? The best LED vege/flower plans DIY

I am pretty handy and interested in LED construction , who can guide me or a link to some plans or photos and data you may have..thanks

go look in the led section of this board you will find more that what you can read in a month

Oh great ! How would I know which is best .?

kayadude said:

Oh great ! How would I know which is best .?

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The same way you learn by reading but since you want to be spoon fed all i will say is cob lighting

CXB3590 is separated into bins and colors but we only use a few options. (Not all outlined by any one thread)
Here's a DIY of an option:
http://rollitup.org/t/diy-with-chilled-pcbs-and-cxb3590.912864/page-2#post-12735060

Here's another thread I read recently....
http://rollitup.org/t/nevergoods-high-power-garden.896897/


There's a ton of DIY and L.E.D. comparison threads on RIU. Nothing on the internet taught me more about L.E.D. quicker than I learned here. You need to understand what a Bin is and what CRI or color rendering Index means. I think you probably already understand Kelvin.. Anyway it's early yet hopefully that gets ya started.

Led companies

Here's what I think is an all inclusive list of good cob led companies.

Artificial sun specialty- contact for inquiries
http://artificialsunspecialty.mysimplestore.com/

Northern Grow Lights
https://northerngrowlights.com/

Timber grow lights
http://timbergrowlights.com/?gclid=...jb6nburqI7waoSORMPToAQRqH6IEcl1rCEaAlT88P8HAQ

Johnson grow lights
Discount code for 20% is rollitup20
http://johnsongrowlights.com/index.php

Pacific lights concept
https://www.pacificlightconcepts.com

heavenbright.
http://www.heavenbright.com

TASTYLED
http://www.tastyled.com

Optic grow lights
http://opticgrowlights.com

GOGREENLEDS
Discount code for 15% is RIU15
http://www.amazon.com/s/ref=nb_sb_ss_c_0_3?url=search-alias=aps&field-keywords=cxb3070&sprefix=cxb,aps,198


Mars hydro and other 5w epiled lights are less efficient than HID.

If you want to do super easy diy and least cost get timber grow lights Diy kits.

you'll need to heatsink and fan every cob

here's a schematic

http://www.electronics-tutorials.ws/opamp/op-amp-multivibrator.html


or the op amp version^^

on my diy led experiments I use a very simple driver. I wire the leds in series to get a 150 volt load requirement then just use a bridge rectifier and filter capacitor to convert 120volt ac line voltage to 160 volt DC coupled with a lm317 or 338 constant current sink.http://electronics.stackexchange.com/questions/26414/an-lm350-can-i-have-both-constant-current-and-specific-voltage it actually gives me a driver efficiency of about 94% and cost less that $5 to build using parts from E-bay. their are some very effiecient 5 and 10 watt diodes on the market and several low powered diode will provide more uniform coverage and less "hot spots" then a small number of high powered COBs. here is one example of this http://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8T342560WW/1510-1324-ND/5875178 144 lumens per watt using small SMDs on a mounting strip. 6 of these in series would produce 28800 lumens at 148.8 volts and could be used with the simple driver described above for a total power drain of 216 watts. so far my experiments with leds have used 4000k diodes.seems that even high end led grow light makers can not agree on the best spectrum for led grow lights so it's still a matter of trial and error

here's mine as of now. im waiting on an irfp460 to replace the irfp250 i had laying around to prototype with. its only good for 200v and repeatedly going to 120v gets it pretty hot.

i took pictures without a sunglass lens in front of the camera and realized you couldn't see squat, it blinds the room. The pictures you can actually make out are taken from behind sunglasses.

it's drawing 120v @ 5.45a in the lights and 12v 1.3a in the fans and oscillator.

China's wasting no time get this MOSFET here, it's been a month.... uh just my luck for complaining it'll end up arriving promptly tomorrow. good luck yea?

iHearAll said:

you'll need to heatsink and fan every cob

here's a schematic
View attachment 3728571

Click to expand...

oh shit i didnt write in there that those are 3000-3500 mA LEDs each. Same goes with the whites if you choose those. crucial shit.

if you wanted a weaker light then maybe get a bigger inductor or just string one or two extra LEDs in the way like mouricem00 is saying.

iHearAll said:

here's mine as of now. im waiting on an irfp460 to replace the irfp250 i had laying around to prototype with. its only good for 200v and repeatedly going to 120v gets it pretty hot.

i took pictures without a sunglass lens in front of the camera and realized you couldn't see squat, it blinds the room. The pictures you can actually make out are taken from behind sunglasses.

it's drawing 120v @ 5.45a in the lights and 12v 1.3a in the fans and oscillator.

China's wasting no time get this MOSFET here, it's been a month.... uh just my luck for complaining it'll end up arriving promptly tomorrow. good luck yea?

Click to expand...

I see "sunspots" for a while when I make the mistake of looking at leds without very dark sunglasses . I still grow with T5HOs but have an experimental grow closet set up to test LEDs.I'm currently playing with low power diodes like these to try and get more uniform coverage and eliminate hot spots.https://www.cdiweb.com/ProductDetail/CLU7010304C4303M2K1-Citizen-Electronics-Co-Ltd/591044/

What do you look at for efficiency? Ive been just turning down the volume, so to speak, to get to a lower power drain.

I saw these led globes yesterday. Just a band of spinning led making an optical illusion. Thinking about making a small grow spectrum version for a veging plant or cactus idk cool stuff.

I use caloric test to determine efficiency of the diodes. but that is not important to me. I grow one strain. super silver haze and in comparing lights I look at how the plant performs under the light compared to my main grow under fluorescent. im a PU MMJ grower just trying to keep the medicine bowl full for me and my so taste and effectiveness is more important than maximum yield or shorter grow time. but so far yield, taste and effectiveness (potency) has been better with my T5HOs than with the leds I've tested. I have only tried a 300 watt mars hydro and 4000k COBs without supplemental single band LEDs. spectrum may be more important than a 20-30% increase in luminous efficiency. radiant efficiency seems more important and a caloric test is the easiest way to determine that variable.high CRI diodes do not produce anymore heat than low CRI diodes but the difference in actual SPD results in a lower luminous efficiency for these high CRI diodes.however the SPD for these high CRI diodes look closer to the mccree curve so I will be testing them in my grow closet soon.this is a very new technology and we still have a lot to learn about it