Recent content by itsdonny

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    Need Help Choosing LED Drivers

    Hi, I'm designing a couple of different portable LED lighting systems (Li-Ion powered 18650 batteries) and I am searching for a manufacturer for the LED drivers. Below I have listed the specs of the different parts of the system. I need some ideas on which LED drivers would be best suited for...
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    Cree XQ-B and XQ-D LEDs

    Thanks, Semiman. I'll work on a solution and let you know the outcome if you're interested.
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    Making Your Own RGBW LED From Individual LEDs

    Strange, I replied to this thread and it didn't go through. Anyhow, I didn't realize the efficiency was so low when you mix colors with an optic. Perhaps the XM-L would be a better choice even though it costs more.
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    Cree XQ-B and XQ-D LEDs

    Thanks, bshanahan14rulz. I found this video that shows their brightness and I unfortunately they aren't bright enough. Also for this part of the project they do have to be white LEDs Thank you for your input though! SemiMan, yes I am planning on making thousands of these so I'm trying to keep...
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    Making Your Own RGBW LED From Individual LEDs

    Thanks guys for the input and links! I did find the polymer optic: http://www.polymer-optics.co.uk/Luxeon%20Colour%20Mixer%20Range.pdf By their photos it seems to do a pretty decent job. It may be worth experimenting with if I go that path. I found the khatod color mixing optics too. Here...
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    Cree XQ-B and XQ-D LEDs

    Thank you, Semiman. What I'm trying to do is illuminate a object from different angles and different distances. The distance ranges from 1-2.5 feet. For testing I've been using some LEDs that are apparently emitting about 80lm. These are going through a typical 90° 20mm optic. I am happy...
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    Cree XQ-B and XQ-D LEDs

    I have a battery powered project that I'm working on that involves using some LEDs around the 0.5 watt area. I really like the new XQ-B and D LEDs but they aren't directional. Can I effectively get around this with an optic? I was also thinking of using the ML-E but for production I like the...
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    Making Your Own RGBW LED From Individual LEDs

    I can't find a bright enough RGBW LED for a project I'm working on, aside from the fact that they're expensive, so I was thinking to use 3 Cree XB-D Red, Green and Blue LEDs and then either a white XB-D LED or something brighter for the white. (I'm open to suggestions). If I put the 4 LEDs...
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    Low Cost Alternatives To Name Brand LEDs

    Thanks for the replies. Yeah I should have posted this in the LED section. Oh well. I purchased some on alibaba at $.70 each with star heat sink made by Guangmai. Unfortunately I'm not allowed to post the link here, but they seem good. They run super cool, I'm just not sure they're putting...
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    Incredible Light Painting

    Wow, really cool stuff.
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    Thinking of getting a new compact camera...

    I know this is an old thread but I would get the Canon G1x. Really amazing for a P&S camera!
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    Low Cost Alternatives To Name Brand LEDs

    I'm wondering if some of you can give me some low cost white LED alternatives to the major name brands that have good efficacy. Color is not super critical as long as they are fairly white. I'm wanting to get something in the range of 1-3 watts. I've been looking on alibaba.com but it's hard...
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