dwalls32, how strong is your flashlight that you was using for the test? Is the idea of LEDs still possible?
It's a 1,000,000 candle flood light. It is bright, but only in the center of the beam. Outside of that, it gets too dark to cut through the panel. I need a "flat" light...
Oh ic.. do you think it's possible to use car headlights? There are white lights that is extremely bright.
Well, this is where I could use some electronics help. Vince, I bought the same powers upply you did for leds. It's 12v 47 watt. I bought a big halogen car high beam. It's 12 volt, 50 watt. I hooked it up to the power supply and can get light, but it's not bright at all. I'm sure I don't know how to hook it up correctly. Anyone?
light conversions :
1 flame = 43.05564 meter candles
1 foot candle = 10.76391 meter candles
1 lux = 1 meter candles
1 foot candle=0.25 flame
1 flame = 43.05564 meter candles
1 foot candle = 10.76391 meter candles
1 lux = 1 meter candles
1 foot candle=0.25 flame
but then, how does it convert to ANSI Lumens?
About your power supply, I think it just doesn't have enough power. Why don't you try using the computer's power supply, the yellow wire is 12V but I don't k now how much current it has.
About your power supply, I think it just doesn't have enough power. Why don't you try using the computer's power supply, the yellow wire is 12V but I don't k now how much current it has.
Great work dwalls32, now we know it really works!
btw, I just read Popular Mechanics, Oct 2001 issued,
page 117, an ad about flashlight using 4 led's.
They said its beam can be seen from a mile away.
maybe this type of led could work for our project.
Myren,
there was someone who did the same way (ohp and lcd monitor):
http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=69517&highlight=OHP
to cooling down lcd panel,
I saw product demo before, about clear laminated sheet (V-KOOL ?),
They laminate a piece of glass and beamed with very hot lamp
(it'll fry your hand in second), but behind the glass you can't
feel any heat!
dwalls32,
you can't use that power supply, its defenetely not enough power.
rule of thumb you should double the power needed.
why don't you use 12 volt car battery just for trying, before you find the right power supply. (cheap OHP trafo can be use for it)
Don't forget using reflector behind the lamp, its really important to beamed the light.
maybe worth to try 150 watt Xenon bulb type, it's real white light.
btw, I just read Popular Mechanics, Oct 2001 issued,
page 117, an ad about flashlight using 4 led's.
They said its beam can be seen from a mile away.
maybe this type of led could work for our project.
Myren,
there was someone who did the same way (ohp and lcd monitor):
http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=69517&highlight=OHP
to cooling down lcd panel,
I saw product demo before, about clear laminated sheet (V-KOOL ?),
They laminate a piece of glass and beamed with very hot lamp
(it'll fry your hand in second), but behind the glass you can't
feel any heat!
dwalls32,
you can't use that power supply, its defenetely not enough power.
rule of thumb you should double the power needed.
why don't you use 12 volt car battery just for trying, before you find the right power supply. (cheap OHP trafo can be use for it)
Don't forget using reflector behind the lamp, its really important to beamed the light.
maybe worth to try 150 watt Xenon bulb type, it's real white light.
Some People who have made video projectors
http://www.audiovisualizers.com/madlab/lcd_proj.htm
This person has made a video projector and peoples email how also have made them.
http://www.audiovisualizers.com/madlab/lcd_proj.htm
This person has made a video projector and peoples email how also have made them.
I know we said that floods are not the best solution, but here's something for testing.
http://www.allelectronics.com/cgi-bin/category.cgi?category=320&item=HLP-50&type=store
http://www.allelectronics.com/cgi-bin/category.cgi?category=320&item=HLP-50&type=store
Here's the info on V-Kool...
http://www.v-kool-usa.com/
[Edited by dwalls32 on 11-01-2001 at 10:56 AM]
http://www.v-kool-usa.com/
[Edited by dwalls32 on 11-01-2001 at 10:56 AM]
Fiat1, I have no idea what the guy in the link did. Its like take apart a VCR and said it's a DIY rocket to the moon. There are no steps, no nothing.
I'm slightly annoyed that I couldnt find any 1280x1024 res 15 inch LCD's, so I'm probably just going to go out and buy a 1/2 decent 1024x768 LCD. I plan on getting a really good (~7000 lumen) OHP to go with it. Probably get the thing assembled Thanksgiving. Will return with results then.
Myren
Myren
7000? when can you get it? How long would the light last? Are you sure it'll work since investing on a 1280x1024 LCD is quite much. Besure to take some pictures of your project.
I checked, double checked then triple checked the lights life. 1000 hours. Thats four months assuming I manage to somehow spend 8 hours in front of the thing a day.
I'm issuing a standing order now to hunt me down and shoot me if I use it for more than 7 hours a day on average.
I'm issuing a standing order now to hunt me down and shoot me if I use it for more than 7 hours a day on average.
LCD displays
Something to watch out for with desktop lcd panels is that the control board tends to be directly mounted onto the back of the screen as it uses touch contacts, Maybe it would be possible to solder wires between the contacts but on the taxan screen i got it apart enough to try apart
Something to watch out for with desktop lcd panels is that the control board tends to be directly mounted onto the back of the screen as it uses touch contacts, Maybe it would be possible to solder wires between the contacts but on the taxan screen i got it apart enough to try apart
thats actually my greatest fear, having an lcd GLUED to a backlight GLUED to a contact attached circuit board.
I dont suppose anyone happens to know working LCD's that have seperable relatively seperable LCD units?
I think I'm getting a viewsonic vg150. I hope the SOB will open up for me. =] If anyone has one, please please please please <b>please</b> do me a HUGE favor and just unscrew the back of it and gimme a basic status report.
[Edited by Myren on 11-04-2001 at 10:54 PM]
I dont suppose anyone happens to know working LCD's that have seperable relatively seperable LCD units?
I think I'm getting a viewsonic vg150. I hope the SOB will open up for me. =] If anyone has one, please please please please <b>please</b> do me a HUGE favor and just unscrew the back of it and gimme a basic status report.
[Edited by Myren on 11-04-2001 at 10:54 PM]
- Status
- Not open for further replies.