[linky]

About a week or two ago I built a 10 vero 29 cob fixture and powered them at 100 watts each to replace a 1000 watt hps se fixture over a 4 x 4.

I have a couple 12 Cree cxb3590 cobs fixtures right now that I was powering at 50 watts each (600 watts total) and it does awesome. But I wanted them to light up a little more so I replaced the drivers in them with meanwell hlg 240 1750b's to run them at ~62.5 watts each instead.. so that left me with 6 of the mean well 1400b drivers.

I had already just finished replacing my veg and mother lights (MH and t5 fixtures) with cobs fixtures I built so I needed something to do with the 6 now unused drivers.

I stole the layout from growmau5's canopy 10 build, mine is a much more basic version of that though. I did a 10 cob Vero 29 gen 7 C's (~68 volts each,they are the most efficient Vero 29 Gen 7;s you can get, by about 15% or more efficient that B's and D's) 3000k 80 cri and 3000k 90 cri mix and powered them with my old drivers at 100 watts each.. figured that would be fun to do..

After it was build I was so impressed with the output and how amazing it completely covered with deep penetration a 4 x 4 I decided to build two more!

I have apogee par sensor, was getting 900 or better ppfd all over the canopy at 24" and 1300+ at 12". After these lights are built I am going to hang one and put a 4 x 4 grid on the floor and measure many different points to get more accurate results. I have a apogee 120 sensor, and that does give lower than accurate results with LED's, so the numbers are actually quite a bit higher.. I may order a apogee 500 so I can get accurate measurements but they cost like 500 bucks.. ouch

Anyway, here are some photos of the last build and here are photos of the parts that just came for the new builds.

[linky]

Parts for new builds Doing it in black 8020 this time.

[linky]

[Chevy cHaze]

Nice one !
I'm pulling up a chair.

Good goings,

CC

[majorana]

What's that between the bottom two heatsinks, a potentiometer for the whole thing? And what material did you use for the frame? Also: why the fan on the pin heatsink, rather than simply a bigger heatsink..?

As for the efficiency of Vero29 gen C/B/D, you're entirely correct for the power you're driving them at. In different configurations that's not necessarily the case. The Bridgelux product simulator does a better job than me showing the numbers, and I suggest anyone thinking of a build take a look at that.

I might sound critical, but that's just because I'm jealous: it's a beautiful build, respect!

[linky]

Originally Posted by majorana

What's that between the bottom two heatsinks, a potentiometer for the whole thing? And what material did you use for the frame? Also: why the fan on the pin heatsink, rather than simply a bigger heatsink..?

As for the efficiency of Vero29 gen C/B/D, you're entirely correct for the power you're driving them at. In different configurations that's not necessarily the case. The Bridgelux product simulator does a better job than me showing the numbers, and I suggest anyone thinking of a build take a look at that.

I might sound critical, but that's just because I'm jealous: it's a beautiful build, respect!

That is the 12v dc power supply for the fans between the lower two heat sinks.

I would have went with a larger heat sink but could not find one in stock anywhere that would do 100 watts passively. I am sure these (133mm)heat sinks will keep them cool enough to not burn up the cob if one of the fans fail.. they are currently at 105F with the fan on at its hottest point.

They are at 120F on my fixtures with these heat sinks and vero 29's at 75 watts passively, so sure it would be okay at 100 watts. I have good air flow/movement in my room as well which helps.

This is 8020, the frame. 8020.net or tnutz.com, awesome stuff.

[linky]

Got the frame built for both of the two new lights, here is the first one cut and put together.




work area

[Phychotron]

Awesome, i've been working my way up to larger lights of this nature. What's the estimated cost for this thing?

[linky]

Originally Posted by Phychotron

Awesome, i've been working my way up to larger lights of this nature. What's the estimated cost for this thing?

They are approx 1000 each in parts.

Ill do a parts list/links

[linky]

5 of these Vero 29 Gen 7's C's 3000k 80 CRI - $30.28 each

https://www.digikey.com/product-deta...398-ND/6152408

5 of these Vero 29 Gen 7's C's 3000k 90 CRI - $31.90 each

https://www.digikey.com/product-deta...-72-ND/6181453

5 of these HLG-185H-C1400B drivers - $54.72 each

https://www.mouser.com/Search/Product...HLG185H-C1400B

10 of these LEDIL ANGELINA Series 1 92° Round White Reflector - $3.49 each

https://www.futureelectronics.com/en/...IL8043516&IM=0

10 of these LEDIL Round Base Clamp For Bridgelux Vero Series Reflector - $0.68 each

https://www.futureelectronics.com/en/...IL1034959&IM=0

3 of these Black Anodized 8020 series 10 96" extrusions - $23.50 each

https://www.tnutz.com/product/ex-1010...ength=96-inche

4 of these 8020 Black Anodized Corner Brackets - $3.60 each

https://www.tnutz.com/product/cb-010-...corner-gusset/

12 of these 8020 Black Anodized Corner Brackets - $2.00

https://www.tnutz.com/product/cb-010-...corner-gusset/

I ordered 100 of these (per light) (more than enough) T Nuts and Screws $0.19 each

https://www.tnutz.com/product/economy-t-nut-screw/

10 of these 133mm Heat Sinks - $16.00 each

https://northerngrowlights.com/colle...ssive-heatsink

5 of these Single Linear Potentiometer Pot, 100K 10 pack $7.96

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

wire for cobs $14.99

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Power supply for fans $17.98

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

used 18 gauge speaker wire for fans ~$3.00

$957.42 Total for each light.

Sure there is misc other things but that is most or all of it I think.

Ohh I did forget 3/4" aluminum angle iron 1/8" thickness I am using to mount the heat sinks, need approx ~20' for each light. Since I am doing black this time I went out and bought some aluminum etching primer and flat black paint for it a well. ~$50 bucks total I would say.. I order my angle iron from metalsdepot.com

https://www.metalsdepot.com/products...cc=%20&aident= 3/4 x 3/4 x 1/8 16' long, $13.76 each.


Also I did not include shipping in all this, guess approx $80-100 in shipping total