I have just bought one of these yesterday and hope to use it as a standard front DLP projector. Is there a way of switching the horizontal picture or will I have to use another mirror?
http://www.surplusshed.com/pages/item/i1478.html
Cheers for any advice on this. Also would a home brew halogen lamp be easy to install on this as it seems to be a specially designed lamp that may be difficult to locate
Cheers Tom
http://www.surplusshed.com/pages/item/i1478.html
Cheers for any advice on this. Also would a home brew halogen lamp be easy to install on this as it seems to be a specially designed lamp that may be difficult to locate
Cheers Tom
I really wish I had a spare $175 right now 
That thing looks awesome.
The latest trend in DIY seems to be retrofitting so if everything on the DLP works it should actually be easier than with an actual projector b/c it is all open and not as small. Not the greatest wealth of details on surplus shed though. Looks like it has a nice VGA connector though. The one question I have is whether or not there is a projection lens included or was it used for some other purpose? I couldn't tell from the pics, or maybe I missed something..
edit: never-mind I see they stated that "projection optics" are there.
Definitely keep us updated on what you do with it. Looks like a great project.
That thing looks awesome.The latest trend in DIY seems to be retrofitting so if everything on the DLP works it should actually be easier than with an actual projector b/c it is all open and not as small. Not the greatest wealth of details on surplus shed though. Looks like it has a nice VGA connector though. The one question I have is whether or not there is a projection lens included or was it used for some other purpose? I couldn't tell from the pics, or maybe I missed something..
edit: never-mind I see they stated that "projection optics" are there.
Definitely keep us updated on what you do with it. Looks like a great project.
I ordered it yesterday should be here within the week cost me $365 delivered to the UK. Read this and you may be able to compare this to other spec DLP Projectors out there. I`m hoping to be able to adjust the image size and focus easily. The main problem would be flipping the picture horizontally. I would rather do this digitally as the mirrors would cost more and affect picture quality. The light seems to be my biggest stumbling block the site quotes a specialist light source and holder yet company documents seem to indicate a simple halogen bulb. I take great comfort in this news. I hope this unit would be able to project an image well in excess of 100" with near perfect quaility. The projected price total of the project is around $600 or £300. Home systems with anything like this performance start from £1100.
http://www.dvc400.com/papers/dlp_image98.pdf#search='DIAMOND%20VISIONICS%20DLP%20PROJECTION%20SYSTEM'
I will keep all informed about the project and total expenditure. Surplus Shed is an excellent place. For once I`m envious of our American cousins. LOL
Cheers Tom
http://www.dvc400.com/papers/dlp_image98.pdf#search='DIAMOND%20VISIONICS%20DLP%20PROJECTION%20SYSTEM'
I will keep all informed about the project and total expenditure. Surplus Shed is an excellent place. For once I`m envious of our American cousins. LOL
Cheers Tom
After taking a quick look over the document it indeed does look like it is a halogen, a 12V to be exact. Although it was unclear whether they meant for the prototype or the production version, thought they could be the same. (Not sure which the surplus shed one is either, if it is proto it is only 800x600, but if it is a production version it is 1024x768). I'm not too clear on the basics of DLP but it looks like this system was designed for a 26" screen, so you might end up having to change out some optics or something in order to get a focused image of a bigger size.
I did some other searching for background into Diamond Visionics but it just looks like they are a contractor for a lot of big corporations, and the U.S. Government. And I couldn't find any further info on the DLP system other than that PDF you linked too.
Looks like a great project. Maybe you will discover some special properties of this thing since it was designed for the military
I did some other searching for background into Diamond Visionics but it just looks like they are a contractor for a lot of big corporations, and the U.S. Government. And I couldn't find any further info on the DLP system other than that PDF you linked too.
Looks like a great project. Maybe you will discover some special properties of this thing since it was designed for the military
Spoke to a helpful woman at Visonoics. She has sent me a copy of the user manual. If you let me have your e-mail address i`ll send you a copy and maybe you could give me a hand to figure out a work around for the bulb. The correct buld is a L6072 from Hamamatsu. They retail at $700 but they don`t make them anymore. Stephanie says she can get me one but it bumps the project price too high.
Cheers Tom
Cheers Tom
hi guys, ive skimmed through this reading in hope to find a cheap soloution for a screen.
i just garbage picked a 53" Toshiba RPTV, holy crap is it deluxe. Only 1 problem, its missing the front screen, and as we watch it, all we see are the RGB tubes in the back of the image...the front fresnel is there, i cant find anything else wrong with it.
is there either A a cheaper soloution? or B somewhere i can order the screen...my dad loves it, hes even willing to help chip in a 100$ for the new screen..
or would i be better off asking a repair shop?
thanks in advance.
i just garbage picked a 53" Toshiba RPTV, holy crap is it deluxe. Only 1 problem, its missing the front screen, and as we watch it, all we see are the RGB tubes in the back of the image...the front fresnel is there, i cant find anything else wrong with it.
is there either A a cheaper soloution? or B somewhere i can order the screen...my dad loves it, hes even willing to help chip in a 100$ for the new screen..
or would i be better off asking a repair shop?
thanks in advance.
think ive got something
hi guys. think ive got something here:
http://cgi.ebay.com/REAR-PROJECTION...ryZ48655QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
Im thinkin about emailing them with some questions. Looks to me in the picture they just have a front projection screen
Im looking do to a screen thats 40" tall, and 34" high, so i get:
46" x 40"=1840
1840/144=12.7777778 rounded =13
13x 7.85= 102.50$
Not TOO bad, considaring this is one deluxe tv i found lol. it already has the fresnel lense.
ive been talking to Mbates for quite some time, he has a screen exactly for my use, however transportation isnt exactly on either of our sides to get it to cleveland
hi guys. think ive got something here:
http://cgi.ebay.com/REAR-PROJECTION...ryZ48655QQssPageNameZWD1VQQrdZ1QQcmdZViewItem
Im thinkin about emailing them with some questions. Looks to me in the picture they just have a front projection screen
Im looking do to a screen thats 40" tall, and 34" high, so i get:
46" x 40"=1840
1840/144=12.7777778 rounded =13
13x 7.85= 102.50$
Not TOO bad, considaring this is one deluxe tv i found lol. it already has the fresnel lense.
ive been talking to Mbates for quite some time, he has a screen exactly for my use, however transportation isnt exactly on either of our sides to get it to cleveland
painting
i noticed some pople here were complaining about the light bleeding on the outer edges of the image... i was wondering if the old Tv projecter( upside down Tv with a frenzel lens) trick of painting the inside of the unit black helps with the lightting issues... noting on how it is better on the unit... also other than getting a shower curtin from walmart should'nt there be an affordable way to build a screen than that.... i am figuring that the easiest way to make your own would be to buy some old broken projection Tv and just slap your own home made unit in there...
i noticed some pople here were complaining about the light bleeding on the outer edges of the image... i was wondering if the old Tv projecter( upside down Tv with a frenzel lens) trick of painting the inside of the unit black helps with the lightting issues... noting on how it is better on the unit... also other than getting a shower curtin from walmart should'nt there be an affordable way to build a screen than that.... i am figuring that the easiest way to make your own would be to buy some old broken projection Tv and just slap your own home made unit in there...
hmm
ive read every post on here... has anyone found a good solution to the screen material yet? i am curious about it... i dont like the idea of using the shower curtin because it is to transparent... i was thinking about using sheets of the flouresent light fixtures (transparent design) to place behind the curtin and work as a double, diffuser/light blocker...
also i noticed some cheap low res projectors on ebay for 189$ would that be a simple way to make a projector as in all i need to do is put the image against something, no worries on how to even out hotspotting.
i am going to build my box out of those black hefty trashbags as a an idea of how the unit would work with the interior compleatly blacked out... it would keep the ambient light out... than later i would like to build the wood and paint it black if it works out... this will require much work...
i am also thinking of skipping the plexiglass all togeather...
any suggestions?
ive read every post on here... has anyone found a good solution to the screen material yet? i am curious about it... i dont like the idea of using the shower curtin because it is to transparent... i was thinking about using sheets of the flouresent light fixtures (transparent design) to place behind the curtin and work as a double, diffuser/light blocker...
also i noticed some cheap low res projectors on ebay for 189$ would that be a simple way to make a projector as in all i need to do is put the image against something, no worries on how to even out hotspotting.
i am going to build my box out of those black hefty trashbags as a an idea of how the unit would work with the interior compleatly blacked out... it would keep the ambient light out... than later i would like to build the wood and paint it black if it works out... this will require much work...
i am also thinking of skipping the plexiglass all togeather...
any suggestions?
Free RPTV offer....HURRY!
I've been offering a 41" NEC RPTV with no takers. If any of you sleepyheads want a big leg up on a DIY RPTV project this would be a terrific way to start. It is about 1-1/4 hr's NW of Toronto. If not picked up within a week it is going outside and that will be the practical end of it. It will immediately become frozen cracked optics junk.
My patience grows thin as I really need the room. I don't care now that I have $250 tied up in it. My PM is enabled. Hint hint.
I've been offering a 41" NEC RPTV with no takers. If any of you sleepyheads want a big leg up on a DIY RPTV project this would be a terrific way to start. It is about 1-1/4 hr's NW of Toronto. If not picked up within a week it is going outside and that will be the practical end of it. It will immediately become frozen cracked optics junk.
My patience grows thin as I really need the room. I don't care now that I have $250 tied up in it. My PM is enabled. Hint hint.
Sand Blasting Plexiglass
Im working on building a DIY projector, but if i can get a rear screen projector working, i would favor that most. i just bought a sand blaster for numerous jobs around the garage. i was just wondering how effective is this concept. does any one have any complaints on this?
Im working on building a DIY projector, but if i can get a rear screen projector working, i would favor that most. i just bought a sand blaster for numerous jobs around the garage. i was just wondering how effective is this concept. does any one have any complaints on this?
Don't know about Plexiglass but sandblasted glass works a treat, I used to use it for 16mm RP. And used to make it myself.
Give it a try, sounds like you have all the kit, a good tip is to blast it more than you think would be neccessory, so the glass looks almost white. The results are very good, with no hot spots if sand blased sufficiently. Oh and another advantage is glass/ plexiglass is cheap.
And to add a coment regarding rear projection screens for projectors that you can buy, good quality ones tend to be very expensive, dont go for the cheaper ones, they are not really worth the money, and will eat light form the projector.
Hope this helps,
James
Give it a try, sounds like you have all the kit, a good tip is to blast it more than you think would be neccessory, so the glass looks almost white. The results are very good, with no hot spots if sand blased sufficiently. Oh and another advantage is glass/ plexiglass is cheap.
And to add a coment regarding rear projection screens for projectors that you can buy, good quality ones tend to be very expensive, dont go for the cheaper ones, they are not really worth the money, and will eat light form the projector.
Hope this helps,
James
well not really to be honest with you, well not any suggestions that will result in a quality screen that can be made at home anyway. There have been suggestions of using shower curtains or lots of sheets of tracing paper, but few have had good results with these.
As far as I see it, the problem of building a DIY PRTV / Projector is one of cost now, the alternatives are now very cheap. Here in the UK you can buy a very good LCD or DLP projector designed for home cinema use for under £500 GBP often including a deal to get a free spare bulb (thats about 700USD aprox)
a quick look on google brought up this:
E.g. BenQ W100
DLP: WVGA 954x480 (so fine for watching TV)
1300 lumens
for £498 GBP including VAT and delivery, and a bulb is only £82 with the included vouchers. And I have seen new WXGA or XGA ones going for about £500 as well, just have to shop around, and haggle sometimes.
And LCD and Plasma tvs are dropping in price very quickly now HDTV is avalable here, granted that very few of them can actully display the format Sky is broadcasting but still.
But dont let that put you off, after all buying something doesnt have the fun of making something for yourself!
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.