4 ft 70 w samsung custom aluminum pcb strips

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ichabod crane

Well-Known Member
bakedPotatoe said:
Wow really..what part can you not understand?
Everything you use in a grow is a cost so if you run ac or co2 thats a cost,no matter what you are still forking out money you just dont see it..
And my point id proven by you not understanding you are paying so it might be a waiting game of a few more weeks to get a decent light set up to start with..
Instead of buying a HPS,then after a couple of grows then wanting to upgrade.
I love HPS but the science and proven grows that are being rolled out,with less watts in the same space or you can just go with the very same watts as your HPS and get better quality.
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There is no reason to attack me because I did not understand you.

My point was that if you can not afford a LED a cheaper light would at least get you started. To many growers think they need the latest greatest thing before they start growing and never start. If all you can afford is a cheap HPS to start that is a good place to start. HPS was used for a long long time to grow.

I agree that LEDs are much better than HPS or DE but still believe that in the right place they may be the better choice.

I think that the strips that the OP posted about are the better choice than the tape. They have a ridgid back already and have over twice the diodes.

And please dont attack people it distracts from the meat of this thread.
 
jonsnow399

jonsnow399

Well-Known Member
ichabod crane said:
There is no reason to attack me because I did not understand you.

My point was that if you can not afford a LED a cheaper light would at least get you started. To many growers think they need the latest greatest thing before they start growing and never start. If all you can afford is a cheap HPS to start that is a good place to start. HPS was used for a long long time to grow.

I agree that LEDs are much better than HPS or DE but still believe that in the right place they may be the better choice.

I think that the strips that the OP posted about are the better choice than the tape. They have a ridgid back already and have over twice the diodes.

And please dont attack people it distracts from the meat of this thread.
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the rigidity makes no difference, and you can get different densities of diodes. Less is more in this case. All I want to know is if the rolls are equal in efficiency to the pcb's.
 
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ichabod crane

Well-Known Member
jonsnow399 said:
the rigidity makes no difference, and you can get different densities of diodes. Less is more in this case. All I want to know is if the rolls are equal in efficiency to the pcb's.
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How do you plan to hang a flexible roll? You need something to attach it to. The strip comes with that already attached so you need nothing to stick it to just a frame.

The strips and the tape have the same diodes so they will run the same if the same current and voltage are applied to them.
 
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ichabod crane

Well-Known Member
The number of diodes does matter. You will need a shit ton to do a grow. The more you have the lower you can drive them and the better your efficacy will be.
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
jonsnow399 said:
the rigidity makes no difference, and you can get different densities of diodes. Less is more in this case. All I want to know is if the rolls are equal in efficiency to the pcb's.
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me too..and you do not need to get too techy[though that is cool]

just get em together add the wattage..

and take some sort of par or lumen test at some relative distance

the aluminum on a pcb led strips helps for making bars and not need something to attach them too..and cooling as well
but if the reel/tape of leds kicks out the photon's then they are on track..

then of course ..grow something with them
 
jonsnow399

jonsnow399

Well-Known Member
ichabod crane said:
How do you plan to hang a flexible roll? You need something to attach it to. The strip comes with that already attached so you need nothing to stick it to just a frame.

The strips and the tape have the same diodes so they will run the same if the same current and voltage are applied to them.
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The roll can be put on anything you want, extruded heatsinks or aluminum plate. If you need more diodes just use more strips.
 
I

ichabod crane

Well-Known Member
jonsnow399 said:
The roll can be put on anything you want, extruded heatsinks or aluminum plate. If you need more diodes just use more strips.
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This is what I was getting at. The strips already have a hard base attached to them. The more tape you use the more hard base to attach them to you will need. That is why I would prefer the strips.

But if you have something to attach the tape to then that may work better for you. I am not in your grow so I would not know if you do. If they work better for you go ahead and use them.
 
jonsnow399

jonsnow399

Well-Known Member
ichabod crane said:
This is what I was getting at. The strips already have a hard base attached to them. The more tape you use the more hard base to attach them to you will need. That is why I would prefer the strips.

But if you have something to attach the tape to then that may work better for you. I am not in your grow so I would not know if you do. If they work better for you go ahead and use them.
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The hard strips MUST be attached to a heat sink, unless you are planning to put a fan on them or run extremely soft. I am running some now on the Heatsinkusa's 2 inch extrusion and they get warm at 25 watts apiece.
 
PilouPilou

PilouPilou

Well-Known Member
VegasWinner said:
So I found a nice Samsung supplier on alibaba also in Hong Kong China, his name is Roget he is with Mofue Technology and they make Constant Current and Constant Voltage lm561C S6 bin strips. I got my first order in of constant voltage 5m strip 5000k 80cri and waiting on 3500k 90cri and 5000k 80-cri constant current 70led/m at 5m each for a total of 10m of mixed 3500K/5000k.
https://mufue.en.alibaba.com/?spm=a2700.8443308.0.0.M5Cij7
namaste
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Hello @VegasWinner! I checked your link and it seems to be a good offer.. good link! ;) If I choose the 120 led/meter strip to make a light made with 8 strips of 50cm (60LED*8=480 LED @65mA ~80W)... which driver could you advice to me to run them? I wrote 65mA because it is the value used by Samsung on his site but maybe for a strip it is different... Thank you in advance!
 
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I

ichabod crane

Well-Known Member
OLD MOTHER SATIVA said:
jonsnow399 said:
The hard strips MUST be attached to a heat sink, unless you are planning to put a fan on them or run extremely soft. I am running some now on the Heatsinkusa's 2 inch extrusion and they get warm at 25 watts apiece.
Click to expand...

the aluminum on a pcb led strips helps for making bars and not need something to attach them too..and cooling as well
but if the reel/tape of leds kicks out the photon's then they are on track..

then of course ..grow something with them
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What strips and what current are you running them at?
 
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ichabod crane

Well-Known Member
PilouPilou said:
Hello @VegasWinner! I checked your link and it seems to be a good offer.. good link! ;) If I choose the 120 led/meter strip to make a light made with 8 strips of 50cm (60LED*8=480 LED @65mA ~80W)... which driver could you advice to me to run them? I wrote 65mA because it is the value used by Samsung on his site but maybe for a strip it is different... Thank you in advance!
Click to expand...
Before you decide what to run them at you need to decide what efficacy you want.
 
I

ichabod crane

Well-Known Member
jonsnow399 said:
running them with a hlg 185h, dunno the current, killawatt say 215 watt from the wall, deduct 10 percent for the driver, say 200 watts rounded for 8 strips makes around 25 watts per strip
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What is the amps of that driver? It should say on it what it is.

And what kind of strip?
 
I

ichabod crane

Well-Known Member
jonsnow399 said:
48v, 3.9 amp I think they are 561b's
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561b are not what these strips are. They are 561c so not really a good comparison.

For example run at .07 amps at the highest ratings for each(worst chips in the group) with same CRI and 3000K each chip runs at:

561c runs at 190.2 lm/W
561b runs at 152.3 lm/W

That is a big difference in waste heat between the two.
 
jonsnow399

jonsnow399

Well-Known Member
ichabod crane said:
561b are not what these strips are. They are 561c so not really a good comparison.

For example run at .07 amps at the highest ratings for each(worst chips in the group) with same CRI and 3000K each chip runs at:

561c runs at 190.2 lm/W
561b runs at 152.3 lm/W

That is a big difference in waste heat between the two.
Click to expand...
watts are watts, the strips must still be attached to a heatsink. I have qb's and they need a heat sink too.
 
I

ichabod crane

Well-Known Member
PilouPilou said:
hi! the same efficacy than 65mA (3500K)... around 200lm/W I think
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At 65 ma that is only 50 watts. Is that enough for your grow area? At 35 watts per square foot and one meter long you would only be cover 3.75 inch wide. So a area 39 inches by 4 inches roughly.

I have to go for several hours maybe some one else can jump in while I am gone.
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
jonsnow399 said:
The hard strips MUST be attached to a heat sink, unless you are planning to put a fan on them or run extremely soft. I am running some now on the Heatsinkusa's 2 inch extrusion and they get warm at 25 watts apiece.
Click to expand...
600 w with 15 x 70w strips[1050 w]

there are fans in the room..you'd be surprised how much that helps..
 
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