The Chinese Quantum Board Knock Off Builds

Moflow

Well-Known Member
Best place to buy driver is Digikey or Mouser... no shipping cost
Contact Rita from Meiju and ask only for kits without driver...they will send u even only one board...
And yea they are genuine ML301b but not top bin...
If u order driver from china it will boost shipping cost...
If you are UK, Europe Don't forget TME EU as well.
TME EU MW 320h 48A £63
Mouser UK MW 320h 48A £83
Digikey UK MW 320h 48A £70
 

Moflow

Well-Known Member
some seriously healthy plants Moflow !
Especially interessting strains you grow there, have a few of these myself, so always nice to see.
I hope you will write some lines about their quality, your harvested RQS Gorilla looked quite promissing :-)

As far i see you left quite a lot big leafs, would be interessting to hear how you deal with this topic.
The RQS Royal Gorrilla is a keeper, I've had it for a couple of years now, I'd need to check.
I grew them from seeds from a friend. This one is easy to grow, easy to clone, has a short to medium height which suits my limited flower room height and it's a half decent yeilder.
A couple of my friends are growing it now, they really like it too. It's a strong smoke.
The Moby Dick plant is huge, I've it bent and snapped and tied in knots and weaved to keep it he canopy even. The Gorrilla to it's left is raised up 4" - 5" and the RQS Criticals are raised up 10" - 12" so the canopy is fairly even.
I've a few strains here at moment.
Kings Banner clone in the garden in a pot. I grew a few regular seeds a while ago and liked this one. Cloned it, gave some clones to mate who in turn cloned it and I got it back.
Short and stocky plant. Very strong smoke.
Paradise Seeds Sensi Star original in the garden, must be coming 11 years old now.
Indica Medium yeilder , potency is tops, smells beautiful and is ideal for making oil, a real greasy plant.
Candida CBD - sounds like a sexually transmitted disease to me. In the garden. Another mate gave me this. I thought he was giving me GDP but he lifted the wrong clone ffs lol
Then I've Gorrilla, Sensi Star original and a Moby Dick all clones in various stages of veg.
The Moby Dick might be good, might be mediocre so it's cloned just in case......
Always clone your seed plants, even if it's only one clone cause one day you will touch lucky and get something special , a real keeper.
Oh, and a picked up a very badly neglected Bruce Banner regular seed plant in a 4" rockwool block offa another mate today.
The rockwool was black so I cut the black shit off the top and sides, potted it up in soil mix.
Sprayed it with sbd plant invigorator
 

cobshopgrow

Well-Known Member
thats pretty detailed!
Somehow it convince me to try a gorilla one day, maybe the RQS one.
The Moby Dick is interessting too as it is one of the Dinafem Flagships, have fun with it!
Only problem is that i have a few strains allready here, so it have to wait.
Have Critical 2.0 Dinafem, RQS Green Gelato, Sweet Seeds Do Si Dos, Dinafem OG Kush f.e.

These are my RQS Bubble Kush btw., lights are doing well!
 
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cobshopgrow

Well-Known Member
last but not least, thinking of pimping my panels.
Have a few spare volt on my cc drivers.
5V on the 240 and 11V on the 320 setup.
Will maybe do a PCB for fun, will have a perfect fit then also.
But what diodes to take?
Are Cree XP-E 660nm still the hot shit?
Think 660 maybe makes the most sense (use 3000k) ??
Maybe there are some UV options who fits and make sense.
Who is up to date there?
 

panckage

Active Member
I'm currently looking into getting a 125w Kingbrite qb288 w/ lm301h 3000k.
They sent this pic about the bin:


They claimed "top bin" sk. Since this shows s0, its a lower bin sk. This package has a flux range
(page 8 from Data_Sheet_LM301H_CRI80_Rev.1.2.pdf ) of 36-38 while for the actual top bin it is 38-40, so 5% less flux on average.

It costs $128 with shipping. Assuming $10 + 10% for duty = $150

Does this sound about right? Any thing I'm missing?
 

Rocket Soul

Well-Known Member
I'm currently looking into getting a 125w Kingbrite qb288 w/ lm301h 3000k.
They sent this pic about the bin:


They claimed "top bin" sk. Since this shows s0, its a lower bin sk. This package has a flux range
(page 8 from Data_Sheet_LM301H_CRI80_Rev.1.2.pdf ) of 36-38 while for the actual top bin it is 38-40, so 5% less flux on average.

It costs $128 with shipping. Assuming $10 + 10% for duty = $150

Does this sound about right? Any thing I'm missing?
Pics of ledchip packaging doesnt really mean anything. Its a decent gesture but how do you know if thats really the chips inside? How do you even know its not a pic of another companies purchase?
Kingbrite and meijiu havent had too bad reviews but nobody actually knows the bin for real. My recomendation is buying but trying yo leverage diode count, buy 2 boards for thhe job of one, run them on half power with a diy heatsink/alu sheet and you will have better performance than the top bin, for cheaper usually.

Same as per @Blossom21 ; you come as far as you can with internet research by indentifying a couple of decent ali suppliers. There isnt really any more work you can do online. Figure out if you can get a better deal by shopping around for drivers and alusheet locally and push the button either on boards only or a full kit. Kingbrite seems to have 3000k 90cri diodes so that could be a dealmaker for anyone preferring 90cri
 

Blossom21

Active Member
Pics of ledchip packaging doesnt really mean anything. Its a decent gesture but how do you know if thats really the chips inside? How do you even know its not a pic of another companies purchase?
Kingbrite and meijiu havent had too bad reviews but nobody actually knows the bin for real. My recomendation is buying but trying yo leverage diode count, buy 2 boards for thhe job of one, run them on half power with a diy heatsink/alu sheet and you will have better performance than the top bin, for cheaper usually.

Same as per @Blossom21 ; you come as far as you can with internet research by indentifying a couple of decent ali suppliers. There isnt really any more work you can do online. Figure out if you can get a better deal by shopping around for drivers and alusheet locally and push the button either on boards only or a full kit. Kingbrite seems to have 3000k 90cri diodes so that could be a dealmaker for anyone preferring 90cri
Thanks for all the wisdom, i contacted Kingbrite for an inquiry and they messaged me back with the unit price, shipping cost and a trade charge (what is trade charge?), and in the end the total price is even higher than all these added together. I'm a little bit confused how can i fill out the order if the numbers don't even make sense. Also do you just put 100% initial payment and dispatch date 1 day after they receive payment, or need to ask from them directly about those? :-?

Some advice here would be cool, especially if someone has bought from Kingbrite before.
 
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panckage

Active Member
Pics of ledchip packaging doesnt really mean anything. Its a decent gesture but how do you know if thats really the chips inside? How do you even know its not a pic of another companies purchase?
Kingbrite and meijiu havent had too bad reviews but nobody actually knows the bin for real. My recomendation is buying but trying yo leverage diode count, buy 2 boards for thhe job of one, run them on half power with a diy heatsink/alu sheet and you will have better performance than the top bin, for cheaper usually.

Same as per @Blossom21 ; you come as far as you can with internet research by indentifying a couple of decent ali suppliers. There isnt really any more work you can do online. Figure out if you can get a better deal by shopping around for drivers and alusheet locally and push the button either on boards only or a full kit. Kingbrite seems to have 3000k 90cri diodes so that could be a dealmaker for anyone preferring 90cri
Thanks for the reply Rocket Soul. I understand we can't be sure of the bins, I'm ok with that risk. I looked into getting the 2 65w boards as opposed to the 1 qb288 but it is at least 50% more expensive... may as well just go with HLG in that case.

The 3000k 90 CRI you speak of is for the lm561c boards? I am asking because according to Kingbrite's listing as well as the part # in the pic correspond with the 80 CRI LM301h. How did you find out the CRI? I will be happy to test the board I get. I'm planning to get a light meter from amazon. Perhaps a voltmeter on a single diode? Hopefully I will be able to shed some light on whether these diodes fit the advertised specification
 

Rocket Soul

Well-Known Member
Blossom: theres allways charges and shipping etc, pay to play. Havent done kingbrite so not sure what they charge. Meijiu had sone extras last time.

Panckage: last i checked (few days ago) they had 48V 288 boards lm301b 3000k 90 cri in stock. Boards at 27 $ plus charges i guess. These boards are generally fine up to about 50w with no heatsink, a bit more with wome alu backing.

If youre getting one 125w kit for about 150: buy 4 boards only (104 plus charges), some 3 mm alusheet, about 2 inches larger than the boards on all sides or a bigger sheet for 2 boards (cost about 25$ around here) and a meanwell lrs-350-48 (about 40$?) and youre of to the races.
 

panckage

Active Member
Blossom: theres allways charges and shipping etc, pay to play. Havent done kingbrite so not sure what they charge. Meijiu had sone extras last time.

Panckage: last i checked (few days ago) they had 48V 288 boards lm301b 3000k 90 cri in stock. Boards at 27 $ plus charges i guess. These boards are generally fine up to about 50w with no heatsink, a bit more with wome alu backing.

If youre getting one 125w kit for about 150: buy 4 boards only (104 plus charges), some 3 mm alusheet, about 2 inches larger than the boards on all sides or a bigger sheet for 2 boards (cost about 25$ around here) and a meanwell lrs-350-48 (about 40$?) and youre of to the races.
Thanks but 4 boards wouldn't even fit in a 2'x2' tent haha. I'm trying to keep it simple. According to the datasheets the 3000k 90CRI have a flux of only 32-34 while the 80 CRI ones are 34-40. Not sure why one would want the 90CRI ones. I can't imagine the difference in spectrum would make up for the flux loss...
 

10WeekFlushBro

Well-Known Member
Not sure why one would want the 90CRI ones. I can't imagine the difference in spectrum would make up for the flux loss...

edit: so, it would be interesting to compare the YPF to PPF ratio of 90cri to 80. Instead of seeing lm/w and whatever. HPS has the highest YPF: PPF, 0.95, warm white leds are about 0.91 (data from 2014; I think the phosphor coated white spectrum has not changed, the efficacy has of course) (Source)
 
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Rocket Soul

Well-Known Member
Thanks but 4 boards wouldn't even fit in a 2'x2' tent haha. I'm trying to keep it simple. According to the datasheets the 3000k 90CRI have a flux of only 32-34 while the 80 CRI ones are 34-40. Not sure why one would want the 90CRI ones. I can't imagine the difference in spectrum would make up for the flux loss...
When youve seen 90 cri run in flower you would understand. The actual energy/photons is much closer than what you quote. Same amount of 90cri light makes around 15% less lux while actually being more photosynthetically active with more red, for bigger, nicer and faster yields. As youre yn a 2x2 id probably go for a local board, hlg or atreum if youre in the US.
 

panckage

Active Member

edit: so, it would be interesting to compare the YPF to PPF ratio of 90cri to 80. Instead of seeing lm/w and whatever. HPS has the highest YPF: PPF, 0.95, warm white leds are about 0.91 (data from 2014; I think the phosphor coated white spectrum has not changed, the efficacy has of course) (Source)
Forgive my lack area specific knowledge but that graph looks entirely misleading. Both lines should have the approximately the same area below them. Same energy = same area. Well sort of... Shorter wavelengths have more energy but looking at the graph the 90CRI appears to put out more light at almost all energies except a slight bit around 600nm. What the graph is telling us is the 80CRI is more efficient than the 90CRI in producing light which is agreement with the spec sheets I've looked at for the Samsung diodes.

The lines in this graph would have to normalized to their relative efficiencies to make a direct comparison meaningful. This graph is good for intra-comparisons of a diode, but not for inter-comparisons of different diodes.

Which may be what you are saying but I'm not up on the proper terminology haha
 

Rocket Soul

Well-Known Member
@Rocket Soul do you find the extra red speeds things up?
Yes and no. Between 3000k 80cri samsung and bridgelux 2700k 90cri: 90cri looked faster getting out of stretch and having buds forming. No extra stretch. Buds looked a little larger and sticky. But our cue to cut our cultivar, amnesia haze, is final budswell which didnt seem to come any faster but hard to judge anyways. And also, the 2700k would come down together with 3000k anyways so cant really say. But i guess dependng on your criteria you should be able to shorten the grow a bit.
Basicly, it looked good enough for us to invest in all new extra red/90 cri lights for coming builds.

We have also used the vestas middle spectrum, something similar to 3800-4000 90 cri which didnt really show any difference.

To be honest im not sure if it has to do with the extra red, moving the red peak from 600 to 630nm (which means extra far red) or just less blue.

Main difference was probably the results in comparison to power levels: we used about 240w of 12x well spread strips over a 2.5x4 which did better than 480w of 3000k80cri (8 low power qbs) over a 4x4. Actually now that i think about it the boards might have been 2700k 80cri.

Anyways, low K, 90 cri has convinced us with regards to our cultivar. But next setup will be all new kush strains so we will see.
Got a large amount of strips from cutter to try out next: 2000k with near UV, Infra reds, some 5050 strips that can throw down upto 100w of 660nm phosphor coated red each. Just waiting for the go sign.
 

Blossom21

Active Member
I decided to buy 500w in quantum boards, maybe that's enough for a 4x4 tent. Or maybe i could go even further by getting COB's in each corner to achieve more balanced light distribution, overkill/waste of money or a good idea? :eyesmoke:
 

Rocket Soul

Well-Known Member
I decided to buy 500w in quantum boards, maybe that's enough for a 4x4 tent. Or maybe i could go even further by getting COB's in each corner to achieve more balanced light distribution, overkill/waste of money or a good idea? :eyesmoke:
Is that 4 single boards, 4 single kits or a 4 board kit? They will all work for a 4x4 but the 550 clone needs a lot of hanging height.
 
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