The Chinese Quantum Board Knock Off Builds

Rocket Soul

Rocket Soul

Well-Known Member
Rocket Soul

Rocket Soul

Well-Known Member
FlakeyFoont said:
When I made up a light w/2x 288's, I daisy chained, and only the first lit up.

Someone helped me troubleshoot that, and also said that all the wires coming out of the powered wagos to the lights needed to be exactly the same length.

It's easy with 2x boards.

If that is important, Its.always.420 might want to take it into consideration.
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Thats technicly correct but if you follof the general awg advice given around here you should be fine with a little difference. The added cable adds resistance to the circuit and if theres a lot rhe 2 boards run at different voltage. But the difference would be so minimal that your more likely to have different voltage in 2 boards due to manufacturing. I wouldnt worry about anything less than foot, foot and a half.
 
its.always.420

its.always.420

Well-Known Member
FlakeyFoont said:
When I made up a light w/2x 288's, I daisy chained, and only the first lit up.

Someone helped me troubleshoot that, and also said that all the wires coming out of the powered wagos to the lights needed to be exactly the same length.

It's easy with 2x boards.

If that is important, Its.always.420 might want to take it into consideration.
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Good advise, something most peeps (including meself) wouldn't think of. They're all within a few inches...good enough?


Is it possible to test the voltage at each board with a multimeter?
 
Rocket Soul

Rocket Soul

Well-Known Member
WeedSexWeightsShakes said:
For 16 lm301b with 660s she said $2200ish.
$1674 for 12.
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If youre a bit strapped for cash i would go For lm561c and run it at 150. If iiremember the priceppoints rightr you get almost 2 lm561c (75$ eache for 1 lm301b boards (125ish $). We tried the lm301b boards and the difference at 250 w was very marginal. Infact of all the configs and spectrums of similar wattage we tried the one that really stood out was the soft driven boards close to eachother. Like around 5 inches between boards at 150 max. Even at 100w we had good intensity. At 150w about 8-12 inches we had great intensity and nice and even spread. Good intensity even at 24 inches.
My recommendation when dealing with the china boards is to leverage diode count. Just get crazy amount of diodes, keep the boards without heatsinks (this will force you to run them softer than you would otherwise) and try to make sure you have board over 70% of your cannopy.
Id suggest 3 boards per 4x4, on a hlg480.
 
WeedSexWeightsShakes

WeedSexWeightsShakes

Well-Known Member
Rocket Soul said:
If youre a bit strapped for cash i would go For lm561c and run it at 150. If iiremember the priceppoints rightr you get almost 2 lm561c (75$ eache for 1 lm301b boards (125ish $). We tried the lm301b boards and the difference at 250 w was very marginal. Infact of all the configs and spectrums of similar wattage we tried the one that really stood out was the soft driven boards close to eachother. Like around 5 inches between boards at 150 max. Even at 100w we had good intensity. At 150w about 8-12 inches we had great intensity and nice and even spread. Good intensity even at 24 inches.
My recommendation when dealing with the china boards is to leverage diode count. Just get crazy amount of diodes, keep the boards without heatsinks (this will force you to run them softer than you would otherwise) and try to make sure you have board over 70% of your cannopy.
Id suggest 3 boards per 4x4, on a hlg480.
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How did you hang all the boards? Did you make a frame or are they sturdy enough themselves? Is there a big difference in going with boards that have the extra reds? Rita said the lm561c don’t have reds but the lm301b do. Thanks for the info!

My other option would be going with 16 qb96s. They may end up being similar prices.
 
TreeWalker

TreeWalker

Member
This is the light I was looking at: (User not allowed to post links)
From Shenzhen Meijiu Lighting Co., Ltd. product number
60798814902

I filled out a request and they claim the shipping is $250.
Does that sound right? That is deal breaker for sure. Opinion on this kit?

Ugh: I cant post links: It is alibaba
/product-detail/Best-seller-shenzhen-led-grow-lights_60798814902.html

Thanks
 
Rocket Soul

Rocket Soul

Well-Known Member
WeedSexWeightsShakes said:
How did you hang all the boards? Did you make a frame or are they sturdy enough themselves? Is there a big difference in going with boards that have the extra reds? Rita said the lm561c don’t have reds but the lm301b do. Thanks for the info!

My other option would be going with 16 qb96s. They may end up being similar prices.
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Better frame for flowering. You can hang them by them selves but you need to be a bit crafty: if you just hang them sttaight from the corners they will defo sag. You can do it by taking a line thru the corner and another hole and it works decent. Thats what we do for 1 per tray vegg setups and i works ok. For flower we framed them with a small space between, each board + space is about 16 inches.

For the frame: get some L-frame or T-frame, drill and stick together so that you can attach the boards on the bottom. Its easy peasy. We used wing nuts for attachment.
 
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WeedSexWeightsShakes

WeedSexWeightsShakes

Well-Known Member
Rocket Soul said:
Better frame for flowering. You can hang them by them selves but you need to be a bit crafty: if you just hang them sttaight from the corners they will defo sag. You can do it by taking a line thru the corbera and another hole and it works decent. Thats what we do for 1 per tray vegg setups and i works ok. For flower we framed them with a small space between, each board + space is about 16 inches.

For the frame: get some L-frame or T-frame, drill and stick together so that you can attach the boards on the bottom. Its easy peasy. We used wing nuts for attachment.
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Great info man! Happen to have any pics? I have probably a month or so till I start this project. Building a grow room in a 10x11 room. Going to run 2 4x8 flood and drain tables.
You think the 301b with extra reds are worth the price increase? I have the funds but also don’t want to spend it isn’t really worth it, ya know? In the process of getting a house and having a new baby coming at the end of April I need to start watching my spending a little more lol.
 
Rocket Soul

Rocket Soul

Well-Known Member
On the diodes, red sup etc. I went the way of buying white light in cheap deals like this and leveraging diode count. The way these pricepoints and shipping to here are it seems a better deal for me just buying lm561c in bulk and run it close to nominal than real qbs and run them harder. For red i perfer buying from more reliable dealers. I did some rough calculations on one of this epi-red sup boards and it looked like the reds where giving about 30% light than the whites. We got one of these lm301b + red boards in and will be trying it side by side.
 
TreeWalker

TreeWalker

Member
Moflow said:
Is that the light ?
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Yes that is it. I also asked if the 2 boards could be side by side not end to end and Mandy responded yes with pictures on separate heat sinks. I will just paste the email here without URL's

I am Mandy from Meijiu lighting, nice to meet you,

As for your inquiry, I recommend you buy 2pcs separate heatsinks instead of the long heatsink, the full kit like attached picture,

This is our newest and most popular led grow kit use samsung lm301b leds,Details as below:

288 v2 FOLUX-240H-2-326(one driver drive double board), it contains:
1.2pcs 288 V2 board(Samsung lm301b 3000K leds),
2.1pc dimmable Meanwell driver HLG-240H-48AB,
3.2pcs separate heatsinks, (326X195X10mm)
4.1pc dimmer switch and remote,
5. hanger, hang wires, connectors, wires, plug and screws,

The best price is USD174.95/set for alibaba March EXPO promotion.
total cost for 1 kit ship to USA is USD246.67,it include shipping cost and alibaba charge.

How do you think of it and will I arrange them for you?if any questions,pls let me know.

Hope to hear of you soon.
Best Wishes,
Mandy

Shenzhen Meijiu Lighting Co., Ltd.
Mob: +86 185 6567 5508 Tel: +86 0755 23270209
Skype:xiaomanyun220 E-mail:
Add: F4/B3 , Dong'long'xing Industrial Park , Da'lang , Long'hua Town,Shenzhen , 518100
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Perhaps she meant total of 246.67? Opinions on the light and alternatives is welcome.
 
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Moflow

Moflow

Well-Known Member
TreeWalker said:
Yes that is it. I also asked if the 2 boards could be side by side not end to end and Mandy responded yes with pictures on separate heat sinks. I will just paste the email here without URL's



Perhaps she meant total of 246.67? Opinions on the light and alternatives is welcome.
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Sounds like 246 67 total. I couldn't see 174 for light plus 246.67 post n package.
 
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