon, at least not with this project. Take care and best of luck to you all.
Dudes...
Thanks for the compliment on my image...
Check out these examples currently on ebay -
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1731671079
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1730204149
If you won these for $300, you'd be hard pressed to come up with something better for this money. $100 more for a Viewsonic TV tuner/scaler box and you'd have all the video inputs. I own this equipment and should know - I've posted links here showing the performance of this system.
A lesser, but watchable (in the dark...) system could be made from;
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1730204149
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1731300942
You should be able to get an image comparable to the one I just posted, for maybe $100 or so - if you win...happy bidding.
Minimizing both expense and effort, I do not think you can touch an assembly of these components - performance wise. If you dont like the OHP form factor? Use your imagination and engineering skills to mutate the combination into some other 3-D shape or size - ALL the necessary components are there.
Want even better performance? Add the optics from (slap on top of) for another $100 or so
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1351143865
This thing projects light just reflected off a piece of paper - should do a real good job with the itty-bitty light that makes it through the LCD....
Want to just say $^&* - it at a few hundred more? Just make sure you win
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1352921760
I guarantee you'll not touch the performance of this unit with any LCD based conglomeration. Yes, 6, 7, 8X the cost IS worth 100X the performance. My biggest problem is hanging the 175LB SUCKER from the ceiling - which is an engineering job in itself.
Joe Jasniewski is in no way connected with the sale of the above mentions items. These are mentioned only for the benefit of others who are looking for the best bang for the buck and effort as alternatives to expensive LCD projection units.
Thanks for the compliment on my image...
Check out these examples currently on ebay -
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1731671079
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1730204149
If you won these for $300, you'd be hard pressed to come up with something better for this money. $100 more for a Viewsonic TV tuner/scaler box and you'd have all the video inputs. I own this equipment and should know - I've posted links here showing the performance of this system.
A lesser, but watchable (in the dark...) system could be made from;
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1730204149
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1731300942
You should be able to get an image comparable to the one I just posted, for maybe $100 or so - if you win...happy bidding.
Minimizing both expense and effort, I do not think you can touch an assembly of these components - performance wise. If you dont like the OHP form factor? Use your imagination and engineering skills to mutate the combination into some other 3-D shape or size - ALL the necessary components are there.
Want even better performance? Add the optics from (slap on top of) for another $100 or so
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1351143865
This thing projects light just reflected off a piece of paper - should do a real good job with the itty-bitty light that makes it through the LCD....
Want to just say $^&* - it at a few hundred more? Just make sure you win
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1352921760
I guarantee you'll not touch the performance of this unit with any LCD based conglomeration. Yes, 6, 7, 8X the cost IS worth 100X the performance. My biggest problem is hanging the 175LB SUCKER from the ceiling - which is an engineering job in itself.
Joe Jasniewski is in no way connected with the sale of the above mentions items. These are mentioned only for the benefit of others who are looking for the best bang for the buck and effort as alternatives to expensive LCD projection units.
- Status
- Not open for further replies.