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Old 09-20-2012, 03:23 PM   #11
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All this sound genius. Wish I was I knew how to do that stuff. Can led light grow plants. Anyone know yet?
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Old 09-21-2012, 04:28 AM   #12
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I'm looking into doing this for my tank in the near future. debating on 10 3w Leds ranging from 6k -12k, or 4-6 10w Leds ranging from 6k to 12k. Still doing some research on drivers thinking I may want to go for one that has a dimmer.

And yes Leds can and will grow plants, based on all the led grow light vids I've seen on youtube I'd say it's getting to be very popular with a certain underground farming culture.... I'll leave it at that...
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Old 09-22-2012, 05:31 PM   #13
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You should look into the CAT4101 drive IC.
$2 a pcs, can be PWM dimmed, can drive 6-7 3w led up to 1amp, only one external components required.
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Old 09-23-2012, 12:18 AM   #14
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Quote:
Originally Posted by dezso View Post
You should look into the [URL="http://www.onsemi.com/pub/Collateral/CAT4101-D.PDF"/]"CAT4101" drive IC.
$2 a pcs, can be PWM dimmed, can drive 6-7 3w led up to 1amp, only one external components required.
Thanks for the info while I can understand some of this diagram I'm not to up to snuff on my electronics I'll have to find someone I know who is much better at this stuff then I am to explain this in more detail (simplified terms).

I found a few kits on ebay that can tun a max of 7 3 watt leds complete with driver unfortunately they cannot be dimmed
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Old 09-24-2012, 01:25 AM   #15
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I have made a prototype ~last week and a Chinese company making for me 10x dual layer version, with better heat dissipation, one board have 5 channel. Total cost including header, pot, IC, PCB, under $15, again like most other item from China it will arrive in about 2-3 week.... There is a no win-win situation, as soon as I upgrade to faster shipping, like DHL or FedEX the cost will triple..grrr
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Old 09-24-2012, 02:20 AM   #16
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I used to order a lot of parts from Hong Kong so I'm very familiar with the shipping times.

I'm still looking at getting one of the kits I saw on ebay 8 3w leds on one driver for around 30$. just wondering if it will be enough light for a planted tank, Since I haven't played with anything higher then a 1 watt led and that was years ago Not quite sure how much light I can reasonably expect to get from that kit, or if I would need 2 or more to achieve the light levels I need to grow plants in a 55g tank.
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Old 09-24-2012, 08:26 PM   #17
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My head hurts trying to keep up with these terms and abbreviations. Where can I get started learning about building lights and other electronic equipment? I've always wanted to know how my equipment works and how I can build my own or upgrade what I have.
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Old 09-27-2012, 02:03 PM   #18
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Progress report.

Module one partially assembled, this is 3 royal blue out of 12.
iPhone goes blind above 50% brightness.
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Old 09-28-2012, 03:03 AM   #19
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I will have to rethink this wire cover but going to be ok.


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Old 09-28-2012, 06:26 PM   #20
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That looks so nice it's hard to believe it's DIY!
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