Inexpensive LED'S for a small grow

stardustsailor · Mar 15, 2014

double fan idea elec idea 2 sidetop xray w.jpg

double fan idea elec idea 2 sidesm xray w.jpg

lax123 · Mar 15, 2014

beautiful looking

stardustsailor · Mar 15, 2014

lax123 said:
beautiful looking

Guod-Stardustsailor led panels was one of the most demanding led projects ...

It contained a lot of things ..
3D modelling,airflow calculations ,pcb printing , computer design and making of metal core pcbs ,building PID reflow system,reflow the leds and quite a lot more ...
But you know what ?
I trust that I can DIY-build whatever I wish ,regarding leds,by now...
From the simplest to the most extreme design ...
With any kind-type of led I wish ...
...
Lucky me!

GreenThumbsMcgee · Mar 15, 2014

does anybody know about those led bulbs you find at like home depot, or lowes? i found a 12w (800 lumen) 3000K led bulb at good will, and grabbed it, but the metal part near the base heated up really hot. i thought led's were supposed to put off little to no heat at all....not the case here...the brand was greenlite. I know 12Watts isnt much, i was just trying it to see how they worked, so i could decide if i wanted to purchase a larger one. In Anybodies experience, do these LED lites get super hot? i am currently growing in a very small grow box, with cfl's, and the cooler the better in my situation. So, my question is, Are these bulbs even worth my time and more importantly, my money?
please, feel free to tell me any experience's you have had with these! thx alot you guys.

lax123 · Mar 15, 2014

i thought led's were supposed to put off little to no heat at all.

Click to expand...

i think leds r good at distributing their heat to a heatsink...but there is no way around thermodynamics, if the led has an efficiency of 40% then 60% will be heat.

lax123 · Mar 15, 2014

SDS,
I photographed the emitters of my 3W cheapos.
Are those the "good-cheap"ones or "bad cheap" ones?
Didnt find any Info about how the reds should look like. The Wwhite seems to match your photo.

stardustsailor · Mar 15, 2014

In order to find out which led chip is underneath the white leds ,unfortunately you'll have to destroy one.
Carefully take out the plastic lens .
Underneath there is a soft transparent silicone blob...
take it off carefully also.
The phosphor layer should come off with the silicone .

BRIDGELUX GENUINE CHIPS :

For epistar chips check here :

https://www.rollitup.org/led-other-lighting/536970-epistar-bridgelux-noname-red-led.html

http://www.epistar.com.tw/_english/01_product/03_prodetail.php?MID2=8

lax123 · Mar 16, 2014

Hi,
thanks.

I have a malfunctioning warmwhite.
I dissected it and this is what it looks like.
Did I do it right?
I guess it looks no where near your pics, or r those only for reds?

stardustsailor · Mar 16, 2014

lax123 said:
Hi,
thanks.

I have a malfunctioning warmwhite.
I dissected it and this is what it looks like.
Did I do it right?
I guess it looks no where near your pics, or r those only for reds?

???
Where's the chip in the photo ?
i think that is upside down (in the pic) still attached to the silicone blob ...

stardustsailor · Mar 16, 2014

I'll show you...
It is a very delicate procedure to expose the chip..

A WW ...

Here you can see the chip on the center of the mirror cup .

..

And here is a crop (and rotated ) of the above pic ,showing the blue chip.....
(It is upside-down, related to the chip diagram)

Bridgelux ...An older type of 45x45 mil ..
(Bridgelux has an infamous 'obsession' making 'B' patterns with the chip's N-P wiring... )

lax123 · Mar 16, 2014

Ah I have to cut away the yellow blob from the chip. Fak...I cut it smaller and smaller to get to the chip, then i used tweezers to hold and while that it flipped away and was gone

. I wish I had known there was more to the led then the pattern on top of it...because I got rid of all defective ones except one...

I mean can you guestimate what the standard ebay leds you get as 3W are like?

Like when u just put 3W led in search like this:
http://www.ebay.com/sch/i.html?_trk...RC0.H0.X3w+led&_nkw=3w+led&_sacat=0&_from=R40

From outside they do all look the same even from different sellers.
It feels like there is just one standard type of cheapo led, atleast on ebay.

stardustsailor · Mar 16, 2014

99% of ebay PC white cheapo leds have cheap-crappy Epiled blue chip...

Search only for Epistar or Bridgelux chipped PC white leds ...

Here's a trustworthy ( enough ) and decent (enough ) eastern seller ..
(Tested and verified,multiple times ,great service as bonus )

Has also great cheap CC led drivers and many more for the 'desperate' cheap-a$$ led DIYer and grower ...They have an e-bay shop also...

at least they say the truth and let you choose.JPG

http://www.satisled.com/

stardustsailor · Mar 16, 2014

But even those are ..somewhat misleading ..
He-he look ....

[h=3]Bridegelux ...[/h]Bridgelux has sold out the rights of certain of it's chips tech ,and easterns majke them by themselves ,
(of course such thing as " Expensive because dies need import from US. " does not stand.Far from truth ...)
but has not given the right in them to sell their chips as genuine Bridgelux (under the name of Bridgelux ... )
The chip tech/design/manufacture is being made under the Bridgelux's technology ,but has not the right to be sold as an Genuine bridgelux..
Cause ain't one ... Same all the rest though ...Power,efficiency,similar build quality,etc...)

[h=3]200-220LM/W[/h]Of course far from truth ....
200-220 mW luminosity @700mA ..
Not per Watt...
That would have been a world record in the market ....!!!!

lax123 · Mar 16, 2014

hmm
I got like 95% of my 3W diodes from satiled ebay shop -WW,CW,630,660,Blue
But when buying them there was nothing about Epiled or Bridgelux or something.
They gave me pretty crappy datasheets but those mention nothing.

stardustsailor · Mar 16, 2014

lax123 said:
lol nice.
Because thats where I got like 95% of my 3W diodes from

Still ,they probably are 45x 45 mil Epileds ,if you haven't asked for the better ones ...
Not that bad ,but not that great price difference with the better ones ...
(+5$ per 50 pcs lot .... )

lax123 · Mar 16, 2014

I attached the datasheet in my former post.
Is there a cheap crap version and a cheap-better version of all those standard WW, CW, 630, 660?

lax123 · Mar 16, 2014

I guess I got the epileds.

But for their 630 and 660 I only found one version, so maybe im lucky :-)

stardustsailor · Mar 16, 2014

Oh ..It is there ...
At the spec sheets they gave you ...

" Min 140 lum -typ. 150 -max 160 lum " ....@ 750 mA not @700 as advertised ...He-he ...

[h=3]

EpiLED 45*45Mil...

[/h]
[h=3]

Taiwan EpiLED...

[/h]
[h=3]

160-180LM/W
(700mA)...

[/h]
Beeeeep!!!!
160-180 lm at 1000mA not @ 700mA as advertised ....

[h=3]
Price higher, Stable Working & Low Lumen Decay
Normally used as 3W
(Regular stock of SatisLED and Highly Recommend)
[/h]

stardustsailor · Mar 16, 2014

Forward current: 350mA
Luminous: 30-40LM
Wave length: 660-670nm

Stinks Epiled ...
Stay away from those .
They are of low efficiency and really narrow band reds ...and unstable if they get hot...(they emit FR ...)
Or Ask for genuine Taiwan Epistar chip .

Although I would get something better in that led format ..
I.e . From Edison Led

Or from Helios (Taiwan )

Edixeon S Series are ideal for various colors of lighting, signaling, and entertainment applications.
These flux differentiated parts, like all other Edixeon S Series, provide the best lumen maintenance, superior reliability and quality light.

[TABLE="class: text0"]
[TR]
[TD="bgcolor: #eeeeee, align: center"]2ER101EX00000001[/TD]
[TD="bgcolor: #eeeeee, align: center"]

[/TD]
[TD="bgcolor: #eeeeee, align: center"]650~670nm[/TD]
[TD="bgcolor: #eeeeee, align: center"] ,170mW <= typ.output power,[/TD]
[TD="bgcolor: #eeeeee, align: center"]2.2V[/TD]
[TD="bgcolor: #eeeeee, align: center"]@350mA[/TD]
[TD="bgcolor: #eeeeee, align: center"]120°[/TD]
[/TR]
[/TABLE]
http://www.edison-opto.com.tw/01_products_list.asp?sn=1&ssn=9

lax123 · Mar 16, 2014

Very interesting, thank you.
Man how do you know things like "unstable emit FR"? I want those sources :-D

Do you have an idea on how good or bad these are?:
maybe driven at much lower current e.g. 30W instead of 100W.
http://www.ebay.com/itm/100W-Watt-R...322?pt=LH_DefaultDomain_2&hash=item2582c76fd2

http://www.ebay.com/itm/100W-Warm-White-High-Power-LED-Panel-9000LM-100-Watt-Lamp-Light-/380515680644?pt=LH_DefaultDomain_0&hash=item5898808184

http://www.ebay.com/itm/100W-White-High-Power-LED-Panel-9000LM-100-Watt-Lamp-Light-/380471977704?pt=LH_DefaultDomain_0&hash=item5895e5a6e8

I had those as my "main light engine" in my grow.

Inexpensive LED'S for a small grow

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