CXB3590 1500W

Airwalker16 said:

Yeah I posted a link to the 4 chip one you're referring to I think. So no resistors are needed for series? You'd just go positive in, hook a little "U" shaped wire from negative to pos/negative to pos, and a negative line out?also, being that small forward voltage, to run them at 700-1000 MA for the most output as I'd not be running them long AT ALL, what's a suitable driver?

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For series, yes jumpers required however we will prebuild these on our pick and place machine to your spec, if you can tell me how many your thinking I can advise best case driver
Cheers
Mark

Fastslappy said:

Hey Mark, @cutter , welight
I know you can do kits of popular LEDs that we here use as the 3590 kits
any chance that you could put together a far red kit with these solderless pcb's ?
a kit as in a suitable driver/drivers that would run a 'X' amount of far reds that we could scale up or down ?
the far reds we use at the end of flower for a short period 15 minutes at the end of a day cycle .
we should move this conversation to the Far Red Thread https://www.rollitup.org/t/the-far-red-thread.867665/page-16
there are very knowledgeable Far Red enthusiasts on that thread !

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definitely be happy to put preconfigured kits together
Cheers
Mark

welight said:

For series, yes jumpers required however we will prebuild these on our pick and place machine to your spec, if you can tell me how many your thinking I can advise best case driver
Cheers
Mark

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Well I'd want maybe 3 tris

Airwalker16 said:

Well I'd want maybe 3 tris

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So whatever would run 3-4 of the tri pcbs

Hey Supra, Growmau, and everyone else. I'd like your help thinking through something.

Can you help me understand which driver to choose? I'd like to order a driver that will let me push two or three COBS hard, until I can get some more funds together to get more COBS, and dial in the efficiency.

Why wouldn't someone get a HLG-240-1400? Why would you choose one of the lower amp models, couldn't the higher amp models just be under driven?

Thanks everyone. I'll be asking a bunch of questions. I just finished putting together my first COB display. It's built on lohas chips, MW power supplies, Buck boosters and fans. They're running at apx. 30.5--31.5 v out of the buck booster, and 12-14 v into the buck booster. Could someone help me figure out how to measure amps without shocking myself? I'm not entirely sure what to do.

2 x 100 w (mix of warm and cool) per 15 inch DIY heat sink with a mix of 40mm and 80mm fans. The first three bars are up and running well, the last goes in tomorrow. Amazon got my chips wrong, and accidentally sent cool chips rather than warm for 3 of 4 COBs on my last order.

Being impatient, rather than return the cool white COBS to Amazon, that display will be used for vegging once this next display is built.

My only parameters are that I'd like the COBS to be mounted on individual heat sinks, if the cost isn't significantly more. I'll be using a 3' or 3.5' piece of steel c channel for the frame. Each COB will be able to move, and the frame will be able to expand. As of now, my plants are controlling me more than I'm controlling them. Being able to adjust and add to my first display has already helped a lot.


Thanks!

Airwalker16 said:

So whatever would run 3-4 of the tri pcbs

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In series or Individually addressable or??
series would be 5-7 volts, so 4 would be 20-30 volts. You could tap 30 volts off the end of a MW supply(1050ma)version if you have it available or you could use a Meanwell LDD DC/DC led driver, however you would need separate 36 constant Voltage source to drive it, similar math applies. If parallel voltage drops but your current will get halved for every led iteration
Hope that helps
Cheers
Mark

To clarify, I'd like to use 4 3590s at 3500k, with a HLG-240-1400. Eventually, I'd like to add another COB and bring the wattage/cob down. Can someone help me understand the relationships between watts and amps?

Intuitively I think 4 COBS could run at about 62.5w/cob, what would the amperage be? Also, which lens combination would I want for a panel that will run 50-60 watts throughout its life?

At this point, I'm debating having 2 of the 4 cobs use lenses intended for the edge of a grow, and used in a 2 x 2 array, and creating a single long string of 4 cobs to cover an entire 4 foot edge of the grow.

Due to the height of a few plants already, I may try to put 2 of the plants into a vertical grow and wrap them up the sides of the tent. (4x4x6.6). Because each cob will be mounted separately on a frame,

I'm thinking about going from a 4x3 frame (with the string of 4 3590's covering the other 1x4), to a 2x2 frame (of the 3590s) near the top of the tent point at 90 degrees down, with 4 cobs on a 1.25ft x (variable) frame, pointed at 45 degrees. The frame pointing at 45 degrees are fixed on one side of the rectangle at 1.25 ft; the other side of the rectangle can be adjusted to fit in the space remaining.

So, I will try to continue training down my LST and shorter plants, and keep them in the middle of the tent, and will move the taller plants to the edge.

Tips for heat sinks (large enough for passive, but will be active, in case fan fails), should they fit the parameters of my goal; otherwise, the units will be actively cooled.

Thanks again.

After looking at the tent, the 45 degree COB fixtures may be single strings of two COBS, fixed 15 inches apart. There would be 3 walls of vertical growing with the 45 degree fixtures. I have 4 15 inch bars with 100 watt Lohas cobs to work with on the sides. WIth the 3590s driven at apx 60 watts each, that's 1200 watts of fixtures, though I do not know how to measure the amps to determine watts, and I don't have a way to measure PPFD.

Thanks again, again.

A, at 1400ma it will be 50 watts approx you need the 1750ma driver to get 62 watts.
The cob voltage changes some with different amps but is determined by the amperage
you use.

Use this cree tool http://pct.cree.com/dt/index.html
select the cob you want info on and the info wanted and drive current

Gl OG

Thank you GI OG,

I'm going to check again, but I don't remember seeing a HLG that runs above1400ma. Am I mistaken?

I tried the medium and coarse amp ranges, but no other data came out. Can anyone help me figure out what I did wrong, regarding how to use that page?

Thanks.

Others have said that if you don't use the maximum voltage than the driver can provide more amperage than rated. Volts times amps gives wattage, so a 36v cob on a 1 amp driver will run at 36w. The 240 series driver you mentioned would work great for 5 3590's and will also give at least 50w of power each to just 4 maybe more.

Thank you grouch,

So in series the 240-1400, 1.4 a and 179 v) would run 50 watts to 5 lights, and maybe a bit more to 4 lights? At 1.4 a that's 142 volts to 4 lights, and 178.5 volts to 5 lights, right?

ACitizenofColorado said:

Thank you grouch,

So in series the 240-1400, 1.4 a and 179 v) would run 50 watts to 5 lights, and maybe a bit more to 4 lights? At 1.4 a that's 142 volts to 4 lights, and 178.5 volts to 5 lights, right?

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Here you go mate check this link https://www.rollitup.org/t/matching-drivers-and-cobs.883866/

Heya everybody !!

Just gotta say I am loving this thread.
I use to grow with HIDs when I lived out West. Moved back to the Midwest and still wanted to grow meds but had to scale it down for more of a "personal" grow. Naturally went led. Cheap ones at that lol 2 sunspect panels pulling an actual 280w each in my roughly 4x3 space. They grew plants and I had some really nice quality but yields lacked. Think I got .35 gpw in water only homemade organic soil. Ewcs ftw !! It's like hot sauce. I put that shit on everything.
i plan on running 5 cxb3590 3500k on a solid bar heat sink for passive.Thinking 40-44 inches on the 5.8 for passive with one hlg 240 1400 driver. I built a little stand alone cob with cheap/free parts already to get my feet wet. I am digging it. Ugly but working. I guess my questions are..

I want to put an on off switch on it and have a nob to dim the chips. Which driver model in the 240 series ? How do I wire that nob to my driver ?
Thanks for all this chat on this. You have turned me to the dark side lol

This is my first post on RIU. I have been on another forum for a couple years but this has become my go to for all things diy and thinking about starting a grow thread over here. I sold the two blurple panels. Time to start getting serious on this. I reckoned selling these would not only help fund this build it would force me to pull the trigger on this build. Flower starts again in 6 weeks lol

WooHoo

Pleasant Peasant said:

Heya everybody !!

Ewcs ftw !! It's like hot sauce. I put that shit on everything.


WooHoo

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I about fell out of my chair laughing at that one! Welcome to RIU!

I'm no diy pro but I'll be happy to help any way I can.

I'm running a rather large crowd of those very chips, so I'm looking for confirmation I made the right choice, you get me? Lol

Looking forward to seeing your thread, and meanwhile have a look at mine, link in my signature line at the bottom of every post (turn your smartphone landscape to see it).

@ plesant peasant. Those are beautiful!! What are ewcs? I'm new to this. Want to share your secrets for growing such nice tree?

ACitizenofColorado said:

@ plesant peasant. Those are beautiful!! What are ewcs? I'm new to this. Want to share your secrets for growing such nice tree?

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Earth worm compost I'm guessing. Done right that stuff is miracle poop.

bicit said:

Earth worm compost I'm guessing. Done right that stuff is miracle poop.

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I make my own castings now lol. I have a Worm Factory 360 with over 5,000 worms in it and growing

REALSTYLES said:

I make my own castings now lol. I have a Worm Factory 360 with over 5,000 worms in it and growing

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I'd like to pick up a worm inn mega one of these day's. Those look like nice units. My home made efforts have been less than impressive.

bicit said:

I'd like to pick up a worm inn mega one of these day's. Those look like nice units. My home made efforts have been less than impressive.

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As long as you get castings is all that matters