"LM561C" Boards and Strips from Bright and thoughts on dealing with Shenzen mfg's

Grower · Fri May 11, 2018 8:49 pm

chancewokc wrote: ↑
Fri May 11, 2018 5:48 pm
This is the first Forum I have ever been involved in so I don't know how all this works. But that wiring diagram looks pretty easy to follow. I just don't know if the LED chips that are on the board other than the Samsungs are worth it all I know is everybody wants Samsung boards now.

how can you be sure these white leds are made from Samsung?

chancewokc · Fri May 11, 2018 11:27 pm

I can't but everyone here is always out when I can afford to buy quantum boards. So I feel like Alibaba is my only option.

Osash78 · Sat May 12, 2018 9:46 am

chancewokc wrote: ↑
Fri May 11, 2018 11:27 pm
I can't but everyone here is always out when I can afford to buy quantum boards. So I feel like Alibaba is my only option.

Naah... A DIY strip is an option too

For 150$ of strips + driver, u can do perfect lightning for an 4x4...

unkle_psycho · Sat May 12, 2018 2:55 pm

When I had a look at QB prices on alibaba, I felt they were only about 20-30% cheaper then f-series at best... Comparing price per diode. I was looking at 25pc of f-series on digikey.
For me the smaller form factor is already a benefit, and knowing exactly what you got has to be worth something too.

Finally I changed to vesta which was way cheaper then the f-series, I doubt alibaba QB's can beat their price at all.

unkle_psycho · Sat May 12, 2018 2:58 pm

9 x 56cm Vesta's @ nominal, 50w each = 450w = about 72euros.

chancewokc · Sun May 13, 2018 12:20 am

My issue with all those places is they have a million chips and I don't know which one to order

unkle_psycho · Sun May 13, 2018 1:51 am

The choice is pretty easy if you know what you are after... Par per $, lumen per watt, or diodes per m2... What are you trying to optimize? Any special needs like high CRI or intensity would make the decision even more simple.

sdfoster22 · Sun May 13, 2018 2:58 am

chancewokc wrote: ↑
Sun May 13, 2018 12:20 am
My issue with all those places is they have a million chips and I don't know which one to order

Here is a pretty good guide to get you started
http://ledgardener.com/diy-led-strip-bu ... bridgelux/

chancewokc · Sun May 13, 2018 3:24 pm

At the moment I am trying to get as much light and penetration for as little $ as possible

Grower · Sun May 13, 2018 9:08 pm

unkle_psycho wrote: ↑
Sat May 12, 2018 2:55 pm

knowing exactly what you got has to be worth something too.

This is a reason I went with Bridgelux eb2 instead of alibaba boards