I will most definately make a video of my projector once I build it.
Whats guage? Is it a spelling mistake for judge or em I not that good in english, lol? (seriously though...)
Whats guage? Is it a spelling mistake for judge or em I not that good in english, lol? (seriously though...)
Help with this project
Im kind of new but not that new i have read alot and have built a pj before but the one i built was with a bigger lcd and ohp parts. now i want to try to build a video slide projector but have a problem that i can't figure out by my self. this is the slide projector i found and am going to use. It seems ok except that it seems to maybe only support a 2 inch slide and the lcd im using is the hip gear 2.6 " lcd. and is rounding of the edges. there will be pictures to follow. inside the projector there is a 300 watt bulb that is very bright even in light, a refelctor is built into the light box and had a condensor and uv light filter i belive and a triplet lens(maybe or larger condensor) it looks like. what i have been thinking is if i remove the uv filter and the first smaller condensor and then even move the triplet lens(condensor) closer to the bulb then maybe put a fensel(sp) then lcd then a fensel(sp) then the lens and am hoping then that i could stop the rounding of the lcd. i might have to change the size of the lens. People that understand optics better then me can you please help me. not that i really care to get this to work or to even use this projector but hate to waste and not learn.
Im kind of new but not that new i have read alot and have built a pj before but the one i built was with a bigger lcd and ohp parts. now i want to try to build a video slide projector but have a problem that i can't figure out by my self. this is the slide projector i found and am going to use. It seems ok except that it seems to maybe only support a 2 inch slide and the lcd im using is the hip gear 2.6 " lcd. and is rounding of the edges. there will be pictures to follow. inside the projector there is a 300 watt bulb that is very bright even in light, a refelctor is built into the light box and had a condensor and uv light filter i belive and a triplet lens(maybe or larger condensor) it looks like. what i have been thinking is if i remove the uv filter and the first smaller condensor and then even move the triplet lens(condensor) closer to the bulb then maybe put a fensel(sp) then lcd then a fensel(sp) then the lens and am hoping then that i could stop the rounding of the lcd. i might have to change the size of the lens. People that understand optics better then me can you please help me. not that i really care to get this to work or to even use this projector but hate to waste and not learn.
the light projected with the lcd placed in slide opening hard to tell but maybe you can see that it is rounding the conners off and thats the problem i have not do anything really to the thing just some pre install stuff to tell if it would work and it does not so please help me.
Attachments
im also thinking of placeing a fan on top the will pull the air out and have the fan on the bottom to blow air up... right now it seems that it blows the air out but to me it seems to make more sense to blow hot air out the top as hot air rises and allow the cool air from the bottom to be sucked in.
helping me is a worthy cause? 😀
😀
i don't know anything at all about this stuff .... if someone would just post a step by step for me or send me a guide or tutorial to making it work.... also i want an extremely crisp picture so size of the lcd resolution to effect of pixelization on the screen.... I am in college and want a projector for my room and need to do this as cheaply but i also want to keep it in working state for long period without having to repair often..... i have the time to invest to make it really nice but i just need to have a beautiful picture cheaply.....
you guys have the idea ..... sorry i am a noobie but anyone willing to truely help me would be greatly appreciated ... i also think the work i have seen is good ....
😀
i don't know anything at all about this stuff .... if someone would just post a step by step for me or send me a guide or tutorial to making it work.... also i want an extremely crisp picture so size of the lcd resolution to effect of pixelization on the screen.... I am in college and want a projector for my room and need to do this as cheaply but i also want to keep it in working state for long period without having to repair often..... i have the time to invest to make it really nice but i just need to have a beautiful picture cheaply.....
you guys have the idea ..... sorry i am a noobie but anyone willing to truely help me would be greatly appreciated ... i also think the work i have seen is good ....
Hey colorless_1 - looks like you're on your way!
I too experience slightly rounded edges, unfortunately I think this is going to be a limitation of the type of equipment we're trying to use. Mine are barely noticable now. Keep in mind that a slide projector is attempting to display a fairly small object - even that 2.5" screen is bigger than a normal slide. I still am pretty new to the optics stuff so don't know if someone might have a good solution. I think I might try shortening the barrel that the projection lens sits in - it may be trimming the image.
As for the fan - I have a projector similiar to yours, with a fan at the bottom. Works great as is - ran it for 3 hours on Saturday and no heat problems at all. LCD was not even warm to the touch. I think the airflow in these was designed pretty well.
Usagix2000 - if you want "an extremely crisp picture", then this 2.5" project is probably not what you're looking for. I had a blast building it and have watched movies with it - but the pixelation is noticable. Sounds like you want a full-fledged projector. Would suggest looking at the 7" models or even go to the 15" model. I am planning to build the 15" next. Here's what it will likely cost you. You'll need optics (~ $70) an LCD ($150 and up) a bulb and ballast ($70 and up for both) and of course the box and gadgets to put it all together. This is not as cheap as the $40 spent on a slide projector project 😉 but will give you great quality.
I too experience slightly rounded edges, unfortunately I think this is going to be a limitation of the type of equipment we're trying to use. Mine are barely noticable now. Keep in mind that a slide projector is attempting to display a fairly small object - even that 2.5" screen is bigger than a normal slide. I still am pretty new to the optics stuff so don't know if someone might have a good solution. I think I might try shortening the barrel that the projection lens sits in - it may be trimming the image.
As for the fan - I have a projector similiar to yours, with a fan at the bottom. Works great as is - ran it for 3 hours on Saturday and no heat problems at all. LCD was not even warm to the touch. I think the airflow in these was designed pretty well.
Usagix2000 - if you want "an extremely crisp picture", then this 2.5" project is probably not what you're looking for. I had a blast building it and have watched movies with it - but the pixelation is noticable. Sounds like you want a full-fledged projector. Would suggest looking at the 7" models or even go to the 15" model. I am planning to build the 15" next. Here's what it will likely cost you. You'll need optics (~ $70) an LCD ($150 and up) a bulb and ballast ($70 and up for both) and of course the box and gadgets to put it all together. This is not as cheap as the $40 spent on a slide projector project 😉 but will give you great quality.
well everything was going well untill the bulb blew up so i looked up the bulb the bulb has good lumens and decent watts but then i looked at the average hrs and is only 25 hrs so does anybody know of a replacement blub that replaces the cwd bulb. the daf bulb uses the same base and same wattage but seems to last 300 hours but i think i still want something that lasts longer anyone have a suggestion the base is a g17q(7) but seems the (7) makes no difference. thanks in advance. also if anyone knows a place in winnipeg that might sell theses bulbs can you please let me know im going to look in the yellow pages tommorow but it could save me sometime as time is something i don;t seem to have lots of.
thanks
thanks
Ok I havent posted any progress on my project after stripping my lcd (sorry!), so here goes.
I got the 500watt halogen worklight, and its pretty bright, and DAMN hot! It was on sale too, $8.99 canadian! And replacement bulbs - 3.99 for 2! I think they were 8,500 lumens (not that much, but enough for a 40" screen I think, lol.)
I decided to get a cold mirror (found someone locally that I could get a trade on, a small sized one). I have some heatsinks and fans from older computers somewhere for the mirror (i have 2 pentium 2 processors near me right now that I could take the coolers off of.).
Im still unsure of the lens, but it will most likely be the Delta 4 CRT projection lens, due to its efficiency, and built in focusing/mounting mechanism.
Also proper cooling for the rest of the projector, not just the cold mirror - I have several 80 and 120mm computer fans that could do the trick, but depending on the heat after the cold mirror, I may go with a smaller or quieter fan solution.
HEY CAN I install a dimmer onto this 500W halogen?
A condensor - I have some doublet lens, part of an old CRT projection lens, that is about 100mm diameter and has only like a 50-100mm focal lenght, that might work. If not - a fresnel.
Also a UV filet ofcource I will need. I decided on a sheet of lexan xl from Home Depot. I was on my way there with my dad when I found something better...
I found a Sony RPTV!!! YAY!!!
Seems dead, lol.
Its an August 1992 Sony Cinemascope, Model KPR - 41EXR95.
Any help on starting it is appreciated. Its completely dead, like its not even plugged in. The main fuse (6.3A) seems fine though.
I think if I dont get it running - I will use it with my LCD projector inside. It has a 40" lenticular screen, Delta 77 CRT lenses, and a very big front surface mirror. Also 2 way, about 5" diameter stereo speakers that I may also use in conjunction with some amp. And ofcource the jacks and powercord in the back will be used.
I got the 500watt halogen worklight, and its pretty bright, and DAMN hot! It was on sale too, $8.99 canadian! And replacement bulbs - 3.99 for 2! I think they were 8,500 lumens (not that much, but enough for a 40" screen I think, lol.)
I decided to get a cold mirror (found someone locally that I could get a trade on, a small sized one). I have some heatsinks and fans from older computers somewhere for the mirror (i have 2 pentium 2 processors near me right now that I could take the coolers off of.).
Im still unsure of the lens, but it will most likely be the Delta 4 CRT projection lens, due to its efficiency, and built in focusing/mounting mechanism.
Also proper cooling for the rest of the projector, not just the cold mirror - I have several 80 and 120mm computer fans that could do the trick, but depending on the heat after the cold mirror, I may go with a smaller or quieter fan solution.
HEY CAN I install a dimmer onto this 500W halogen?
A condensor - I have some doublet lens, part of an old CRT projection lens, that is about 100mm diameter and has only like a 50-100mm focal lenght, that might work. If not - a fresnel.
Also a UV filet ofcource I will need. I decided on a sheet of lexan xl from Home Depot. I was on my way there with my dad when I found something better...
I found a Sony RPTV!!! YAY!!!
Seems dead, lol.
Its an August 1992 Sony Cinemascope, Model KPR - 41EXR95.
Any help on starting it is appreciated. Its completely dead, like its not even plugged in. The main fuse (6.3A) seems fine though.
I think if I dont get it running - I will use it with my LCD projector inside. It has a 40" lenticular screen, Delta 77 CRT lenses, and a very big front surface mirror. Also 2 way, about 5" diameter stereo speakers that I may also use in conjunction with some amp. And ofcource the jacks and powercord in the back will be used.
thanks noventix .... perhaps you could point me toward a design better suited to project from 10 feet away and results in viewing screen of 50" to 80" ... 60" ideal with not as perfect quality as i had mentioned before.... realization of money being a tight factor as i am a college student.... if not thanks for your help.... if so more thanks ..... also sorry to take away from original topic
ancorp,
that is great !! I've thought about that myself as one of my wishes would be a DIY RPTV that I could watch during daytime... just haven't gotten around to looking for a dead one, or calling around...
I'm waiting on my cold mirror from surplus shed... I went ahead and also got the hot mirror just to try and learn how it works... BTW Guy, you mentioned a black heatsink... does it have to be black? I'm guessing not, but just to make sure I'll ask.
I'll be making a frame for the lcd... I'll use the actual base from the controller to make it, that might even give me an extra layer of protection against dirt or what not.
I've got a electronics question now... I've got this mini ATX power supply, and would fit great for the fans and all... but how do I make it to turn off/on? The AT ones have the switch, but this atx doesn't... any ideas?
that is great !! I've thought about that myself as one of my wishes would be a DIY RPTV that I could watch during daytime... just haven't gotten around to looking for a dead one, or calling around...
I'm waiting on my cold mirror from surplus shed... I went ahead and also got the hot mirror just to try and learn how it works... BTW Guy, you mentioned a black heatsink... does it have to be black? I'm guessing not, but just to make sure I'll ask.
I'll be making a frame for the lcd... I'll use the actual base from the controller to make it, that might even give me an extra layer of protection against dirt or what not.
I've got a electronics question now... I've got this mini ATX power supply, and would fit great for the fans and all... but how do I make it to turn off/on? The AT ones have the switch, but this atx doesn't... any ideas?
Try shorting these 2 wires:
If not shorting maybe place a small resistor between them. I have read though that using this method isnt necessarily good for the PSU. I used to have something rigged up to do this, but I can't remeember what it was.
Dwiel
An externally hosted image should be here but it was not working when we last tested it.
If not shorting maybe place a small resistor between them. I have read though that using this method isnt necessarily good for the PSU. I used to have something rigged up to do this, but I can't remeember what it was.
Dwiel
***SAFETY WARNING***
Remember safety first! If you are not certain and do not have the proper materials or tools available, please do not attempt this mod.
Locate the twenty coloured wires terminating into a molex that connects to your motherboard, connect the GREEN wire and any BLACK wire. A switch can be added at this point.
These power supplies are called SWITCHMODE or SWITCHING MODE power supplies and must have a load to function
I would suggest purchasing a 12v 800ma to 1 amp ps from Dick Smith Wallmart or Tandys though to run your fans they are under 20 bucks and nice and small with no modding required
Hope this is of some help tetutigre
Remember safety first! If you are not certain and do not have the proper materials or tools available, please do not attempt this mod.
Locate the twenty coloured wires terminating into a molex that connects to your motherboard, connect the GREEN wire and any BLACK wire. A switch can be added at this point.
These power supplies are called SWITCHMODE or SWITCHING MODE power supplies and must have a load to function
I would suggest purchasing a 12v 800ma to 1 amp ps from Dick Smith Wallmart or Tandys though to run your fans they are under 20 bucks and nice and small with no modding required
Hope this is of some help tetutigre
This PSU is pretty little, about 2''x2''x6''. the ps from walmart are good, but I'm not sure if I could fit 3 in the prjector, or connect them externally, and then gettin a power strip.... but if I can find some cheap ones, I might try that. Could I also power the LCD with this PSU? maybe not.,... the voltage is 7.5v for it.
Thanks for the ideas, tips, and warnings !! Any more I should be aware of?
Thanks for the ideas, tips, and warnings !! Any more I should be aware of?
The RPTV works, IT WORKS, DAMN IT!!! LOL
Lucky day, oh lucky day, lol!
I remembered that it rained yesterday, and I saw a couple of drops of water from it, so i guess it woulnt power on because of some built in protection or someting.
Its so damn bright! Im really considering ripping off the top and projecting at 84 inches onto my silver screen.
The lenticular/fresnel screen is in bad shape, somewhat. It has a big thick rounded scratch going around the whole thing.
Also the mirror is not perfectly aligned (it goes off alignment when you remove the back cover...), so the corner convergence is off.
The sound is quite decent for a tv, 5inch woofers, with smal tweeters ontop (like car speakers). Also you can switch the tv speakers from main stereo sound to make them act as a center speaker. (30 watts nominal, 50 max).
Lucky day, oh lucky day, lol!
I remembered that it rained yesterday, and I saw a couple of drops of water from it, so i guess it woulnt power on because of some built in protection or someting.
Its so damn bright! Im really considering ripping off the top and projecting at 84 inches onto my silver screen.
The lenticular/fresnel screen is in bad shape, somewhat. It has a big thick rounded scratch going around the whole thing.
Also the mirror is not perfectly aligned (it goes off alignment when you remove the back cover...), so the corner convergence is off.
The sound is quite decent for a tv, 5inch woofers, with smal tweeters ontop (like car speakers). Also you can switch the tv speakers from main stereo sound to make them act as a center speaker. (30 watts nominal, 50 max).
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