New style Samsung LM561C Board

Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
I actually agree with most what you are saying. And indeed most of the time the quality and the guarantees from China is going to be poor to non-existent.

So it really goes back to what I was saying earlier, that generally you get what you pay for. And although we disagree on the ethics of copying, seems we agree on everything else.

And no I have never bought a HDMI cable, I do not even own a Tv, I am just an asshole with a laptop :lol:
 
jonsnow399

jonsnow399

Well-Known Member
Johnnycannaseed1 said:
I hear ya, but I feel you have missed a major point, that is someone or two worked hard to create that original QB.

In all likelihood, they probably went to China sat down with the manufacturer with a completed MTO, then gave them a BOQ and BOM, along with a step by step process of how to manufacture, check and store the original QB's to ensure rigid manufacturing and quality control processes are in place.

How many hours do you think were spent in the planning, testing, and development stages before the first QB was ever made?

Like you say pcb boards have existed for years, and during all that time guess what. Not one QB in sight, in all that time.

Not until the rip off merchants clocked onto what a great product it was, and probably started selling the QB's right out the back door as they normally do. All the while profiting off some else's hard-earned hours. That same someone who probably showed them how to manufacture the board to that standard of quality. And this is how they are repaid. Now hardly fair, is it?

Especially as an argument could be made that this iteration of the Lm561 board would not be in existence had it not been for its original creator.

QB's have blatantly been ripped off. But I guess until you have spent many a long hour creating your own product only to then watch as it too is ripped off, you are not going understand how that feels, nor how wrong it is to do such a thing.

It is so wrong as RIU members to knowingly contribute to the purchase of a product that has been ripped off, by a manufacturer that tried to put the original creator out of business just because he had the manufacturing capability to do so. By simply increasing the volume of production in order to drive the price down. Talk about biting the hand that fed you.

Where's the RIU community spirit and community support in any of that?

But I guess different strokes for different folks and all that, screw morals, so long as it's cheap that's all that matters riiight!
Click to expand...
Getting ripped off by copycats isn't unique to HLG. If you don't have your stuff patented you can expect it. As soon as a new, hot item starts selling there will be knockoffs, every time.
 
PhenoMenal

PhenoMenal

Well-Known Member
Just a quick question about the dimmer wires ... is it ok (ie SAFE) that they're just "hanging around exposed"?

I'm running @ 100% as potentiometers havent arrived yet, it's working fine but I'm just curious about safety - what will happen if I touch one or both of the dimmer wires? or if they accidentally get a bit of foliar spray on them? AC electricity scares me a bit!

My dimmer wire is just hanging around, with exposed ends, sorta like in this pic:



ps. today I moved the driver, instead of sitting on the heatsink it's now hanging above (using one of the screw holes already in the driver frame) ... much better - now the heatsink is 100% free to do its thing, and do so without slowly cooking the driver. I feel better.
 
PhenoMenal

PhenoMenal

Well-Known Member
Viceman666 said:
I can already predict you what's gonna happen next. New LEDs chips with better efficiency than LM561C
Click to expand...
yep Samsung already have been mass-producing LM301B since June 2017, which are 220 lumens/watt, might be the next step for QB!?

0.3w instead of 561C's 0.5w though so i guess more will be needed per board (assuming 0.5w 561C's = 200lm and 0.3w 301B's = 220lm you'd need 506 301B's to equal the same lumens as a QB-304 ... slightly more efficient yes but i'd imagine the extra upfront cost would be significant).

Either way if they do go that way maybe it'll help bring down prices of LM561C boards
 
Last edited:
sharptater

sharptater

Well-Known Member
Hello everyone. I bought 6 288 boards from eBay. Planning to make a two board veg light for a 2x4 and a four board light for a 4x4 to replace a 600w hps. Need help picking drivers. Boards voltage is 48-60v 2400ma Max. I believe a hlg 185h c1400a will work for the two boards for veg light, but not 100% sure. The flower light I would like to run between 400-500w. Is there a single driver I could use? Or would two of the hlg 185h c1400a on two boards a piece work?
 
ANC

ANC

Well-Known Member
The 4 for flowering I would put on a 320W driver for efficiency and to keep them cooler.

180 to 200W should be enough for the 2 left over strips.
 
Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
DankaDank said:
Meanwell- Chinese
Cree - Part Chinese
Bridgelux- Chinese
Molex - Chinese
BJB- Chinese
Osram- Part Chinese
Ledil- Finnish but mostly produced in China
Citizen- Apparently Chinese too.
Samsung- Korean but LEDs are probably made in China.

China has some of the best and worst quality in the world.
Click to expand...
True but in those cases, you can guarantee that they have been set up under the strict guidance and rigid framework of the original parent company.i.e corner cutting not allowed and standards must be higher than your typical Chinese factory set-up
 
nc208

nc208

Well-Known Member
PhenoMenal said:
yep Samsung already have been mass-producing LM301B since June 2017, which are 220 lumens/watt, might be the next step for QB!?

0.3w instead of 561C's 0.5w though so i guess more will be needed per board (assuming 0.5w 561C's = 200lm and 0.3w 301B's = 220lm you'd need 506 301B's to equal the same lumens as a QB-304 ... slightly more efficient yes but i'd imagine the extra upfront cost would be significant).

Either way if they do go that way maybe it'll help bring down prices of LM561C boards
Click to expand...
Just to clarify the lm561c is also 0.3w not 0.5w like you posted above. The specs on the lm301b and lm561c are identical just the lm301b are more powerful. You actually need less of them versus more of them to equal a lm561c.
 
PhenoMenal

PhenoMenal

Well-Known Member
nc208, damn how did i screw that up :( thankyou for the quick correction!

... and ... that makes it even better then!!! surely 301B's will take over 561C's then!?
 
ANC

ANC

Well-Known Member
I'd say 4 strips are maybe a bit light for that space. I use a minimum of 3 over a 2 x 4 tray.

You could possibly use all 6 for the flowering space and make another plan for veg lights.

You can already get 301s off Alibaba, how real they are, I don't know.
 
You must log in or register to reply here.
Top