DiY LED Grow Lights with CREE CXA3070 COBs and CPU Coolers

SomeGuy

SomeGuy

Well-Known Member
Im watching this. I am thinking of replacing all my HPS setups with a whole new LED tent setup. I can build these for sure.

Do you have any links of where you purchase or any other builds for this type of led module? Are 3090CXA available yet?

Thanks for posting.
 
clp56

clp56

Well-Known Member
BUMP - also wondering the power source for the fans. You list two different products.

AWESOME setup though. I plan to copy :)
 
OldnTired

OldnTired

Member
Great thread, I read through the first one and continued on here.
This is something I'm going to have to try as I have all the parts minus the COBs and drivers.
I have a 6x2x6 (LWH) grow space, I think the 8 COBs should be fine. Are you using this for both veg and flowering?
 
D

DarthBlazeAnthony

Well-Known Member
OldnTired said:
Great thread, I read through the first one and continued on here.
This is something I'm going to have to try as I have all the parts minus the COBs and drivers.
I have a 6x2x6 (LWH) grow space, I think the 8 COBs should be fine. Are you using this for both veg and flowering?
Click to expand...
I do not know for sure but I'm pretty sure you would be good for veg and bloom.
 
IlovePlants

IlovePlants

Well-Known Member
Any plans to upgrade this with 50-100w of 660DeepReds like suggested above? Stellar growlight for the money. I just dropped 600$ to build this, and I'm looking into adding an additional 100w of red, should make for a hell of a light.
Best of luck in your growing endeavors,
ILovePlants
 
HockeyBeard

HockeyBeard

Well-Known Member
IlovePlants said:
Any plans to upgrade this with 50-100w of 660DeepReds like suggested above? Stellar growlight for the money. I just dropped 600$ to build this, and I'm looking into adding an additional 100w of red, should make for a hell of a light.
Best of luck in your growing endeavors,
ILovePlants
Click to expand...
That would put this baby over the top, wouldn't it? I agree, that supplementation would be a great boost, I plan on putting them into my build here soon as well. Nice, clean build, lots of proven power in these COBs... Great work!
 
makomachine

makomachine

Member
New member and very interested in more info and continued grow pics! I'm on the fence for two Area 51 XGS at the moment and this DIY has me intrigued. Like the flexibility in the slides for coverage adjustments - brilliant design. What's the practical range of coverage for flowering?
 
D

DarthBlazeAnthony

Well-Known Member
Gaius said:
Hello again folks. Apologies for the long lull there. I quit my job a month ago and have been working major overtime to build a new design/development portfolio. So anyhow, I've had little time to post anything here.

Today I'm taking a much-needed break and thankfully the forums are working again.

Here's the final update from the first round with the Ganjatica! (No fancy photos this time though, as I only had time to snap a few quick shots with my phone.)

Harvest Day:






And the final haul:


All together it's going to be about 12-14oz dry. The buds are ridiculously dense, so I'm freezer-curing to ensure zero mold. This is by far the stickiest bud I've grown in the last few years.

This round was only 4 main plants, plus a few little lolly-pops I flowered out 12/12 from seed for pheno-hunting purposes. I took the best Bubba Kush pheno of that group and tossed it into the veggie bin a couple months ago. Since then that plant grew into a nice bushy momma, which was just chopped up a bit to create 8 large Bubba Clones. Of these 8, I'll select the strongest 6 for the next round under the Ganjatica.

I'm now totally confident the Ganjatica can pull over a pound (dry) with the full 6 plants it was designed for (and an extra week or two of vegging).


It's an elegant light, for a more civilized age.​
Click to expand...
Legendary!! Thanks for the post! How many total hours do you estimate it took you to build your cree light?
 
D

DarthBlazeAnthony

Well-Known Member
Gaius said:


Easily build your own high-power LED Grow Light using COBs!

(Built with assistance of RIU contributors! - Original thread )


[HR][/HR]
Battlestar Ganjatica - A 480 Watt Multi-Mode LED Grow Light


6x CREE CXA3070 @ 3000K - $36ea ($216)

2x CREE CXA3070 @ 5000K - $38ea ($76)

8X Meanwell LPC-60-1400 Drivers - $20ea ($160)

8 Arctic Cool CPU Coolers - $9ea ($72)

Rhino 12v External HDD Power supply - $9 (for powering fans)
1 Tube Thermal Adhesive - $8

3'x1' White Shelving board - $10

4x Bottom Sliders for Drawers - $7ea ($28)
(link is not exact model. I only paid $7 each in-store)

3x 2-way Switches - $4ea ($12)

4 heavy-duty stainless eye bolts - $1ea ($4) (in-store)

10 Pack In-sure easy wire connectors - $2

6-Pack Blue Mid-line connectors - $2

TOTAL PANEL BOM: $599

MISC Other Materials:




Ignore the fan-speed controller. Didn't end up using it.


[HR][/HR]

Wiring is pretty basic. Just scale up the below diagram (provided by RIU member Goud)




[HR][/HR]

And here you go!






3 Modes: Veg, Teen, Bloom







Preliminary Results look good!

First day over plants:


Week or so later:


​
Click to expand...
If I get a chance to build this I will be sure to post photos here. So many great ideas on this site.
 
C

chief herb

Active Member
epicfail

epicfail

Well-Known Member
chief herb said:
Can anyone suggest a good driver for these CXA3700's that can be controlled with a 5v pwm from an arduino? I have used the Meanwell LDD line but cannot find one that is similar to recommended drivers power. They have a 1.5A one, the LDD 1500L (http://www.mouser.com/ds/2/260/LDD-L-spec-271480.pdf), but it only goes up to 30v. They have the LDD-H line that goes up to 56v but the highest current I could find is 1A with the LDD 1000H (http://www.mouser.com/ds/2/260/LDD-H-spec-248139.pdf).
Click to expand...

I use an arduino to control dimming on Mean Well HLN and HLG-C series drivers with the circuit on this page, it works great for me. It converts the 5v to 10v and I just run it from a separate 12 volt power supply, technically it is not using PWM but 0-10v to control dimming but works the same.

https://www.rollitup.org/t/diy-led-cree-cxa3070.789575/page-74#post-10695272

and there is more information on how to do it in this thread.

https://www.rollitup.org/t/meanwell-led-drivers-3-in-1-dimming-function.838760/
 
C

chief herb

Active Member
epicfail said:
I use an arduino to control dimming on Mean Well HLN and HLG-C series drivers with the circuit on this page, it works great for me. It converts the 5v to 10v and I just run it from a separate 12 volt power supply, technically it is not using PWM but 0-10v to control dimming but works the same.

https://www.rollitup.org/t/diy-led-cree-cxa3070.789575/page-74#post-10695272

and there is more information on how to do it in this thread.

https://www.rollitup.org/t/meanwell-led-drivers-3-in-1-dimming-function.838760/
Click to expand...
I couldn't find a good choice on those Meanwell drivers that wasn't upwards of $40 each. I think I will go with the 1.2A rcd driver suggested by guod (http://www.mouser.com/ProductDetail/RECOM-Lighting/RCD-48-120-M/?qs=sGAEpiMZZMt5PRBMPTWcafkZyLbOcVwI1Ud2vaoFQZE=). I am slightly confused with how to wire it up, does anyone have a simple diagram or can explain how this should wire up to an arduino? From the data sheet it seems I would just hook up Vin to pin 1, ground to pin 2, led- to pin 6, led+ to pin 7, arduino 5v to pin 3, and just an arduino pwm pin to pin 4 of the rcd with pin 5 not used. Is that correct?
 
H

hardprogger

Member
chief herb said:
I couldn't find a good choice on those Meanwell drivers that wasn't upwards of $40 each. I think I will go with the 1.2A rcd driver suggested by guod (http://www.mouser.com/ProductDetail/RECOM-Lighting/RCD-48-120-M/?qs=sGAEpiMZZMt5PRBMPTWcafkZyLbOcVwI1Ud2vaoFQZE=). I am slightly confused with how to wire it up, does anyone have a simple diagram or can explain how this should wire up to an arduino? From the data sheet it seems I would just hook up Vin to pin 1, ground to pin 2, led- to pin 6, led+ to pin 7, arduino 5v to pin 3, and just an arduino pwm pin to pin 4 of the rcd with pin 5 not used. Is that correct?
Click to expand...
which power supply to you take?
 
C

chief herb

Active Member
guod said:
arduino 5v to pin 3...
pin 3 is Vref for pin 5 analog. nice feature for analog dimming with a pot. --> build in powersupply.
https://www.rollitup.org/t/led-diy-making-of-a-dj-set-style-grow-led-light.619348/page-7#post-8629816


Arduino GND to pin 2
and an Arduino pwm pin to pin 4
Click to expand...
Thanks for the help. For a power supply I was thinking of going with the Meanwell se350 (http://www.mouser.com/ProductDetail/Mean-Well/SE-350-48/?qs=sGAEpiMZZMsPs3th5F8koBXG/88ctzcMhAVYYOTnmak=) as I have used it before, it is reliable and not that expensive. It goes up to 7.3A so I could only put 6 drivers on one of these but I plan on upgrading to 2 systems with 2 deep reds on each system later for a final total of 3 se350's for 18 drivers. Do you have a better recommendation for a power supply?
 
nogod_

nogod_

Well-Known Member
Gaius said:


Easily build your own high-power LED Grow Light using COBs!

(Built with assistance of RIU contributors! - Original thread )


[HR][/HR]
Battlestar Ganjatica - A 480 Watt Multi-Mode LED Grow Light


6x CREE CXA3070 @ 3000K - $36ea ($216)

2x CREE CXA3070 @ 5000K - $38ea ($76)

8X Meanwell LPC-60-1400 Drivers - $20ea ($160)

8 Arctic Cool CPU Coolers - $9ea ($72)

Rhino 12v External HDD Power supply - $9 (for powering fans)
1 Tube Thermal Adhesive - $8

3'x1' White Shelving board - $10

4x Bottom Sliders for Drawers - $7ea ($28)
(link is not exact model. I only paid $7 each in-store)

3x 2-way Switches - $4ea ($12)

4 heavy-duty stainless eye bolts - $1ea ($4) (in-store)

10 Pack In-sure easy wire connectors - $2

6-Pack Blue Mid-line connectors - $2

TOTAL PANEL BOM: $599

MISC Other Materials:




Ignore the fan-speed controller. Didn't end up using it.


[HR][/HR]

Wiring is pretty basic. Just scale up the below diagram (provided by RIU member Goud)




[HR][/HR]

And here you go!






3 Modes: Veg, Teen, Bloom







Preliminary Results look good!

First day over plants:


Week or so later:


​
Click to expand...
Hey man,

Really dig your lamp. I'm relatively new to electronics and dont see/understand how you go from your 8x drivers to your switches. Also are the fans on the same string as the chips?

Thanks and keep it up!

Danke!
 
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