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Old 05-31-2011, 03:43 AM   #31
FDNY911
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Oh I totally don't under estimate those bad boys are, I'm one step ahead. I designed the housing to actually overlap the leds by about 5 inches on all four sides. Only way you'll directly see the LED's is if you sit real low as close to the glass as you can. My biggest worry was the light spilling out but I think I took care of it with the overlapping lip. Should come out nice. I'm thinking a mixture of wood frame and the actual fixture in a sheet metal with perhaps a plexiglass splash guard.
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Old 05-31-2011, 05:03 AM   #32
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You are on the right track then. Have you received the LEDs yet? I'm still waiting for mine from ledgroupbuy.
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Old 05-31-2011, 06:49 AM   #33
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I actually haven't even ordered them yet. I see theres about 18 days left till the next order, not sure how it works, can I still jump on a group buy now or do I have to wait till the timer goes down. Either way I wanted to make sure with the amount of money I was spending that I actually get everything that I need. Tomorrow I will be ordering the Drivers, PMW, Heatsinks and Thermal glue. Im totally excited.
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Old 05-31-2011, 05:38 PM   #34
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As I understand it, all orders that get there before that "next order" date are included in the order. But, I may be wrong.
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Old 05-31-2011, 05:54 PM   #35
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I'm getting set to finish up my fixture this week and during connection/function testing, I noticed that the DDC-01 only dims my ELN-60-48P down to about 15% brightness minimum. 60 watts of LED running at 15% is still pretty darn bright.

FYI...

I've also got some ELN-30-27D and 48D models that I'm getting set to test with the pots I finished wiring this weekend... I'm curious if the DDC will dim the D drivers and how low I can dim them with either the pots or DDC before the driver clips out.
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Old 05-31-2011, 06:23 PM   #36
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Quote:
Originally Posted by cggorman View Post
I'm getting set to finish up my fixture this week and during connection/function testing, I noticed that the DDC-01 only dims my ELN-60-48P down to about 15% brightness minimum. 60 watts of LED running at 15% is still pretty darn bright.

FYI...

I've also got some ELN-30-27D and 48D models that I'm getting set to test with the pots I finished wiring this weekend... I'm curious if the DDC will dim the D drivers and how low I can dim them with either the pots or DDC before the driver clips out.
I'm hoping do only fire up 1 or 2 drivers at a time to keep it as dim as possible and once the brightness increase, add in the other drivers. I don't know it your controller can do that, I'm using an arduino. With this technique I should be able to have a yellow glow at first as well, as ill turn on the neutral whites first and being the blues in towards full sun.
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Old 05-31-2011, 06:35 PM   #37
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I don't know the first thing about programming or I would have gone Arduino. May still jump on that train since DDC won't get me the sunrise and sunset I want.
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Old 05-31-2011, 07:14 PM   #38
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Hoppy from what I understand, the way it works is when that timer ends (18 days left), 19-20 days from that point is when we receive everything. So basically we have 18 days to put in the order and then we have to wait about 20 more days for the LED's to arrive. I'm glad I'm not in a rush. I'm saving like 3 dollars each on the Royal Blues which saves me a lot.
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Old 05-31-2011, 08:26 PM   #39
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http://www.ledgroupbuy.com/pages/How-it-works.html But, because the XL-M is a very new model, it is taking longer than usual. And, at about 20 days after the order date is when ledgroupbuy ships out the individual orders, so it can take a few days longer to actually receive them. (I finally read all of the explanations on the website.)
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Old 06-01-2011, 02:49 AM   #40
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Hoppy do you think my set up is crappy, good enough or great? Would you change anything?
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Old 06-01-2011, 05:32 AM   #41
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The best thing we are both doing is using dimmable drivers, so if we overshoot on the LEDs we can still dim them enough to get good light. My layout is something I think will work, hope will work, but am not at all sure will work as well as I hope. Yours fits that same category. Until I can get some good PAR data with my layout I can't really guess how good someone else's will be.

I keep thinking I'm almost there, when it comes to being able to figure out how much light a LED layout will give, but adding optics just makes it ten times as difficult to be at all sure. One thing I do know - after I get mine completed and tested I will be better off than now. Then, of course Cree will come up with something so much better that the learning curve will have to start all over again.
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Old 06-01-2011, 06:11 AM   #42
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Thanks Hoppy, thats good enough for me to green light myself lol.

I am ordering the PWM, four 48P drivers and three 1.1x48 in Heatsinks from rapid right now.
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Old 06-01-2011, 06:14 AM   #43
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Wow Done! 352.00. Yikes lol. Thats only half, no LED's yet. Thats 364.00!
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Old 06-02-2011, 12:48 AM   #44
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This was awesome! good job
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Old 06-02-2011, 09:04 PM   #45
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Thanks koko. I'm pretty excited !
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