Ok I have been lurking around for i while so i got convedent enough to build a projector. (i think).
I love flee markets so most of the stuff i bought cheap:
70 watt MH lamp (10,- E)
Fans 8 cm (FREE)
240 mm fujion-xerox photocopier lens (10,- E)
3 foil fresnells (f=310mm) (2,09 a piece)
Ordenairy mirror (0,50 E)
Loupe (f=330,) (2,- E)
Condensor from a diaprojector (diameter 7 cm, f~7cm) (FREE)
Lexan sheet 0,5 mm thick (FREE)
I still don't have a lcd, i will first build my beamer and i will then see if I wanna pay 200,- E for a lcd.
So the first steps:
Because i really don't want to burn my appartment down i desided to use special flame retarding rigips (dry wall).
It come's in sheet of 120x60x1 cm. cost ~5 euro.
So i build a box first (50x30x15 cm). I thought it would be big enough. But at the moment
I am going for the 3 fresnel design so cut a aluminium sheet (30x15 cm) and cut out a hole, attached the lexan (30x15 cm) then added two fresnells (rings await from the light) and screwed them in place.
Then i screwed in the lamp and the condensorlens, placed the 2 fresnels in front and turned it on. (gona place a fan (sucking) under the ballast.)
As you can see i still needed some tuning to get even light distribution. It is fixed now.
What you also can see is that i have only a very very small room |(14cm) left for the lcd, mirror and fresnell. So i think i have a problem.
I will stop now for this week (I work at my parends home) next weekend more results.
I love flee markets so most of the stuff i bought cheap:
An externally hosted image should be here but it was not working when we last tested it.
70 watt MH lamp (10,- E)
Fans 8 cm (FREE)
240 mm fujion-xerox photocopier lens (10,- E)
3 foil fresnells (f=310mm) (2,09 a piece)
Ordenairy mirror (0,50 E)
Loupe (f=330,) (2,- E)
Condensor from a diaprojector (diameter 7 cm, f~7cm) (FREE)
Lexan sheet 0,5 mm thick (FREE)
I still don't have a lcd, i will first build my beamer and i will then see if I wanna pay 200,- E for a lcd.
So the first steps:
Because i really don't want to burn my appartment down i desided to use special flame retarding rigips (dry wall).
It come's in sheet of 120x60x1 cm. cost ~5 euro.
So i build a box first (50x30x15 cm). I thought it would be big enough. But at the moment
An externally hosted image should be here but it was not working when we last tested it.
I am going for the 3 fresnel design so cut a aluminium sheet (30x15 cm) and cut out a hole, attached the lexan (30x15 cm) then added two fresnells (rings await from the light) and screwed them in place.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Then i screwed in the lamp and the condensorlens, placed the 2 fresnels in front and turned it on. (gona place a fan (sucking) under the ballast.)
An externally hosted image should be here but it was not working when we last tested it.
As you can see i still needed some tuning to get even light distribution. It is fixed now.
An externally hosted image should be here but it was not working when we last tested it.
What you also can see is that i have only a very very small room |(14cm) left for the lcd, mirror and fresnell. So i think i have a problem.
I will stop now for this week (I work at my parends home) next weekend more results.
Ok a follow up. I still do not have a lcd. :S
I don't have the money to buy the lilliput, so I go for the lower res tft. If it is really bad, then I had a fun learning time 😀
So to see if my projector is capable of projecting i did some tests.
I build in the final foil fresnell and a extra sheet of polycarbonate (1mm).
Sawed a hole in the cabin and put in the projector lens.
Printed a sheet (low res printer) an turned it on.
I placed a sheet (5") as you can see:
The reflection in the mirror (a normal, bad mirror)
And this was the projected result (50"). VERY bright, but ok this is only a sheet. When the lcd is half as bright then still there is no problem.
So my light setup works!!! I hope i have enough space left to place the controller board etc. But ok, then I will just place an extra fresnell gives me 5 cm more.
I am getting more and more exiting!
A quistion: How do you attach the projection lens? It is almost completely out of the box to get a sharp picture.
I don't have the money to buy the lilliput, so I go for the lower res tft. If it is really bad, then I had a fun learning time 😀
So to see if my projector is capable of projecting i did some tests.
I build in the final foil fresnell and a extra sheet of polycarbonate (1mm).
Sawed a hole in the cabin and put in the projector lens.
Printed a sheet (low res printer) an turned it on.
An externally hosted image should be here but it was not working when we last tested it.
I placed a sheet (5") as you can see:
An externally hosted image should be here but it was not working when we last tested it.
The reflection in the mirror (a normal, bad mirror)
An externally hosted image should be here but it was not working when we last tested it.
And this was the projected result (50"). VERY bright, but ok this is only a sheet. When the lcd is half as bright then still there is no problem.
An externally hosted image should be here but it was not working when we last tested it.
So my light setup works!!! I hope i have enough space left to place the controller board etc. But ok, then I will just place an extra fresnell gives me 5 cm more.
I am getting more and more exiting!
A quistion: How do you attach the projection lens? It is almost completely out of the box to get a sharp picture.
I was gonna say that, I haven't watched it, but it is still easy to recognise. The picture is good though for only a printed picture, I wouldn't expect that.
@ the alchemist,
ha, lol. yeah buddy, ur box is too short. i'd advice to put the lens on a plate and tighten it w long,long screws or threads on ur box and wrap something around. so you'll get no interfering light on ur screen.
go on w ur flee-market pj. nice work.
ha, lol. yeah buddy, ur box is too short. i'd advice to put the lens on a plate and tighten it w long,long screws or threads on ur box and wrap something around. so you'll get no interfering light on ur screen.
go on w ur flee-market pj. nice work.
Thanx guys. it is not from the movie ....g-sting, but i like the title, maybe i rent it some time 😀. It is a wall paper from me, made in photoshop.
This projector is my first and i am already quite pleased with the result. I build my own big slide projector lol. The lens is ~2 mm in the hole in my box so maybe a big tube will also do the trick. I will keep you posted. I maybe found a very cheap, low res, lcd screen for testing (15 euro).
This projector is my first and i am already quite pleased with the result. I build my own big slide projector lol. The lens is ~2 mm in the hole in my box so maybe a big tube will also do the trick. I will keep you posted. I maybe found a very cheap, low res, lcd screen for testing (15 euro).
It works!!!
Ok it has been a while. I have been to couple of fleemarkets and bought an LCD (innovation, 20 euro) and some thin mirror
and a photoframe for that mirror. So i finally could go on.
I forgott to get a picture before i teared appart the lcd so sorry about that.
So this is the scrap of plastic left after stripping. I marked everything so i can rebuild it easy. Everything was connected by those little clips so removal was easy.
Pfew, it still works. You can see that it is low res. PIXELS
Removing te backlight was also easy. I desoldered it from the board and popped it of. In the picture you can see that this lcd has a nice ribon cable for easy handling 😀.
I then attached everything at 90 degress so it can fit into my projector.
In my projector without mirror.
In my projector with mirror.
Pictures of my projection (the pictures of the projection are really bad, the projection is very ok": Sharp; bright ) I will take more next week. I work on my beamer at my parends place and i come there only once a week.
Movie taken with my cam so no good at all:
http://members.lycos.nl/pietphotos/M4100129.AVI
So i have to install some fans and the final powersupply and give it a final tweak. Maybe finished next week!!
I have only one problem: The projector projects downwards. At 9 feet distance about 10 inches. What can be the problem? Tips?
Ok it has been a while. I have been to couple of fleemarkets and bought an LCD (innovation, 20 euro) and some thin mirror
and a photoframe for that mirror. So i finally could go on.
I forgott to get a picture before i teared appart the lcd so sorry about that.
So this is the scrap of plastic left after stripping. I marked everything so i can rebuild it easy. Everything was connected by those little clips so removal was easy.
An externally hosted image should be here but it was not working when we last tested it.
Pfew, it still works. You can see that it is low res. PIXELS
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Removing te backlight was also easy. I desoldered it from the board and popped it of. In the picture you can see that this lcd has a nice ribon cable for easy handling 😀.
An externally hosted image should be here but it was not working when we last tested it.
I then attached everything at 90 degress so it can fit into my projector.
An externally hosted image should be here but it was not working when we last tested it.
In my projector without mirror.
An externally hosted image should be here but it was not working when we last tested it.
In my projector with mirror.
An externally hosted image should be here but it was not working when we last tested it.
Pictures of my projection (the pictures of the projection are really bad, the projection is very ok": Sharp; bright ) I will take more next week. I work on my beamer at my parends place and i come there only once a week.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Movie taken with my cam so no good at all:
http://members.lycos.nl/pietphotos/M4100129.AVI
So i have to install some fans and the final powersupply and give it a final tweak. Maybe finished next week!!
I have only one problem: The projector projects downwards. At 9 feet distance about 10 inches. What can be the problem? Tips?
I finished the project and I am quite pleased. It is quite bright, but i will see if i can enhace it a little more.
Look at http://www.diyaudio.com/forums/showthread.php?postid=364410#post364410
for final pics.
Look at http://www.diyaudio.com/forums/showthread.php?postid=364410#post364410
for final pics.
I can't believe you built a funtioning video projector for 50euro Alchemist, that's amazing! 😎
My panel was meant to arrive today, so hopefully I'll get it tomorrow (hope i havent been the subject of an ebay ripoff
) Hope it works out well for me too 🙂
Nice project, and again I'm amazed you managed it on such a low budget, well done!
My panel was meant to arrive today, so hopefully I'll get it tomorrow (hope i havent been the subject of an ebay ripoff
) Hope it works out well for me too 🙂Nice project, and again I'm amazed you managed it on such a low budget, well done!
thanx... But my resolution is low. So I am already looking for a beter lamp and a beter panel. Fleemarkets you got to love them. Bought a overhead last week for 5 euro 😀.
I have more pics:
The pics are not as nice as the other ones, but they will do 😀
I painted my projector and used silicon KIT to get it light tight.
I added a air grill (which leaks a lot of light :S). So pics of my final projector:
Now some more pics of some projections:
I watched starwars last night (80") and that was nice. That i have to watch movies in darkness bugs me a little, so i want to see if i can upgrade to 150W HQI. If i can find one cheap 😀.
I have more pics:
The pics are not as nice as the other ones, but they will do 😀
I painted my projector and used silicon KIT to get it light tight.
I added a air grill (which leaks a lot of light :S). So pics of my final projector:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Now some more pics of some projections:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
I watched starwars last night (80") and that was nice. That i have to watch movies in darkness bugs me a little, so i want to see if i can upgrade to 150W HQI. If i can find one cheap 😀.
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