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Below you find a link to a top notch DIY light, outperforms any commercial light at a fraction of cost. From what I read here, even the 5000K are not necessary to get gorgeous plants, only slightly more energy efficient during vegging. Otherwise read all the various 40+ pages threads in this...

Did you have to pay any taxes that where not billed by mouser or deal with customs? Digikey.com is another option, free shipping from EUR 65 on as well. For parts sourcing check octapart.com

The lower prices for the Vero (expecially pronounced with smaller cobs, i.e. Vero 10) compared to CXA makes the Vero more interesting as it fosters underdriven operation, but contradicts with the fact that Vero is not show significantly increasing efficiency when underdriven. That was mindf****...

Hideliho, need some advice limiting the options and pointing me in the right direction, I have never had a COB in my hands:roll:. Goal: Perpetual microgrow within limited space, short bushy plants with lateral root growth as well as short flowering would be beneficial. Vegging in a PC case...

Digikey has some Samsung modules LAM-32LED available in two sizes: 259.00mm L x 250.00mm W for 20.55$ 273.00mm L x 216.00mm W for 21.44$ At first glance interesting. I played with the numbers for benchmarking against Vero/CXA: Powered by the test current of 385 mA (9.2 W), the 3000K 80 CRI...

Longer flowering? 9 weeks instead of? :mrgreen: Relax, 1.36 gpW comes down to 1.21 after normalizing to an 8? week flowering period.:wink: Deep? red seems to change the ratio of ripening of colas vs. more bud grow towards ripening and by that shortening of flowering time up to the extreme of to...

Correct, but there remains at least a little hope that these biologist obey physics. If the light source is a few mm away from the top, there will be a strong decrease in intensity as a function of distance from the light source, physics of a point source emitting a wave into free space. I...

I am about to freeze the design for powering my 1 sqft mother & vegging area. Driver, thanks to Supra: For Cree CXA, I would have choosen the next larger COB size to increase the efficiency. But for Vero series, I am not sure if that pays out. Fact is: for a given Vero COB, efficiency is not...

Mr.Flux, these minimum values are only a minor issue for the Vero compared to what I was able to calculate from the numbers within that spreadsheet.... o_O Greengenes, thanks for pointing me at SupraSPLs numbers and help me out of my confusion. When I looked at that spreadsheet the last time, I...

SDS, MrFlux, SupraSPL Positivity, etc. thanks for the valuable input in the threads "Cree CXA analysis", "DiY LED - Cree CXA3070", "vero 29 questions" and "bridgelux vero???". Would you mind to start once again a discourse on Vero vs. Cree and comment? From what I remember, I summarize/ claim...

Nope, that one will not allow for two power levels(switching between 300 and 600 mA) by adding/removing the second driver. FYI, members of BudgetLightForum.com get a 5% discount on fasttech LED-related parts by entering a 3 letter coupon code...

Gentlemen, I need some input on a hopefully not-so-stupid idea: Is it possible to drive one CXA3070 with two of SupraSPLs 300mA 3$ ebay drivers, with the outputs wired in parallel to end up with ~600mA. That should work out fine as long as the current-sense feedback circuitry won´t sense the...

GE report on indoor (lettuce) grow http://www.gereports.com/post/91250246340/lettuce-see-the-future-japanese-farmer-builds