Hi,
I'm Arthur and I'm in New Zealand,
I'm looking at building a projector, first I'll list the best two products I've found so far:
-SAMSUNG 740N 17" 1280X1024 8MS LCD MONITOR:
http://supercheappc.co.nz/site/product_info.php?products_id=955
-3M 9550 Overhead Projector:
http://www.touchboards.com/a3m/ohp9550.asp
http://www.trademe.co.nz/Business-farming-industry/Office/Other/auction-180727202.htm
These two products will cost me NZ$ 525.00 (US$ 325), If I pull them both apart and build a box to house the components then play around with the positioning will I get a balanced projector?
Will I need to use extra cooling, lighting etc?
How hard would it be to make all this work?
Are there any tried but true designs or do parts vary so much that it is pointless?
Are there any pages that show a step by step process of this concept to give a decent idea of what is involved?
I'm Arthur and I'm in New Zealand,
I'm looking at building a projector, first I'll list the best two products I've found so far:
-SAMSUNG 740N 17" 1280X1024 8MS LCD MONITOR:
http://supercheappc.co.nz/site/product_info.php?products_id=955
-3M 9550 Overhead Projector:
http://www.touchboards.com/a3m/ohp9550.asp
http://www.trademe.co.nz/Business-farming-industry/Office/Other/auction-180727202.htm
These two products will cost me NZ$ 525.00 (US$ 325), If I pull them both apart and build a box to house the components then play around with the positioning will I get a balanced projector?
Will I need to use extra cooling, lighting etc?
How hard would it be to make all this work?
Are there any tried but true designs or do parts vary so much that it is pointless?
Are there any pages that show a step by step process of this concept to give a decent idea of what is involved?
Overhead projector is an easy way to get a projector going. A few things to consider though:
1. The stage dimensions are 11.2" x 11.25", which most likely will not cover a 4:3 17" monitor (it will probably cover 15" LCD or smaller)
2. an extra fan blowing cool air over LCD is always recommended with OHP
3. It uses 400w halogen bulbs which don't last very long (50hrs), however the bulbs can be bought in bulk for cheap(ebay) and have instant on/off
4. 400w halogen has luminous flux 14000 lumens. My old Infocus LitePro 550 used same bulb and the picture definitely bright enough, however the halogen bulbs are a little yellow in colour, so you may have to adjust colour settings or get some sort of colour filter (i think a blue tinted film is used) over your frenels or LCD (don't quote me on this please!)
5. You may also want to cover up all light-leaks ie. enclose the area from open stage the triplet lens
All in all, it's the quickest way to get a projector. I don't know how many people have done it, but you could look to modding the light engine with a small 150w Metal Halide (Philips CDM 150w bi-pin is the smallest one I know of at 20mm diameter, and may fit directly inside the OHP engine) which is 12-13000 luminous flux and lasts 12000 hrs and are pretty cheap.
Check out tescorp's (diyprojectorkits.com), lumenlab.com (the forums have a few OHP builds to check out), allinbox.com (it's in French so translater might be helpful); diy-community.de and there's another Dutch DIY PJ site that I cannot remember but they also might have good info on OHP builds. Ledpj.com is Chinese site but very difficult to understand (even with translator)
I hope this helps!
1. The stage dimensions are 11.2" x 11.25", which most likely will not cover a 4:3 17" monitor (it will probably cover 15" LCD or smaller)
2. an extra fan blowing cool air over LCD is always recommended with OHP
3. It uses 400w halogen bulbs which don't last very long (50hrs), however the bulbs can be bought in bulk for cheap(ebay) and have instant on/off
4. 400w halogen has luminous flux 14000 lumens. My old Infocus LitePro 550 used same bulb and the picture definitely bright enough, however the halogen bulbs are a little yellow in colour, so you may have to adjust colour settings or get some sort of colour filter (i think a blue tinted film is used) over your frenels or LCD (don't quote me on this please!)
5. You may also want to cover up all light-leaks ie. enclose the area from open stage the triplet lens
All in all, it's the quickest way to get a projector. I don't know how many people have done it, but you could look to modding the light engine with a small 150w Metal Halide (Philips CDM 150w bi-pin is the smallest one I know of at 20mm diameter, and may fit directly inside the OHP engine) which is 12-13000 luminous flux and lasts 12000 hrs and are pretty cheap.
Check out tescorp's (diyprojectorkits.com), lumenlab.com (the forums have a few OHP builds to check out), allinbox.com (it's in French so translater might be helpful); diy-community.de and there's another Dutch DIY PJ site that I cannot remember but they also might have good info on OHP builds. Ledpj.com is Chinese site but very difficult to understand (even with translator)
I hope this helps!
3M 9550 Overhead Projector is too small , can not fit 17", 13.3 is the bigger choice.
and those are bad :
Lamp type: EVD (36 volts, 400 watts)
Lamp life: 50 hours average
and those are bad :
Lamp type: EVD (36 volts, 400 watts)
Lamp life: 50 hours average
both are good, but diyprojectorkits is more specialised in terms of custom building so you can have stuff made/ordered according to your needs, whereas lumenlab just sells the parts and rest is up to you. both also have forums where good advice can be found
send them an email to find out how you can be helped
send them an email to find out how you can be helped
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