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

sanjuan

sanjuan

Well-Known Member
An adapter plate allows the smallest Mean Well HBG to drive a CXB3590. The Giga is drilled (and tapped) for the 3050/3070 series also but I wouldn't be surprised if the smaller COBs performed as well or better on the Mega 100mm due to lower mass of its central core.

HBG-60 Adapter to Giga.jpg
 
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Humanrob

Humanrob

Well-Known Member
Atticde said:
I guess the one passive cooled it 2.0? I'm thinking of building my fixture like your 1.0, where do you see the improvement then?
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My first build was a 1.0, if/when I build another, it will be a 2.0 design. It costs significantly more, but beyond efficiency there is also an elegance and simplicity to them, specifically without all of the individual fans. Less wiring, less moving parts to possibly fail, less things to plug in... It's just cleaner, especially when you have a larger unit with more COBs. Biz's second light would have 10 individual heat sinks each with its own fan if it were built like the first one, that's a lot of fans.
 
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PurpleBuz

Well-Known Member
Humanrob said:
My first build was a 1.0, if/when I build another, it will be a 2.0 design. It costs significantly more, but beyond efficiency there is also an elegance and simplicity to them, specifically without all of the individual fans. Less wiring, less moving parts to possibly fail, less things to plug in... It's just cleaner, especially when you have a larger unit with more COBs. Biz's second light would have 10 individual heat sinks each with its own fan if it were built like the first one, that's a lot of fans.
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did you know that an active cooled design can run more electrically efficiently than a 100% passive design and also be cheaper to build ?
 
Humanrob

Humanrob

Well-Known Member
PurpleBuz said:
did you know that an active cooled design can run more electrically efficiently than a 100% passive design and also be cheaper to build ?
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LOL... no, I did not know that. Knowledge is a funny thing, I've only gained what I've read so far, and I have not read that before. I am aware that the actively cooled would be cheaper to build, but I had not heard it could be more electrically efficient. I suppose since the 3590's are run softer to keep them within the passive heat output range, and you need to use more of them, somewhere in the math fewer 3070's run in a sweet spot of efficiency could net the same light for less watts?
 
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PurpleBuz

Well-Known Member
Humanrob said:
LOL... no, I did not know that. Knowledge is a funny thing, I've only gained what I've read so far, and I have not read that before. I am aware that the actively cooled would be cheaper to build, but I had not heard it could be more electrically efficient. I suppose since the 3590's are run softer to keep them within the passive heat output range, and you need to use more of them, somewhere in the math fewer 3070's run in a sweet spot of efficiency could net the same light for less watts?
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Primary reason is it only takes a small amount of air movement to significantly increase the cooling capacity of a heatsink.
Large passive heatsink cost is significant.
 
CaliWorthington

CaliWorthington

Well-Known Member
@bizfactory Really nice 2.0 build. It looks like there is a second dimmer box in the back. Are you running the COBs on two strings from the driver and is that why 2 dimmers are necessary?
Also, is that a sheet of aluminum between the two heatsinks that the driver and power/dimmer boxes are mounted on? What thickness, etc...? Thanks.
 
bizfactory

bizfactory

Well-Known Member
CaliWorthington said:
@bizfactory Really nice 2.0 build. It looks like there is a second dimmer box in the back. Are you running the COBs on two strings from the driver and is that why 2 dimmers are necessary?
Also, is that a sheet of aluminum between the two heatsinks that the driver and power/dimmer boxes are mounted on? What thickness, etc...? Thanks.
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Check out the pics here. One box has the power input and the other one has a potentiometer and the pass through outlet. The COBs are wired in series and just one pot (dimmer). I don't know the thickness of the aluminum sheet, my buddy that built it with me picked it up.
 
Airwalker16

Airwalker16

Well-Known Member
BuddyColas said:
So Airwalker16, the real question is, is the end of the heatsink with the "lighted" fan warmer or cooler than the other end with the "un-lighted" fan?
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They're tiny little leds. They don't put off any noticeable heat whatsoever. And if they did, it'd be instantly sucked away by the fans anyways. I was gonna get 2 more Nexus fans to match but the price increased from 5.99 to 9.99 so I said f that, and went with those cheaper rosewills for 4.99 & it's all good. Everything turns off when the timer flips.
 
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