Interesting app! I would like to know more about these it, is it available open source or is there a beta version? Is it iOS or Android based, are other tools needed, Windows, sensors,..
I think you guys are doing fine with the CoBs. I think you you can do better.
COBs are easier for DIY.I am seeing 100-300V supplies being used because the 35V CoBs are in series.
I am in the business of horticulture narrow band research. No CoBs allowed.
I do not understand where you got the impression that CoBs are superior to discrete 1-3W LEDs, but I can kick the shit out of any CoB with discrete narrow band LED design.
Well, it also depends on the COB and the discrete LED.Mainly to improve uniformity to get the LEDs closer to the canopy. Much closer. I do not care what color, just what ever works the best.
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I am being misquoted. I have never promoted mono wavelengths.
I have said I prefer discrete LEDs over CoBs but never specified any color. The purple LEDs were brought up by someone else and I only gave my opinion. And actually I said I do not like the purple.
There is almost no published studies on cannabis. Lots on tomatoes, lettuce, and basil. There are rumors that the feds may give in and the Universities will be able to do cannabis studies a couple of years down the road. So guess what? You guys are the one of the few places that have data on cannabis. But you already know that.
I'm not that guy that came here to make trouble. I have 40 years of electrical engineering and had a manufacturing businesses for 20 years.
I think you guys are doing fine with the CoBs. I think you you can do better. Mainly to improve uniformity to get the LEDs closer to the canopy. Much closer. I do not care what color, just what ever works the best.
If we can agree that 1000 µmole PPFD is the same whether it comes from a CoB or a PCB with discrete LEDs then we don't have much to disagree on.
I certainly have not said anyone here is doing any thing wrong other than using Lumens to make bad decisions. I have expressed one opinion on CCT and CRI and that is within a the same series of LEDs (or CoBs), the Deeper the Red, the better. The higher the wavelength on the Red Peak is better and more important than any other characteristic. That's my opinion, not a fact. Do I care to debate that, NO. Live and let live.
So one more time, why do you prefer discrete LEDs over cobs?I am being misquoted. I have never promoted mono wavelengths.
I have said I prefer discrete LEDs over CoBs but never specified any color. The purple LEDs were brought up by someone else and I only gave my opinion. And actually I said I do not like the purple.
There is almost no published studies on cannabis. Lots on tomatoes, lettuce, and basil. There are rumors that the feds may give in and the Universities will be able to do cannabis studies a couple of years down the road. So guess what? You guys are the one of the few places that have data on cannabis. But you already know that.
I'm not that guy that came here to make trouble. I have 40 years of electrical engineering and had a manufacturing businesses for 20 years.
I think you guys are doing fine with the CoBs. I think you you can do better. Mainly to improve uniformity to get the LEDs closer to the canopy. Much closer. I do not care what color, just what ever works the best.
If we can agree that 1000 µmole PPFD is the same whether it comes from a CoB or a PCB with discrete LEDs then we don't have much to disagree on.
I certainly have not said anyone here is doing any thing wrong other than using Lumens to make bad decisions. I have expressed one opinion on CCT and CRI and that is within a the same series of LEDs (or CoBs), the Deeper the Red, the better. The higher the wavelength on the Red Peak is better and more important than any other characteristic. That's my opinion, not a fact. Do I care to debate that, NO. Live and let live.
No one appreciates a "newbie" introducing themselves with an essay about how no one knows what theyre talking about.
So how do you feel about mixing the 2 techs to make a gavita killer?
View attachment 3928587
So one more time, why do you prefer discrete LEDs over cobs?
close enough for what ? heres those 2700k cree from the same batch.this plant is over 4 feet tall,cobs mounted at 6 feet from the floor.i think they work ok?I'm going to start by saying, that I have nothing against CoBs and I understand why they are being used here.
Two reasons.
1) I'm real anal on thermal. CoBs have too much heat crammed into a little area.
2) CoBs cannot be positioned close enough to the canopy.
How close do you run your discrete LEDs to the canopy? And you mentioned 1000 umols...is that your target at the canopy?I'm going to start by saying, that I have nothing against CoBs and I understand why they are being used here.
Two reasons.
1) I'm real anal on thermal. CoBs have too much heat crammed into a little area.
2) CoBs cannot be positioned close enough to the canopy.
So how do you feel about mixing the 2 techs to make a gavita killer?
View attachment 3928587
i think they work ok?
I took a closer look at the Quantum Board. It's not for me. I know my weaknesses. I cannot do anything carefully and I like risk. That is why I just recently gave away my Harley. If I kept riding it, I'd likely be dead. I you think giving a Harley away is weird, wait. I gave it to my ex-wife's husband. I do not know why I do some of the things I do.
For that reason I will not work with lethal voltage. When I'm working with home wiring, 9 out of 10 times I get shocked. I still will not turn off the breaker.
The µMole/J is impressive.
I find this uniformity a little problematic. This can be improved with a wider view angle and better spacing between LEDs. Still it does the job.
View attachment 3928684
YES! They work great. And I like the fire extinguisher.
Now think of this. If you can position the lights 6" over the canopy that is pretty damn good.
If you can position them at 5 inches that is a 44% increase in PPFD.
4" 125%
3" 300%
2" 800%
1" 3500%
That's impossible? The impossible is only impossible until someone does it.
Both reasons also depend on the die density inside the COB.I'm going to start by saying, that I have nothing against CoBs and I understand why they are being used here.
Two reasons.
1) I'm real anal on thermal. CoBs have too much heat crammed into a little area.
2) CoBs cannot be positioned close enough to the canopy.
How close do you run your discrete LEDs to the canopy? And you mentioned 1000 umols...is that your target at the canopy?
not the most scientific but a good reference