4 ft 70 w samsung custom aluminum pcb strips

OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
ok i thought you meant board ..you mean the 70 w strips?

still "testing" it...right now at 12.5 mm distances..over non virtual plants

i am using two 6" x 22" 250 w panels over 2 x 4...for my seedlings

each powered @120 w using hlg-240-48..
 
Baudelaire

Baudelaire

Well-Known Member
OLD MOTHER SATIVA said:
i
i am noticing cumulative effect of the strips..
at a distance we are not in serious umol land like under the 6 x 22 panel
i can see this grid getting close to the canopy and flowering 4.5 x 4.5 ft..
which adds a fair bit more real estate..but it does dilute the photons..with the 12. mm spacing
and hopefully keeping it 6" from the tops will help
will update when i hook up the 240 and get up to 600w

well said Baud..
the even [and diluted] spread may or may not be the best thing to do..
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Seems to me its just a matter of dialing in the right intensity via the spacing and output of the strips. One of the reasons I'm looking forward to someone building out a strip grid with the Samsung F-Series strips, which use double rows of the 561C chip. They produce a near-4 ft length version to retrofit 4-ft flouro light bays, hence to length I believe.

Running close to the canopy seems right, but again as you dial in the intensity that will probably stabilize around the 1-2 ft range because you'll want the penetration you get with COBs and HIDs, so intensities will increase to meet the penetration requirements to produce good product well down the plant, which will in turn require the lights be raised to prevent bleaching. But the even distribution of photons will remain.

I notice the Fluence SPYDR rack https://fluence.science/technology/spydr/
posts their output metrics as measured 6 inches from the lamp.

Am I looking at a northern pike on the line?

-b420
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
the 10 x70 w 1170 mm strips on the 600w meanwell 60 w each and spaced 4.5 " seem to have decent par watts at 6"..

however ..the next incarnation of this grid will be :

4ft x 3ft and 15 x 70 w strips spaced 2.25" apart
and powered by the same 600w [ 40 w] each strip

.. interested in seeing the cumulative effects of 50% more leds ..and the resultant efficiency

...they surely will not need heatsinks
 
Baudelaire

Baudelaire

Well-Known Member
Looks nice. Have you measured or estimated your lumens/meter yet on the second rig?

Used to fill my stringer with northerns every summer fishing Blackduck Lake near Bemidji. Walleyes were my preference though.

-b420
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
i took the strip panel and did some quick measurements with the hydrogalaxy par meter

600w 3ft x4ft panel at 12"

basically it was between 440 and 520.umols..i saw 400 near the edges and the highest was in the middle

i will be running it over plants next time..i am thinking @6" it should be good enough

ok here is another bit:

when the whole 15 strips were hooked up to one lead there was drop off ,,

when i attached both driver leads one on 8 and one on 7..they were basically the same.

i will hook the 10 strip the same way next time i am there.
 
Yodaweed

Yodaweed

Well-Known Member
OLD MOTHER SATIVA said:
i took the strip panel and did some quick measurements with the hydrogalaxy par meter

600w 3ft x4ft panel at 12"

basically it was between 440 and 520.umols..i saw 400 near the edges and the highest was in the middle

i will be running it over plants next time..i am thinking @6" it should be good enough

ok here is another bit:

when the whole 15 strips were hooked up to one lead there was drop off ,,

when i attached both driver leads one on 8 and one on 7..they were basically the same.

i will hook the 10 strip the same way next time i am there.
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That seems really low, at 15 inches a 1000w hps has about 2000 umol , maybe good veg light?

Source:http://growace.com/blog/the-best-hps-grow-bulb-test-comparing-6-brands-on-par-output/
 
Yodaweed

Yodaweed

Well-Known Member
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visajoe1

visajoe1

Well-Known Member
light output seems just all around low on these strips. its certainly a good idea, but a flouro does basically the same for a lot less work and money. these samsung 561c strips are only about $4/meter. Not exactly high end materials.

Not to hate on your idea Sativa, I love business, but you need to rethink this idea. How is this better than what is existing?

instructions to build a 561 strip light..
http://ledgardener.com/samsung-lm561c-build-getting-started/
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
hi yoda and yer sunny hps face..

i bought my first HID in 1979

1.at 6" they will be awesome ppf..there is no need to run them at 12"..there is virtually no heat compare to hid

and no reason i cannot run them at 4"..which should be nuts and it covers a large area evenly.

butnithink 6" should do fine

2. i checked out those 12/24 v tape strips already..they look cool go for it dude!

3. done fluro's..nah
 
R

Ryante55

Well-Known Member
Yodaweed said:
400-500 umol is less than a 600w hps, it's also less than a 315 cmh....1000w hps is like 4-5 more powerful at 3 inches higher testing area(we are talking SE lights not DE, DE difference would be greater).

Here's a chart of a 315 watt cmh , it's testing around 600-750 in the middle @ 24 inches (he tested at 12).

http://growershouse.com/blog/cmh-315w-lamp-comparison-test-data-review/
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The cmh drops below 300 after 2 feet. And what does distance from canopy have to do with anything? I'd rather not have to raise my light to 3 feet to get a useable amount of light. It's cool that your an hps fanboy but please present some valid information.
 
Yodaweed

Yodaweed

Well-Known Member
Ryante55 said:
The cmh drops below 300 after 2 feet. And what does distance from canopy have to do with anything? I'd rather not have to raise my light to 3 feet to get a useable amount of light. It's cool that your an hps fanboy but please present some valid information.
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Distance to testing area is one of the biggest factors, the closer the light, the higher the output, it's a law called the law of the inverse square. CMH lights can be run MUCH closer than 24 inches ive had my plants nearly touching them. Furthermore i have provided more information than you, have since you have provided none other than your opinion.
 
Yodaweed

Yodaweed

Well-Known Member
OLD MOTHER SATIVA said:
hi yoda and yer sunny hps face..

i bought my first HID in 1979

1.at 6" they will be awesome ppf..there is no need to run them at 12"..there is virtually no heat compare to hid

and no reason i cannot run them at 4"..which should be nuts and it covers a large area evenly.

butnithink 6" should do fine

2. i checked out those 12/24 v tape strips already..they look cool go for it dude!

3. done fluro's..nah
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I'm not trying to bash you at all, i just think those are lowish light levels for growing cannabis, it looks like it would be great for growing trays of greens. Also i'd like to explain a basic part of the grow room that can help you tremendously, 600w of any light source is equal to 600w of another in heat, all watts are created equal, this is a law called the first law of thermodynamics.
 
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R

Ryante55

Well-Known Member
Yodaweed said:
Distance to testing area is one of the biggest factors, the closer the light, the higher the output, it's a law called the law of the inverse square. CMH lights can be run MUCH closer than 24 inches ive had my plants nearly touching them. Furthermore i have provided more information than you, have since you have provided none other than your opinion.
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When you move closer you lose light spread... Still not making a valid point. If 500 isn't enough to grow then a cmh has a 2x2 flowering footprint
 
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