finished !!
I just painted my box:
more pictures:
I dont care about the lamp starting before the PC anymore since the PC boots twice as fast as the lamp anyway.
I just painted my box:
more pictures:
I dont care about the lamp starting before the PC anymore since the PC boots twice as fast as the lamp anyway.
Oh....My.....God!!!!
My jaw almost touch the floor looking at your "creation".
You must be having so much fun doing this.... man I wish I have your resources/equipments and space to do all this.
I hope you can borrow a good digital camera to capture a better screen shot.... I really really like to see the real output.
you the MAN!!!! you the MAN!!!
My jaw almost touch the floor looking at your "creation".
You must be having so much fun doing this.... man I wish I have your resources/equipments and space to do all this.
I hope you can borrow a good digital camera to capture a better screen shot.... I really really like to see the real output.
you the MAN!!!! you the MAN!!!
I'm afraid my camera is part of the success...
it masks the crappy paint job (it was my first).
I'll be using it in the dark so it's not a very big problem.
it masks the crappy paint job (it was my first).
I'll be using it in the dark so it's not a very big problem.
the very best
Akeem "the teacher"
The best projector of all those that I have seen, is yours.
You are the best example for all those of the forum
thanks for your help by email
Akeem "the teacher"
The best projector of all those that I have seen, is yours.
You are the best example for all those of the forum
thanks for your help by email
Akeem is there anyway to add a shroud between the lens and the fresnell? This might improve the brightness of your picture.
shroud ??
@dynablaster:
Underneath the skin its just an OHP with an LCD-panel slapped on it and a MH lamp.
My only addition would have been to add the computer to it.
And I placed it just above a 400W heat producing lamp, stupid but "feasable".
@Bertelson:
dont know what exactly you mean with "shroud".
between fresnel and projection lens there are 2 sheets of glass and an LCD.
I also use a smal rectangular "canvas" taped on the backside of the projection lens to reduce the "haze" on the final projected image.
I'll try to take a picture of it in a few days.
Is this what you meant with a "shroud" ?
@dynablaster:
Underneath the skin its just an OHP with an LCD-panel slapped on it and a MH lamp.
My only addition would have been to add the computer to it.
And I placed it just above a 400W heat producing lamp, stupid but "feasable".
@Bertelson:
dont know what exactly you mean with "shroud".
between fresnel and projection lens there are 2 sheets of glass and an LCD.
I also use a smal rectangular "canvas" taped on the backside of the projection lens to reduce the "haze" on the final projected image.
I'll try to take a picture of it in a few days.
Is this what you meant with a "shroud" ?
I think that is what you and I are talking about, a shroud would prevent some of the light escaping between the glass and the lens.
Think of the old cameras, there was that rectangular jagged material that sat in between the lens and the film. When the moved the lens back and forth the rectangles would scruntch together.
Think of the old cameras, there was that rectangular jagged material that sat in between the lens and the film. When the moved the lens back and forth the rectangles would scruntch together.
nope, that's not what I was talking about; I just meant a piece of paper with a rectangular cut-out slapped to the projection lens.
Akeen
Great job, man...I am curious though. What type of bulb are you using and what are its stats? And how did you go about cutting the ladle to fit the bulb?
Great job, man...I am curious though. What type of bulb are you using and what are its stats? And how did you go about cutting the ladle to fit the bulb?
Lamp = 400W MH OSRAM: HQIT400N
I dremeled the ladle, destroyed 5 cutting discs on it because it was inox, and inhaled about half the dust I created.
I dremeled the ladle, destroyed 5 cutting discs on it because it was inox, and inhaled about half the dust I created.
Heya Keem.
Best project ever, I used your as example alrdy for a couple of months now.
Hope you don't mind 😉
Only thing I can't believe you keep your compartiment with the light+ballast+ignitor+all other electronics cool.
+ your mobo has to be heatend up, no ?
Is the 12cm cooler take inside your bow or out ?
Best project ever, I used your as example alrdy for a couple of months now.
Hope you don't mind 😉
Only thing I can't believe you keep your compartiment with the light+ballast+ignitor+all other electronics cool.
+ your mobo has to be heatend up, no ?
Is the 12cm cooler take inside your bow or out ?
@ Akeem & Tekker
Great work on those projects. Now i'm trying to make one too, but it seems there are no plastic fresnels available in Belgium at least not in the vicinity of Antwerp
. Only glass fresnel which costs about €150. Does anyone know where to get one (preferably in Antwerp) or does anyone of you have a spare one?
Anyway keep up the good work!!!!
Great work on those projects. Now i'm trying to make one too, but it seems there are no plastic fresnels available in Belgium at least not in the vicinity of Antwerp
. Only glass fresnel which costs about €150. Does anyone know where to get one (preferably in Antwerp) or does anyone of you have a spare one? Anyway keep up the good work!!!!
Heat, quiet fans
The dust-filters I used here..
..are no good.
This material is often used for packaging computer parts.
When I first started the projector with this stuff temperatures went up fast to 60°C (motherboard) and 80°C (CPU) (measured with integrated hardware monitoring) so I shut it down soon after MBM warned me.
They look pretty, but dont let enough air pass through it, the resistance is too high, a stronger fan could help, but it worked with the white dust-filters, so I'll just search for another black filter with less resistance.
I ripped out the bad filter from the 12cm fan (had to watch big-screen TV&movies).
Now temps are 40° (Motherboard) and 60° (CPU).
The two 6cm fans in the back are running but since they still have the bad filter behind them they don't actually do anything.
Next time I open the box I will disable them.
So the 12cm Pabst fan will be the only fan cooling lamp+ballast+PSU+mobo.
And It's running @8V so It's quiet as well.
In fact I think the ballast is the noisyest part of the machine, it buzzes a little.
You'ld be amazed by the heat displacement from a single 12cm fan @8V with a continuous supply of fresh air (the fan blows towards the reflector BTW).
The aluminium foil underneath the motherboard helps to reflect the radiation from the lamp off course.
There is another fan on the CPU, it's a small 6cm fan @7V.
When I'm using the box to play MP3's (there are amazing possibilities in combination with the wireless keyboard) I don't start the lamp, LCD or 12cm fan, so there's only the noise from the Hard Disk and the 6cm-CPU fan @7V.
The HD is a Seagate Barracuda V.
Maybe you could hear one of those If you put it in a big wooden box to amplify its sound...
I did that but it's still inaudible.
@penlul:
I got my fresnel from a broken OHP, I suggest you search for one of those in schools for example.
If I had a spare one I'ld be building another projector ;-)
The dust-filters I used here..
..are no good.
This material is often used for packaging computer parts.
When I first started the projector with this stuff temperatures went up fast to 60°C (motherboard) and 80°C (CPU) (measured with integrated hardware monitoring) so I shut it down soon after MBM warned me.
They look pretty, but dont let enough air pass through it, the resistance is too high, a stronger fan could help, but it worked with the white dust-filters, so I'll just search for another black filter with less resistance.
I ripped out the bad filter from the 12cm fan (had to watch big-screen TV&movies).
Now temps are 40° (Motherboard) and 60° (CPU).
The two 6cm fans in the back are running but since they still have the bad filter behind them they don't actually do anything.
Next time I open the box I will disable them.
So the 12cm Pabst fan will be the only fan cooling lamp+ballast+PSU+mobo.
And It's running @8V so It's quiet as well.
In fact I think the ballast is the noisyest part of the machine, it buzzes a little.
You'ld be amazed by the heat displacement from a single 12cm fan @8V with a continuous supply of fresh air (the fan blows towards the reflector BTW).
The aluminium foil underneath the motherboard helps to reflect the radiation from the lamp off course.
There is another fan on the CPU, it's a small 6cm fan @7V.
When I'm using the box to play MP3's (there are amazing possibilities in combination with the wireless keyboard) I don't start the lamp, LCD or 12cm fan, so there's only the noise from the Hard Disk and the 6cm-CPU fan @7V.
The HD is a Seagate Barracuda V.
Maybe you could hear one of those If you put it in a big wooden box to amplify its sound...
I did that but it's still inaudible.
@penlul:
I got my fresnel from a broken OHP, I suggest you search for one of those in schools for example.
If I had a spare one I'ld be building another projector ;-)
ok thx for this advanced explaination.
I tested a little bit with a closed carton box (as much you can call it closed hehe) and I used aswell a 12cm fan and you are so right when you have only one turning and provide a continues on fresh air it all stays pretty cool, my bulb is only 10cm of the LCD and it still don't really heat up after 15 minutes.
So when you just place maybe a glass in between the bulb and fresnel it will be all ok.
But I go for another close compartiment to fit in my mobo, so it won't heat up by the bulb.
Need to be dooing allot of work though hehe
One more thing (are more though 😉 ) the barrels were the projection lens is hanging on are they just wood or steel and are they gooing through your whole box?
And if they go through your whole box did you drill holes in your fresnels then ?
It's a genius thing you did it that way, with that your box will be much smaller.
I tested a little bit with a closed carton box (as much you can call it closed hehe) and I used aswell a 12cm fan and you are so right when you have only one turning and provide a continues on fresh air it all stays pretty cool, my bulb is only 10cm of the LCD and it still don't really heat up after 15 minutes.
So when you just place maybe a glass in between the bulb and fresnel it will be all ok.
But I go for another close compartiment to fit in my mobo, so it won't heat up by the bulb.
Need to be dooing allot of work though hehe
One more thing (are more though 😉 ) the barrels were the projection lens is hanging on are they just wood or steel and are they gooing through your whole box?
And if they go through your whole box did you drill holes in your fresnels then ?
It's a genius thing you did it that way, with that your box will be much smaller.
A picture is woth a 1000 words:
Oh, yes I forgot about the 3 4cm LCD-fans , They were quiet @ 12V but they only get 6V from me. They are just for the looks actually ;-)
Oh, yes I forgot about the 3 4cm LCD-fans , They were quiet @ 12V but they only get 6V from me. They are just for the looks actually ;-)
yes it is hehe, can't believe I overlooked that, just need to check the pics more 🙂
Then I wouldn't ask such stupid questions hehe
Then I wouldn't ask such stupid questions hehe
Hey Akeem, I'm curious why you don't use a condensor lens after your light source and before your fresnel lens? Don't you get serious hotspotting without one?
bitbyter said:
Heya I tested now almost with the same setup and the fresnel spread out the light real good.
When I use a condensor lens I get hotspots in the middle or I have to slide the lcd allot more to the front and that makes the case allot bigger but I gonna try and find a bigger condensor lens though.
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