| wuffwaff |
Hi,
I think everyone who uses those newer blue leds has experienced the nice colour during the day and the somewhat high intensity at night.:cool:
Wouldn´t it be nice if it (the led) would change it´s intensity according to the available light?
Does anybody have an idea how this could be done (LDR etc.) in a simple way?
William |
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| ShiFtY |
Those blue leds are very directional... just angle it so it is not shining at you and you should be ok... Otherwise a LDR might work but there is the hassle factor.
I like my blue LED!!! |
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| wuffwaff |
shifty,
I asked this question to avoid the hassle incase somebody allready has done something like this:)
Changing the direction won´t help a lot cause the whole room in kind of blue right now!
william |
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| Jason |
I have the same problem.
I use a bit of blutac to cover it up, or combine with some paper to dim.
Blutac gets pretty runny after a while of sitting on a on a big class A. |
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| MRehorst |
You could drive the LED with a current source that uses a photocell to vary the drive to the LED. In bright light it can be made to shine brightly and in darkness, it can be made dim. You'll have to put the photocell somewhere that it can see the room light level (front panel?).
Lots of el cheapo night lights do this...
MR |
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| phishead8 |
An old TV of mine would do the same thing that you mentioned. It worked like a charm. I don't know why TVs stopped using that feature.
-Dan |
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| wuffwaff |
thank you all,
for the replies, they confirm what I already figured out but what I would really like is an answer like:
"buy this ldr, use a bc547 a 30VA trannie and 1k, connect them like this and it will work ":)
This thread was opened because I really don´t have time at the moment (or because I´m too lazy) to fiddle around with different types of ldr´s and do a lot of experimenting :D
william |
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| Peter Daniel |
| quote: | Originally posted by wuffwaff
"buy this ldr, use a bc547 a 30VA trannie and 1k, connect them like this and it will work ":)
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How about a switch to turn them off for a night? Simple and practical solution.;) |
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| tiroth |
| Or a dimmer switch with a larger series resistor. |
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| Tomo |
Hey,
I got ... use to it. Living in city all my life, I can sleep in day light and have REM sleep. ... hehe.
I face LED inward and use indirect illumination. Use like white strip of paper or tape.
You can cut off the top of LED and sand it real well. Make that translucent. I think it would look more professional. BLED is a tad too bright anyways.
Tomo |
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| Electro |
I switched my power LED from my computer and used a blue LED from Radio Shack. Whenever I turn my computer on at night, I can easily walk over to the lamp to turn it on. Also the blue LED is bright enough to diffuse other LEDs in my computer. The hard drive LED light has a tint of purple color then diffused to red-pink in the middle. The one piece clear plastic for all the LEDs makes a bright color to be diffused to other LED outputs.
If you don't want to use a bright color to diffuse other LED outputs. Then you can use electrical tape or duct tape. You can also use a T-shirt to cover the bright LED. Got to help Jason with his t-shirt plan.:D |
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| Lisandro_P |
| I love the eerie blue of those high intensity blue led :) At dark, yeah, they light up a circular spot on the other side of the room, but i just love the way it looks. |
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| JasonL |
i think my ultraviolet leds will look better..
(they have the exact effect as a black light but are leds's )
Jason |
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| Peter Daniel |
| I think my light would look even better.;) |
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| JasonL |
| HAHAHAHAHAHHAHAh nooooooooooooooooooooooooooo MINE IS BETTER.. : O ) |
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| roddyama |
Jason,
That would be great. I could break out the old Jimmy Hendrix and Peter Max posters.:cool:
Eh,... Sorry, another flashback.
Rodd Yamas***a |
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| JasonL |
Yeah that would look awsome
then yu can see all the lint balls on your floor at night hehe |
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| Tomo |
Peter,
That is looks very nice. How did you pull that off?
Heh, I tied my blue LED to my rectifier bridge because I am lazy. It "happens" that the bridge is at center of chasis to illuminate my internals of "holely" chasis.
:)
Tomo |
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| Lisandro_P |
| Speaking of the devil, is a blue led what lights the power meters on the Pass X series? I'd love to give my vu-meters that look... |
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| Neutron Bob |
| The blue glow of the Pass Amplifiers is caused by escaping neutrons leaving the core! And you guys thought that was an LED? |
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| Lisandro_P |
| :eek: Ooooooooooooooooooooooooooooooooooooh! |
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| ShiFtY |
| quote: | | The blue glow of the Pass Amplifiers is caused by escaping neutrons leaving the core! And you guys thought that was an LED? |
LOL!!!!! |
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| Peter Daniel |
| It looks like practical solution wasn't presented here yet regarding strong light from blue LED. I just came across so called light tubes which are used to channel the light from leds in various electronic devices. One could use such tube in stereo equpment and place the LED directly behind the tube on the inside. The tube can be cut shorter and the LED attached with a heat shrink tubing. The effective light is nice diffused blue color without the eye blinding effect.;) |
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| mrgreg2u |
| what about putting two different size resistors on a high-low switch? just a thought!:D |
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| mrgreg2u |
| hey peter - you didn't say where you found those difusser tubes? they look pretty kool :bigeyes: |
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| AudioFreak |
| If I remember correctly, Farnell sells a nice range of light tubes etc. |
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| jh6you |
Even though I like the blue light too, if I see it continuously, I might start to get kind of boredom. Even though one song is very good and big hit, if I listen to it continuously, I always start to get the boredom. Therefore, I am thinking of installation of three different colour LEDs: blue, red and green. So, I could switch among them, according to my current mood. It could be more exciting. O…? Extravagant…!?!?
JH |
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| Lisandro_P |
| What about a bi-color led, with a circuit that mixes their intensity depending on the music? From red to green to yellow and back :) That'd be nice... |
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| jh6you |
Why not...?
Blue for Blues and Jazz.
Red for Har Metal Rock.
Green for Classical.
!?!? |
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| Sud |
Most high intensity LEDs use the packaging to act as a lens and focus the light into a very narrow beam.
What I did to reduce the 'blindness' factor is sandpaper the outside of the housing so it has a frosted appearance. I also used the sandpaper to flatten the 'point' at the tip of the LED packaging to reduce the lens effect.
Upshot: the light from the LED is a nice diffused blue, and is much less annoying at night. With the amps off, the LEDs look like frosted glass :)
Sud |
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| wuffwaff |
hello Herm,
I´ve bought an LDR a while ago wich I will place in parallel to a suitable resistor. The LDR has 300 ohms in daylight and >>1M during the night. I´ll report when something usefull came out.
william |
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