Stealth/Safe DIY CXA3070 panel ... done !!!

Dawamesk

Active Member
Wassup homies ?!

I've been working on my 150W panel for a while now and I'm proud to announce this turned out to be a complete success!

No need to say I couldn't have done this without your invaluable help as well as passionated and dedicated friends who spent time on this project with me ... I'm really grateful guys, so before we go further with detailing the building process I first need to tremendously thank all of you !!! Real international farmers spirit JAH BLESS :peace:



So we've build a 4xCXA3070 150W passively cooled dimmable panel out of the following parts:

- 4x Cree CXA3070 AB bin (I was quite HAPPY being able to get those for a very descent price;))
- 8 COB holders from TE Connctivity (model 1-2154857-3)
- 2x heatsinks 5.88"x14"
- 2 Aluminun profiles
- 1 Meanwell HLG-
- PK3 thermal compound
- 18AWG solid core electrical wire
- Kapton tape
- A few M3 screws, heatshrink tubing, ground wire ...

Globally it was fairly easy to achieve the panel construction even though we have encountered some troubles that were mostly related to the tapping process.
In fact, it took us a good amount of time designing the drilling/tapping template for the cob holders. We've struggled with scaling the spec sheet diagram to the right size before we decided to start over and create our own template with Photoshop. So before anyone spend more time on this sh*t just help yourself and print the file attached to this message out ;-)

On top of that, our tapping tool did break in the last of the 8 holes we had to tapp, and stayed stuck right in it :clap: A little trip to the hardware store and a new set of holes tapping later and we were done with this annoying process. If you ever notice a non symetrical postion of the COBs on the actual pannel picturs ... you don't have to ask why no more :cry:

Besides that, I have to say the COB holders from TE Connectivity definitely worth the drilling/tapping mess ! It adds a really safe/proffesionnal touch to the pannel which I like a lot and it also helps with thermal dissipation.


The rest has been done with no hassle whatsover: sanding the heatsinks, applying thermal paste, plugging some wires, using kapton tape to secure the whole thing ... check the pics, they describe it all better than a thousand words.


And then God said ''let there be light'' ... efficient light !!!


After 10 minutes of use we've seen 144.3 Watts on the multimeter at max power compare the 155.4 announced on the driver spec sheet ... pretty good I guess :-D Didn't have enough time and tools to make more measurements but this will come as I will get a thermometer from a friend and will perfom more tests with the multimeter as well. Will of course let you know accordingly.

And that's about it ! Now the panel has already kicked in my grow room and is flooding my seedlings with some nice and numerous photons !!! Follow the thread for more updates on the coming grow, the goal is to get 1Gr./W with this session :bigjoint:


Again, thank you to all of the inspiring and dedicated folks who got involved in this, special shout out goes to Supra, Happy, T. and P..... real badasses that's what you guys are !!!
 

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churchhaze

Well-Known Member
Nice work!!

The only thing I can see being a problem is that the angle bars block the exhaust/intakes (depending on whether it's passive or active). If that does become an issue, maybe you could drill intake/exhaust holes in angles for each channels, although that could be a huge amount of effort and make the project start looking like swiss cheese fast!

(edit: I almost thought you posted pictures of my new baby killers at first)
IMAG0150.jpg

Edit more:
But then I realized the fins are going the other way! I'm thinking of using angle bars too, but they wouldn't block the airflow because the fins are going the other way!
 

Dawamesk

Active Member
Well dude,

I have to say I thought the same thing but for now the temperature looks ok even though I have no thermometer to verify that statement ... We'll know more when I get one a make some proper readings ;)
 
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