2nd Build-DIY COB with Vero 29's x 6

Roasty McToasty · Mar 19, 2016

Gathering materials for my second build. Looks like 4 purchases will be necessary. This build will replace a 600w hps thats in a 5x5 tent. No where near enough light for that space. Build 1 was to supplement the hps, however I love it so much I decided to replace the hps with more led. After all is said and done, build 1 and build 2 will light the 5x5 space at 750 watts maxed out. Plan to dim at first till i get them dialed in. I feel 600w led should give lots more PAR and coverage than the 600w hps. We will see.

Parts list:
Newark.com (6) Vero 29 3500k 80cri; (6) Pico EZ-mate connectors. $170
Mouser.com (2) hlg-240h-c2100b; (2) apv-12-12. $160
Amazon.com (6) arctic alpine 64 plus; thermal grease. $95
Home Depot for frame and mounting/hanging hardware. $???

I'm guessing around $450 total cost. Already have the chips and connectors. Still need to order from amazon and mouser. Drivers won't be in stock till 3/25 so in no hurry.

Plan to run (3) 250w drivers at 200w a piece, for 600w total. If needed I'll give em everthing the drivers got.

So I'm hoping 10 high power cobs will be enough for my 5x5. Any input appreciated.

Peace, Roast.

Roasty McToasty · Mar 26, 2016

Parts ordered. Should have everything by next weekend to build. Decided to make 2, 3 Cob lights. Will use aluminum L bar for frame with drivers and heatsinks attached. Will try to post the process to help others to DIY. :tiphat:

Peace, Roast.

FranJan · Mar 26, 2016

You do know new Veros are coming in June? Not trying to piss on your project but you may want to hold off on purchasing those V29s, though I guess the decision if it's worth the bump in performance and features is up to you. Just thought I'd mention that.

http://www.bridgelux.com/resources/bridgelux-announces-market-leading-efficacy-cob-offering-155-lumens-watt-performance
"Next generation Vero and V Series arrays will ship in June"

Roasty McToasty · Mar 26, 2016

Did not know. Thanks for the info.

Peace, Roast.

jikko77 · Mar 26, 2016

any idea on how to place the led on that 5*5 space?
lurking around to see what design it will have

Roasty McToasty · Mar 26, 2016

jikko77 said:
any idea on how to place the led on that 5*5 space?
lurking around to see what design it will have

Plan to center build 1 (4 Cree cxb3590's) and put 3 vero's on each side of that. Hope to have about 1 foot spacing between COB's. If more are needed, I will add more. It's fun to build these rigs.

Peace, Roast.

Roasty McToasty · Mar 26, 2016

Some pics of first build. 4 CXB3590 (36v)CB bin. Mean Well HLG-240H-C1750B driver. Some sheet metal found in waste bin at jobsite is the frame. Arctic 64 plus coolers.

Peace, Roast.

Firebrand · Mar 31, 2016

Nice build, sweet, simple, clean and efficient, a good example of DIY. :good:

Roasty McToasty · Apr 2, 2016

Firebrand said:
Nice build, sweet, simple, clean and efficient, a good example of DIY.

Thank You Firebrand. :tiphat:

So build 2 has begun. For the mechanical I used angle aluminum 1/2" 1/20" thick. Found at Home Depot for $6.50 per 8' stick. 4 pieces at 28" and 2 pieces at 6 1/2". Used eyelets with 2 nuts each to secure the 4 corners and used 8-32 screws to secure center rails.
Here's a pic of frame pieces.

With the hardware attached.

With the chips mounted.

Made some mistakes on drilling and tapping (broke my tapper). Found that you don't need one if you just use a 7/64 drill bit the M3 screws will tap for you.

Also would like to add that you can fit 6 cobs and 2 drivers on this footprint if you have the bucks and want to blast your space. I'm going for more spread with my setup.

Next up is Electrical.

Peace, Roast.

Donkeybrains · Apr 2, 2016

Nice rigs! I just built some CXB3590's and love em! I was going to build some vero29 next let us know what you like the best. The specs look very similar but vero's are a lot cheaper. Mingfa has passive heatsinks for 12 bux gonna go fanless on the next build. Best of luck to ya brotha!

Roasty McToasty · Apr 2, 2016

Donkeybrains said:
Nice rigs! I just built some CXB3590's and love em! I was going to build some vero29 next let us know what you like the best. The specs look very similar but vero's are a lot cheaper. Mingfa has passive heatsinks for 12 bux gonna go fanless on the next build. Best of luck to ya brotha!

Wow thanks Donkeybrains! :tiphat:

The Alpine Arctic 64 plus that i use is $13.69 on Amazon Prime. The driver to push 4 fans is $6 and change. Keeping your COB's cool benefits you in efficacy and longer lifespan. Could be overkill for my setup as i have excellent air exchange, but you know that anything worth doing, is worth over doing.

Peace, Roast.

Firebrand · Apr 2, 2016

The hot set up, Cree or Bridgelux COB's, Meanwell drivers and Artic Cool heatsinks and fans.

Roasty McToasty · Apr 2, 2016

Firebrand said:
The hot set up, Cree or Bridgelux COB's, Meanwell drivers and Artic Cool heatsinks and fans.

FTW

Donkeybrains · Apr 2, 2016

I had a fan go out on me and burned a $60 chip

that's when I started looking into passive cooling.

Roasty McToasty · Apr 2, 2016

That is a viable disadvantage with active cooling. Was you chips wired in series or parallel? If parallel it may have been thermal runaway. Also what are you driving them with?

Peace, Roast.

jikko77 · Apr 2, 2016

nice design, remind me of something

.
i did put out the driver out the g.b. with a cable 1.5m long, i'm in love with it, give a look man :tiphat:

Roasty McToasty · Apr 2, 2016

jikko77 said:
nice design, remind me of something .
i did put out the driver out the g.b. with a cable 1.5m long, i'm in love with it, give a look man

Thanks jikko77. I know a good design when i see it.
Do you mean have the driver outside your growspace?
Do you have a link to check it out?

Peace, Roast.

jikko77 · Apr 2, 2016

if u don't mind a couple of pic's, the fan driver is inside the plainwood case, now:

Roasty McToasty · Apr 2, 2016

Nice jikko!

What chips you running? What current?

Peace, Roast.

jikko77 · Apr 2, 2016

3x cxb3070, ad, 3500k @1400mA. 90cri iirc. :tiphat:

2nd Build-DIY COB with Vero 29's x 6

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