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Building a Home Made LED

rrog

rrog

Active member
Veteran
We'd sure appreciate if you kept an eye on this and let us know. Very interesting.

I'm curious what the distance is from that plant's meristem to the nearest LED above vs. the side. Might the lenses you have on the overhead unit be creating a slight dead spot from above, making the side LED the brighter source for that one plant top?
 
habeeb

habeeb

follow your heart
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hempfield said:
Take a look of this picture and tell me why do you think the tallest Mazar top is turning it's head to the coldest (and more powerful LED surrounding it) :

[URL=https://www.icmag.com/ic/picture.php?albumid=40320&pictureid=1011019]View Image[/url]

When the lights turn on the top is pointing straight upward. Couple of hours later it turn to that shiny cool white 10W LED. The LEDs above have 45 degrees lenses, so the light is more focused and intense. The plant does not seems to be attracted by the warm white LED.
Click to expand...

very interesting..

maybe move the bar around to another plant with the CW next to it, and see if that does anything....


I will say, I do not think it's wise to drop the CW in flower.. but that's my opinion, and with no actual data to back that up..

but I'm also leaning to veg panels, maybe a CW / WW would do better then my CW/NW setup.. I do know red is liked in veg also.. look at rives volks with red, I have had many LED panels with red and they grew excellent in veg.. if it was thought you need more blue, my plants would look like crap under a flower panel in veg.... just some thoughts on my mind


who knows.. .that's what were hear for right.. I'm just excited as I got my CW XM-L2 in.
 
rrog

rrog

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Great thoughts, Habeeb. I can see the blue debate continuing for a while. I'm dropping the CW for flower, but I can always add blue later if my thoughts change.
 
F

FreedomGrower

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I would imagine since people vegg with hps successfully that plants still like red light in vegg; I would also think that as long as you have the spectrum ratio correct it would be hard to light burn ...

I have had some plants vegging under a NW MH 400w with 75 watts 660nm osram leds and have seen no adverse effects ...
 

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M

miron555

Member
osram660 mounting

osram660 mounting

sorry for my newbe question but,
how do you mount osram hyper reds.
ive got them without mpcbc board.

1.does the way with copper foil and campton tape is ok?
2.what adhesive tape should i use under thermal pad?
3.could i use thermal adhesive glue instead of thermal adhesive tape?

:thank you:4help
 
PetFlora

PetFlora

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Keep in mind not all NW/CW/WW are created equal

Using top quality diodes, NW has more than enough blue, and probably so does WW.

There is no debate by people who have read/studied the mmj data. When 500-650 are properly in balance, then ~ 15-20% blue is all you want

This is why I say 6 WW diodes (equally spaced) surrounding one NW

Now if you are skeptical, use 3w NW diodes on a separate dimmer driver surrounded by 1w WWs
 
F

FreedomGrower

Active member
Veteran
miron555 said:
sorry for my newbe question but,
how do you mount osram hyper reds.
ive got them without mpcbc board.

1.does the way with copper foil and campton tape is ok?
2.what adhesive tape should i use under thermal pad?
3.could i use thermal adhesive glue instead of thermal adhesive tape?

:thank you:4help
Click to expand...

they are glued with thermal adhesived to a screw used as mount points
 
hempfield

hempfield

Organic LED Grower
Veteran
The top of Mazar had a huge growth in the last two day and now she is at the lever of the LED Bars, but it seems that she prefer the CW LED for some reason :

Two days ago:
picture.php


picture.php


and today :

picture.php
 
habeeb

habeeb

follow your heart
ICMag Donor
Veteran
so here's some of my findings with my DIY led.. we must keep in mind a couple things:

- I never dial a system, variables change every grow with me..
- I run DJ, they yield shit
- I was running a "veg" spectrum ( CW / NW )
- plant was fully seeded
- 34 watts was under

so with that said, I was happy. some pics:

end of life


trichs looks fine to me even under heavy blue





I am on to running some tests in veg. I am not seeing what I was wanting in terms of seedling performance, so I want to investigate further, as I remember flower panels giving better performance, so I would like to run 4 tests to determine best spectrum as I think CW / NW is nuking them with blue and I want to even the spectrum

so here is my tests I am going to run for 2 weeks each:

-half CW / half NW
-half CW / half WW
-half NW / half WW
-full NW

I will report back later my findings
 
xmobotx

xmobotx

ecks moe baw teeks
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heres the colored bars i m putting together;

its 8 660 red rebels and 2 royal blue rebels ~would love to light it up but 1 of the RB rebels arrived dead {and i soldered it up before testing like a genius}

basically; the machine screws have nylon washers to prevent shorts and they slide through th flat stock into the channel of the 'U' stock where they tighten to nuts ~not the 'best' {maybe drilling the 'U' channel under-size and threading into it could be preferable IDK seems like it strips quite readily so~}

 
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xmobotx

xmobotx

ecks moe baw teeks
ICMag Donor
Veteran
1030 looking good there! ~moving right along

ummm------


holy f* these things are bright ~wow



starting to get different ideas about how to lay out these different parts now

$#!+ thought i had the layout figured ~lol
 
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hempfield

hempfield

Organic LED Grower
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PetFlora

PetFlora

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Veteran
Habeeb,[/b] I am using a mix of NW + WW @ ~ 1:6 of screw bulbs.

I just added a Utilitech 22w (100w e) yesterday morning. Plants have responded with bigger leafs and some much needed stretch

Total wattage is ~ 47w

I am going to build a reflector today using a aluminum turkey roasting pan to better concentrate the light. 2 of the bulbs are RP (remote phosphor), so I cannot remove their globes

Seedlings are loving the ratio

Pic of Utilitech bulb for size- it's ~ 1" taller
Pic of plants was prior to adding the 22w so I can compare, but it's obvious these BrandX crosses needed more light (and higher ppm than I was feeding)
this morning I switched the 22w with the 12w

View attachment 208116 View attachment 208117 View attachment 208118
 
xmobotx

xmobotx

ecks moe baw teeks
ICMag Donor
Veteran
i m beginning to think that it may not be a good idea to run right up to max specs

guess its the community at large benefiting from my mistakes

the reds and blues are on the same .7A 24v driver and running 10 chips ~w/ .7A 2.4v being the max the reds can handle {the blues go to 1A 3v} wee-ell; like i said 1 of my RBs tested dead~ but; w/ the success of the cree diodes on their driver i was driven to try the colored loop too

and; it worked..... the 'dead' RB lit up along w/ the rest of the string ~then the RB flickered a little and it ~along w/ the next 2 {last} chips in the loop blew {died ~no explosion}

so whatever was wrong w/ the RB when i tested it {diode mode on the multi-meter} didnt prevent it from lighting up {once driver power hit it} but then it did cause some event which toasted the diodes following it in the circuit

my plan is to replace the diodes and move forward as planned anyway so; hopefully minus a faulty chip; i can still get away w/ that bleeding edge/max output driver

is it likely that mixing higher rated diodes w/ lower rated diodes endangers the lower rated diodes if a higher rated diode is faulty?
 
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