I've already posted in the plog board but I think it was the wrong place... nobody answered me. I don't know who the moderators of the forum are, if they can delate my other topic in the other session it would be nice.
Hi everyone,
I've just submitted this forum and to be sincere I don't understand everything very well yet.
I'm from Italy and in my country nobody ever heard about the possibility to build a pj!!!! So there are no italian sites to learn from... and it's not easy to understand the tecnical lenguage in english cos I'm not very good in eletric stuff even in italian (I'm an archaeologist...).
So here's what I have: I have a very little bedroom that I'm going to restyle completly... I've just bought the first element (for me the most important):
http://www.pixmania.co.uk/uk/uk/542109/art...nema-syste.html
for now I'm using it with my laptop as dvd player and monitor... that is not good for audio becouse my laptop has only one audio channel, so there's no point in having a sorround system... so I'm going to by a new dvd recorder in the close future! But I'm not very happy about buyng a lcd tv, too expensive for me for a good screen dimension! So here's the point... i'd love to biult a pj... but it's a hard work for me, never done anything like this...
my room is 3 m long so I have to place the screen about 2 m from the pj. My mother thinks it is too close for a good result but reading this forum you gave me back some hope... I've tried the focal calculator I've found in the forum, here it is the result:
http://blufiles.storage.live.com/y1pgUjNbx...Bek5VwaFC82MODE
what do you think about it?
other problem, this is my room disposition project:
http://blufiles.storage.live.com/y1pgUjNbx...N_7oALJg3i0Xd0Q
http://blufiles.storage.live.com/y1pgUjNbx...r8TkjSQVto5GNfc
the pj will be on a shelve over the bad underneath the bridged wardrobe and the screen will be in front of the boockcase on the wall infront of the bad, so the screen will be a take off one, it has to be removable when I don't use it, so I was thinking about a blackout courtain fixed on an horizontal pole to the ceiling by 2 hooks or something like that, so I can take it off and roll it up, do you think it will work???
Please every comment will help me, I really don't know where to star...
Is enybody able to tell me how much I'm going to spend aproximately for this project????
Please use simple language, not slang or too many abbreviations it really make it difficult to understand for me.
Thank you very much, I'm so excited about this project... I felt lost before finding this forum!!!!!
Full Version: Starting To Think About It...
Welcome Eilan.
Unfortunately, you links did not work, at least not for me. If you can update them it will be easier to respond to your specific room. You can also upload photos to this thread, but I believe you need at least 5 posts to do so. In any case, having a short "throw" (distance from lens to projection surface or screen) can be a benefit in DIY (Do It Yourself) projectors, because it can allow you to use a 15" LCD and a standard lens, both of which are less expensive than their longer throw "Pro" alternatives. They will, however, make your projector fairly large.
You may want to look at the following DIY stores in Europe, to save on shipping:
Proyector Barato (in Spain)
Izzotek (in France)
DIY Webshop (in Germany)
You also may want to collaborate with fellow LL members marcogt, Albertone90 and micheleraponi, Fizban, and metallo, who are all also in Italia.
Hope that helps.
Unfortunately, you links did not work, at least not for me. If you can update them it will be easier to respond to your specific room. You can also upload photos to this thread, but I believe you need at least 5 posts to do so. In any case, having a short "throw" (distance from lens to projection surface or screen) can be a benefit in DIY (Do It Yourself) projectors, because it can allow you to use a 15" LCD and a standard lens, both of which are less expensive than their longer throw "Pro" alternatives. They will, however, make your projector fairly large.
You may want to look at the following DIY stores in Europe, to save on shipping:
Proyector Barato (in Spain)
Izzotek (in France)
DIY Webshop (in Germany)
You also may want to collaborate with fellow LL members marcogt, Albertone90 and micheleraponi, Fizban, and metallo, who are all also in Italia.
Hope that helps.
Thank you very much! I've edited the links so now I think they work.
Thank you especially for the names of other italians, I'm going to write them!!!!
Thank you especially for the names of other italians, I'm going to write them!!!!
QUOTE (Eilan @ Jan 9 2008, 12:15 PM) 
I've edited the links so now I think they work.
That room is going to be difficult. Putting the projector right above you head (when lying in bed) will maximize the noise you hear from the fans.
Were you intending to put the screen here?
Click to view attachment
If so, what is the width of that space?
I don't think you're going to be able to use a 15" LCD. You'll need something smaller, both for the space you are trying to fit a projector into, and the size of the projection (I'm guessing).
QUOTE (sensibull @ Jan 9 2008, 07:02 PM)
That room is going to be difficult. Putting the projector right above you head (when lying in bed) will maximize the noise you hear from the fans.
Were you intending to put the screen here?
Click to view attachment
If so, what is the width of that space?
I don't think you're going to be able to use a 15" LCD. You'll need something smaller, both for the space you are trying to fit a projector into, and the size of the projection (I'm guessing).
Were you intending to put the screen here?
Click to view attachment
If so, what is the width of that space?
I don't think you're going to be able to use a 15" LCD. You'll need something smaller, both for the space you are trying to fit a projector into, and the size of the projection (I'm guessing).
yes the screen will be about there but not that big or it will be very difficoult to see a movie from the bad that's so close... it would be about 1,5 m width
Click to view attachment
OK. So you have 1.5m screen width to work with. That's approximately 60 inches, or a 68.75 inch/1.75m diagonal -- not very big, by the standards of most builders around here, but still pretty nice for a bedroom screen. I don't know about Italy, but 60 x 60 inch 4:3 aspect ratio screens are pretty common in the States and usually very cheap. I bought one used for $20.
Using focalcalc, I figure here's you best combination of parts, given the selection at those European stores (I went with just one, proyector barato, so you don't have to ship from different places).
7.1 Sharp LCD kit (1024 x 768) - 175 Euros
7" Optical Kit - 47 Euros
150w light kit with G12 base - 83 Euros OR 150w light kit with Rx7 base65 Euros.
Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters (you'll have to move the screen forward a bit, but if you hang it from the ceiling that shouldn't be a problem. It will also give you a very small box, and you won't need more than one fan to cool the 150w lamp. You would also want to add a reflector and possibly a condenser, but those parts would get you started.
Of course, the lowest total of the above is 287 Euros -- pretty close to the 299 Euros price of their cheapest projector. And that's not factoring in all the little parts like switches, fans, etc. Your projector would have higher resolution though, and the pride of having built it.
Alternately, you could use a 15 inch LCD, a 18 inch Beseler lens (a little harder to find), and get roughly the same result for probably a lot less money. You'd have a MUCH bigger box though, and you'd have to incorporate a mirror to get it to fit sideways on your shelf.
Using focalcalc, I figure here's you best combination of parts, given the selection at those European stores (I went with just one, proyector barato, so you don't have to ship from different places).
7.1 Sharp LCD kit (1024 x 768) - 175 Euros
7" Optical Kit - 47 Euros
150w light kit with G12 base - 83 Euros OR 150w light kit with Rx7 base65 Euros.
Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters (you'll have to move the screen forward a bit, but if you hang it from the ceiling that shouldn't be a problem. It will also give you a very small box, and you won't need more than one fan to cool the 150w lamp. You would also want to add a reflector and possibly a condenser, but those parts would get you started.
Of course, the lowest total of the above is 287 Euros -- pretty close to the 299 Euros price of their cheapest projector. And that's not factoring in all the little parts like switches, fans, etc. Your projector would have higher resolution though, and the pride of having built it.
Alternately, you could use a 15 inch LCD, a 18 inch Beseler lens (a little harder to find), and get roughly the same result for probably a lot less money. You'd have a MUCH bigger box though, and you'd have to incorporate a mirror to get it to fit sideways on your shelf.
QUOTE (sensibull @ Jan 10 2008, 03:11 PM)
OK. So you have 1.5m screen width to work with. That's approximately 60 inches, or a 68.75 inch/1.75m diagonal -- not very big, by the standards of most builders around here, but still pretty nice for a bedroom screen. I don't know about Italy, but 60 x 60 inch 4:3 aspect ratio screens are pretty common in the States and usually very cheap. I bought one used for $20.
Using focalcalc, I figure here's you best combination of parts, given the selection at those European stores (I went with just one, proyector barato, so you don't have to ship from different places).
7.1 Sharp LCD kit (1024 x 768) - 175 Euros
7" Optical Kit - 47 Euros
150w light kit with G12 base - 83 Euros OR 150w light kit with Rx7 base65 Euros.
Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters (you'll have to move the screen forward a bit, but if you hang it from the ceiling that shouldn't be a problem. It will also give you a very small box, and you won't need more than one fan to cool the 150w lamp. You would also want to add a reflector and possibly a condenser, but those parts would get you started.
Of course, the lowest total of the above is 287 Euros -- pretty close to the 299 Euros price of their cheapest projector. And that's not factoring in all the little parts like switches, fans, etc. Your projector would have higher resolution though, and the pride of having built it.
Alternately, you could use a 15 inch LCD, a 18 inch Beseler lens (a little harder to find), and get roughly the same result for probably a lot less money. You'd have a MUCH bigger box though, and you'd have to incorporate a mirror to get it to fit sideways on your shelf.
Using focalcalc, I figure here's you best combination of parts, given the selection at those European stores (I went with just one, proyector barato, so you don't have to ship from different places).
7.1 Sharp LCD kit (1024 x 768) - 175 Euros
7" Optical Kit - 47 Euros
150w light kit with G12 base - 83 Euros OR 150w light kit with Rx7 base65 Euros.
Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters (you'll have to move the screen forward a bit, but if you hang it from the ceiling that shouldn't be a problem. It will also give you a very small box, and you won't need more than one fan to cool the 150w lamp. You would also want to add a reflector and possibly a condenser, but those parts would get you started.
Of course, the lowest total of the above is 287 Euros -- pretty close to the 299 Euros price of their cheapest projector. And that's not factoring in all the little parts like switches, fans, etc. Your projector would have higher resolution though, and the pride of having built it.
Alternately, you could use a 15 inch LCD, a 18 inch Beseler lens (a little harder to find), and get roughly the same result for probably a lot less money. You'd have a MUCH bigger box though, and you'd have to incorporate a mirror to get it to fit sideways on your shelf.
I think I love you!!!!! I was starting to think I will never understand anyting... you are the best! I will follow you suggestions, thankyou thankyou thankyou!!!!!
Prego.
I think I should clarify something I said in that last post though.
When I said: "Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters" I may have confused things a bit. "Unsplit" just means that both your rear and your front fresnel (in the case of the 7" optics kit, a 160mm for the rear, and a 305mm for the front) are behind the LCD. This provides the best focus and clarity, but does not allow you to "keystone" which means angling the front fresnel to compensate for distortions introduced when the lens is angled up or down from the screen. To keystone, you need to use a split setup (one fresnel before the LCD, one after). But if you can place your projector so that the lens is exactly in the middle of your projection screen, then you don't need keystoning and can use the unsplit setup. Either way, just make sure the fresnels have their grooved sides facing each other.
Just didn't want you thinking "unsplit" meant centering the lens in the middle of the screen.
p.s. with those 7" components, you can actually have the screen at 2.35 meters to get the 1.75m diagonal.
I think I should clarify something I said in that last post though.
When I said: "Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters" I may have confused things a bit. "Unsplit" just means that both your rear and your front fresnel (in the case of the 7" optics kit, a 160mm for the rear, and a 305mm for the front) are behind the LCD. This provides the best focus and clarity, but does not allow you to "keystone" which means angling the front fresnel to compensate for distortions introduced when the lens is angled up or down from the screen. To keystone, you need to use a split setup (one fresnel before the LCD, one after). But if you can place your projector so that the lens is exactly in the middle of your projection screen, then you don't need keystoning and can use the unsplit setup. Either way, just make sure the fresnels have their grooved sides facing each other.
Just didn't want you thinking "unsplit" meant centering the lens in the middle of the screen.
p.s. with those 7" components, you can actually have the screen at 2.35 meters to get the 1.75m diagonal.
QUOTE (sensibull @ Jan 10 2008, 07:18 PM)
Prego.
I think I should clarify something I said in that last post though.
When I said: "Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters" I may have confused things a bit. "Unsplit" just means that both your rear and your front fresnel (in the case of the 7" optics kit, a 160mm for the rear, and a 305mm for the front) are behind the LCD. This provides the best focus and clarity, but does not allow you to "keystone" which means angling the front fresnel to compensate for distortions introduced when the lens is angled up or down from the screen. To keystone, you need to use a split setup (one fresnel before the LCD, one after). But if you can place your projector so that the lens is exactly in the middle of your projection screen, then you don't need keystoning and can use the unsplit setup. Either way, just make sure the fresnels have their grooved sides facing each other.
Just didn't want you thinking "unsplit" meant centering the lens in the middle of the screen.
p.s. with those 7" components, you can actually have the screen at 2.35 meters to get the 1.75m diagonal.
I think I should clarify something I said in that last post though.
When I said: "Using those parts in an unsplit setup (this assumes you can place your lens at the exact center of your screen, vertically) will give you a 1.75m diagonal at 2.3meters" I may have confused things a bit. "Unsplit" just means that both your rear and your front fresnel (in the case of the 7" optics kit, a 160mm for the rear, and a 305mm for the front) are behind the LCD. This provides the best focus and clarity, but does not allow you to "keystone" which means angling the front fresnel to compensate for distortions introduced when the lens is angled up or down from the screen. To keystone, you need to use a split setup (one fresnel before the LCD, one after). But if you can place your projector so that the lens is exactly in the middle of your projection screen, then you don't need keystoning and can use the unsplit setup. Either way, just make sure the fresnels have their grooved sides facing each other.
Just didn't want you thinking "unsplit" meant centering the lens in the middle of the screen.
p.s. with those 7" components, you can actually have the screen at 2.35 meters to get the 1.75m diagonal.
I think I got it.
thank you!
Another thing...
Don't limit yourself with PAL resolutions... if you have the money, the ability and the time to do this, try to make an HDTV projector, and you won't believe your own eyes...
Ciauz di nuovo
p.s. se hai bisogno mandami un pm... cosė ti mando i link di qualche altra community.... anche se ho pochi post (non ho mai tempo di scrivere sul forum) posso dire ormai di avere una gran cultura sui proiettori diy... il mio HDTV č quasi finito
Don't limit yourself with PAL resolutions... if you have the money, the ability and the time to do this, try to make an HDTV projector, and you won't believe your own eyes...
Ciauz di nuovo
p.s. se hai bisogno mandami un pm... cosė ti mando i link di qualche altra community.... anche se ho pochi post (non ho mai tempo di scrivere sul forum) posso dire ormai di avere una gran cultura sui proiettori diy... il mio HDTV č quasi finito
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