New style Samsung LM561C Board

[see4]

Wrong! A well designed PCB covers in this case almost the entire surface.

This well designed PCB has less than half the board covered in copper. It has 800 watts being pushed through it 24 hours a day.

Why does it need to be completely covered for diodes to be "well designed"?

 

[ANC]

Yeah, I wouldn't buy the populated board from China, maybe some of COBkits or HLG's own supply, but not taking my chances with those guys again.

This is the kind of shit I have seen come out of China.


It will be covered as the traces also acts as heatsinks. There are tables and formulas that will tell you how much thermal performance at whatever copper thickness. It is how it is done for many components on a board. The motherboard has all its big jobs done in the chips with forced cooling.

 

[see4]

Every trader has to charge a premium of around 120-150% on the purchase price if he wants to pay his expenses, taxes, employees and so on. This is normal and no rip-off.
You guys need to learn how trading works.
You could also order your jeans in the Far East and get them for a fraction of the price(5-15 instead 100-200$).
Would you do that you could save much more money!?!

Buying something for $20 then selling it for $75 is not 120% markup. It's closer to 300%
Where do you think most everything is made dude? Certainly not the United States. A very small fraction of things are made in the US.
"Far East", I haven't heard that one in a while. Do you refer to the people as "Oriental" or perhaps, "yella"?

 

[ANC]

You can't afford stuff made in America, that is for the 1%.
Hell, your fast-food workers earn more in an hour than a farmworker here does in a day of working the soil in 110-degree weather.

 

[Victor6634]

@see4 Not for nothing but do you have a personal issue with HLG or the other vendors on here because every thread you have been in all you do is bash vendors do you even own any of their products have tested any of there products do you even have any experience in growing ? Seems to me no matter what thread your in all you do is disrespect people remember the golden rule if you have nothing nice to say then say nothing at all.

 

[see4]

Yeah, I wouldn't buy the populated board from China, maybe some of COBkits or HLG's own supply, but not taking my chances with those guys again.

This is the kind of shit I have seen come out of China.


It will be covered as the traces also acts as heatsinks. There are tables and formulas that will tell you how much thermal performance at whatever copper thickness. It is how it is done for many components on a board. The motherboard has all its big jobs done in the chips with forced cooling.

Right, so putting a "chinese knockoff" PCB on a heatsink that covers the entire surface area... would "have all its big jobs done in the 'chips' with forced cooling".

So then really the question comes down to are the diodes real and is the copper traces allowing for all the diodes to get a current.

 

[see4]

@see4 Not for nothing but do you have a personal issue with HLG or the other vendors on here because every thread you have been in all you do is bash vendors do you even own any of their products have tested any of there products do you even have any experience in growing ? Seems to me no matter what thread your in all you do is disrespect people remember the golden rule if you have nothing nice to say then say nothing at all.

No, I have nothing personal with HLG. None at all. Their products seem to be great, everyone raves about them. And that's great! Which is why I sourced the parts myself for a fraction of the cost... you know... DIY.

I personally don't want to pay 300%+ markup on a "DIY kit" when I can literally "do it myself" for a third of the price.

Not sure why that's so difficult to understand.

 

[ANC]

C4 makes valid points but with the diplomacy of a 23-year-old.

Life is always more complex than what we take things for.
There are many unseen things that goes into the cost of a product like this.
There is buying the design software, doing prototyping, scrapping of failed experiments and parts that did not live up to datasheet hype.
Then if like these guys this falls outside of your real field of expertise, you may still have to hire people to do the same jobs again to have it be certified as safe.
Then pay for 3rd party testing, warranty replacements ect.... I've done it as a hobby. Once you start people want answers from you, day and night.

 

[Victor6634]

No, I have nothing personal with HLG. None at all. Their products seem to be great, everyone raves about them. And that's great! Which is why I sourced the parts myself for a fraction of the cost... you know... DIY.

I personally don't want to pay 300%+ markup on a "DIY kit" when I can literally "do it myself" for a third of the price.

Not sure why that's so difficult to understand.[/QUOTE

Ok then you bought the boards from China get it built and compare them with their board hopefully you won’t burn the house down with them cheap boards

 

[Victor6634]

C4 makes valid points but with the diplomacy of a 23-year-old.

Life is always more complex than what we take things for.
There are many unseen things that goes into the cost of a product like this.
There is buying the design software, doing prototyping, scrapping of failed experiments and parts that did not live up to datasheet hype.
Then if like these guys this falls outside of your real field of expertise, you may still have to hire people to do the same jobs again to have it be certified as safe.
Then pay for 3rd party testing, warranty replacements ect.... I've done it as a hobby. Once you start people want answers from you, day and night.

He has no respect or consideration

 

[see4]

Ok then you bought the boards from China get it built and compare them with their board hopefully you won’t burn the house down with them cheap boards

Dude, where do you think the vast majority of the HLG boards came from? I will give you a hint... China.

 

[see4]

He has no respect or consideration

Respect for whom? Consideration for whom?

 

[ANC]

Right, so putting a "chinese knockoff" PCB on a heatsink that covers the entire surface area... would "have all its big jobs done in the 'chips' with forced cooling".

So then really the question comes down to are the diodes real and is the copper traces allowing for all the diodes to get a current.

Put down the bong and back away.

The pads around a component are critical to high power or heat sensitive parts. there are no free lunches.
If they were not so important the QB boards would have all the LEDs as close as possible together to act as a point source (and save a fucktonne on manufacturing).

 

[Victor6634]

Dude, where do you think the vast majority of the HLG boards came from? I will give you a hint... China.

Doesn’t matter where they came from what matters is your lack of respect or consideration for the work research design time testing q.c and excellent customer service . Who here or anywhere else did what they do or are doing

 

[see4]

C4 makes valid points but with the diplomacy of a 23-year-old.

Life is always more complex than what we take things for.
There are many unseen things that goes into the cost of a product like this.
There is buying the design software, doing prototyping, scrapping of failed experiments and parts that did not live up to datasheet hype.
Then if like these guys this falls outside of your real field of expertise, you may still have to hire people to do the same jobs again to have it be certified as safe.
Then pay for 3rd party testing, warranty replacements ect.... I've done it as a hobby. Once you start people want answers from you, day and night.

Huh? I'm not getting into the business of selling LED lights... I'm in the middle of closing a nearly 3 million round of funding. LED light sales are the least of my concerns.

I sourced everything myself, because that is what DIY is. And I'm doing it as a fun thing to do.

Diplomacy of a 23 year old? You're the one assuming things about my argument which are simply not true.

 

[Victor6634]

Respect for whom? Consideration for whom?

For HLG and their reasarch development and hard work

 

[see4]

Doesn’t matter where they came from what matters is your lack of respect or consideration for the work research design time testing q.c and excellent customer service . Who here or anywhere else did what they do or are doing

So your argument is now that I don't QC my products? And that HLG does? Ok. Cool. I'm glad they do. QC is important. To me, it's not worth $40 a board though. You do, and that's great. What about the 300% markup they charge on Meanwell drivers and heatsinks?

Again, I'm not in the business of LED lights, I wanted a DIY solution. I sourced the parts myself. And I paid a third of what you paid.

 

[ANC]

I rest my case. Do you know the story of Don Quixote ? It isn't really a story about a man attacking imaginary dragons.
But, rather a story of how a man who wants to see dragons, finds them everywhere. Your mind is a prison mate.
It draws everybody for you as adversaries, regardless if it is based in reality.

 

[see4]

For HLG and their reasarch development and hard work

No. I respect the work HLG does. They obviously provide a great product. And I get that they double check the boards that get shipped to them before they reship them back out to customers. To me, I don't think that's worth $40 a board. To you it does.

 

[see4]

I rest my case. Do you know the story of Don Quixote ? It isn't really a story about a man attacking imaginary dragons.
But, rather a story of how a man who wants to see dragons, finds them everywhere. Your mind is a prison mate.
It draws everybody for you as adversaries, regardless if it is based in reality.

What does that have to do with the price of apples in India?
Stay on topic, sport.