Pictures of your DIY lights - Post your pics!!!

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Shugglet

Well-Known Member
mahiluana said:
The only shitty here is reply by shugglet and @frica -
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See now I can safely assume you do profit off these lights, so now I wont feel bad on calling you out on any bullshit claims you make...

mahiluana said:
You can call me Trump - i call you fucking NAZI - OK. ?
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You cant see the irony here? lol How bout you answer the point I made in my previous post, Ill even restate it for you...

You realize in your comparison you are driving the CXB twice as hard and its still still more efficient... Think that 147lm/w would go up if you ran both at 700ma???

Oh, and please, try to frame me simply as a hater or I dont "believe" LOL Go back through my post history and you will see Im one of the biggest proponents of watercooling on this board.

Im just not a fan of trying to bilk people out of money by using slimy business tactics.

Like the point I was addressing here :
Shugglet said:
You realize in your comparison you are driving the CXB twice as hard and its still still more efficient... Think that 147lm/w would go up if you ran both at 700ma???
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That is simply shady business and you probably fucking know it. Thats why you always ignore it.
 
bullSnot

bullSnot

Well-Known Member
phishguy said:
A few pics of my first cob build. I still have some finishing to do but I've been running it just for testing temps and draw etc. The light is 24"x24"
and it is intended for a 3'x3' tent. The fans are not connected yet because I was an idiot that connected AC to the DC side of the power supply. It appears to not matter that much because at full blast after 3 hours, the hottest heatsink is just at 99 to 101 degrees. Looking forward to my first legal grow!
8x cxm22 at about 55w each
8x arctic alpine 11 plus
2x hlg185-48a
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Do you really have to put a processor fan on each heatsink? Do they give off that much heat? couldn't one fan blowing cross the top be sufficient?
 
iHearAll

iHearAll

Well-Known Member
bullSnot said:
Do you really have to put a processor fan on each heatsink? Do they give off that much heat? couldn't one fan blowing cross the top be sufficient?
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it depends on the heatsink style. the fin style heatsinks would hold heat between the blades if it wasnt quickly forced out. A single fan wouldnt reach all the grooves appropriately and you would result in hot spots and possibly burn out a few chips. if you were using passive heat sinks this would be different
 
bullSnot

bullSnot

Well-Known Member
Mine give off little heat. In fact I put my seeds/rapid rooter in a cup on top the heat sink to sprout. But I am running 6 cobs off 1 240 watt driver
 
Organic Miner

Organic Miner

Well-Known Member
nxsov180db said:
Citizen 1212's, Intel CPU active heat sinks, Meanwell 320's. 16x COB's and 2x Meanwell 320's per 4x4 grid.
View attachment 3935814 View attachment 3935815 View attachment 3935816 View attachment 3935817 View attachment 3935818 View attachment 3935819 View attachment 3935820 View attachment 3935821
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Very nice. I like the detail to neatness by tie wrapping everything. Very clean. Same with your control panel. One question, why didn't you wire the power supplies directly in the power boxes, vs. going to plugs and outlets?
 
bassman999

bassman999

Well-Known Member
bullSnot said:
Mine give off little heat. In fact I put my seeds/rapid rooter in a cup on top the heat sink to sprout. But I am running 6 cobs off 1 240 watt driver
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I have 2 tents, and in my Cree tent I run 2 fixtures in a 2x4 and each fixture is 6 cobs off a 240 watt driver
 
Randomblame

Randomblame

Well-Known Member
nxsov180db said:
I thought everyone always talked about using B series drivers with the dimming leads capped off to get a higher output wattage? This is the only B series driver I have, I figured it was just a fluke that it had much less wattage than any of my A series...
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Nope, this is generally so.
The A-series goes higher than the B-series in terms of maximum performance and the CV series goes over the CC series.
This does not mean that they are worse!
I do not like pure parallel circuitry with COB's for various reasons, even if it works, because with COB's in parallel you always squash the full power out of the driver, which reduces its durability.
Also, you can get other problems, such as thermal runnaways if not all COB's have identical voltages. But this is my personal decision!
You must also not forget the PFC (power factor correction).
A wattmeter can display higher consumption values than is actually drawn. If we say PFC is 95%, your wattage will show 5% more consumption than is actually needed.
And if you run the COB's at the limit of their performance, and one of the COB's falls out, all other COB's must compensate for this, which could lead to further COB's failing.
The only positive thing for me is that a parallel circuit provides a certain fail-safe because it continues when one COB fails.
If one COB fails in a series circuit it is immediately dark!
 
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