DIY Modular LED-Light

stardustsailor

stardustsailor

Well-Known Member
guod said:
Veggie by NASA

"Veggie weighs 7.2 kg and requires 115 Watts of power. While stowed Veggie requires 0.02 m3 and deployed it requires 0.11 m3 of space. Veggie has a *growing area* of 0.16 m2 with a maximum growth height of 45 cm. The hardware is cooled with cabin or avionics air. The Veggie light sources are red (640 nm) 300 micromole/m2/s, green (540 nm) 30 micromole/m2/s and blue (440 nm) 50 micromole/m2/s."

http://www.nasa.gov/mission_pages/station/research/experiments/Veggie.html

*“The internal growing area is 11.5 inches wide by 14.5 inches deep, making it the largest plant growth chamber for space to date,” Massa said.*

so no cob, no apache in space

http://www.disclose.tv/action/viewvideo/169931/The_Space_Station_Will_Soon_Have_Its_Own_Garden_Veggie__NASA/
Click to expand...

Cool Tech ...
Aimed for Space missions ...

Well,yes ...
COBs are aimed more to Earth's tents,closets and or rooms ...

That poor American Native's tribe ..
After being accused for the most horrible things done to a man's flesh ,
they get almost slaughtered to extinction and then
they end up as a 'fearful' name for helicopters,tattoo machines ,cars,shaving razors,racing horses ..
Even led grow lights ...

Weird method to apply respect ...Or make a tribune to ...

Cheers...
:peace:
 
MrFlux

MrFlux

Well-Known Member
guod said:
Veggie by NASA
"Veggie weighs 7.2 kg and requires 115 Watts of power. While stowed Veggie requires 0.02 m3 and deployed it requires 0.11 m3 of space. Veggie has a *growing area* of 0.16 m2 with a maximum growth height of 45 cm. The hardware is cooled with cabin or avionics air. The Veggie light sources are red (640 nm) 300 micromole/m2/s, green (540 nm) 30 micromole/m2/s and blue (440 nm) 50 micromole/m2/s."
Click to expand...
Lets do the math for fun and insight. The total PPFD is 300+30+50 = 390 umol/m2/s, the area is 0.16 m2, so PPF = 390*0.16 = 62.4 umol/s. There is 115W going in, so the total PAR efficiency is 62.4/115 = 0.54 umol/J. This means we hobbyists are doing three times better than NASA!
 
salmonetin

salmonetin

Well-Known Member
...more pics.... maybe with the new dream.... a vid is too much?...

...what varietIes you grow?... mothers name,...

...vegetative mothers... ,,,and pics for flowering chamber?...

saludos...
 
guod

guod

Well-Known Member
Dimming... the hard way
Simulation in iCircuit (iPad-app)
3 Channels
channel V.png
Perfboards, rotaryswitches and some wire
ccr-scheme.jpg
realworld model
board.jpg

all in the box
caseint.jpg

more complete
casecomplete.jpg

direct from my dirty fingers
front.jpg
running >> see green led
frontcop.jpg

Spectrum and Power matrix
"B" stands for % in the blue range(400-500nm).500 to 600nm is fixed at 13%. rest is red
U* stands for user setting.
power.jpg

my back
back.jpg
 
salmonetin

salmonetin

Well-Known Member
...thanks Master Guod... ...good job...:clap::clap::clap:

...decoding....

...3 channel... channel 1 vegetative?... channel 2 floration?... channel 3 potency?...

...S&C (seeds and clones)... V (vegetative)... GM (mothers????).... F (floration)...

...led its on...when all its off???... ...i dont think but for the picture it seems...

...and B 20... 20w? B 16... 16w? B 12... 12w?...


Saludos
 
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guod

guod

Well-Known Member
...led its on...when all its off???... ...for the picture it seems...
see it as powergood signal.

...and B 20... 20w? B 16... 16w? B 12... 12w?
B 20 means 20% of the spectrum is in the blue range

S&C (seeds and clones)... V (vegetative)... GM (mothers????).... F (floration)...


the settings; here in µmol

S&C for seeds and clones. ends with first real leafes, powerwise
seedclone.jpg

V - just veg up to 70W
veg.jpg
GM - general/Mothers; less blue than the V setting
gm.jpg

F - FlowerPower
f.jpg
U*=Ch-F - channel F solo // Seed activator
useed.jpg
U* - low blue test //streching!
ublue.jpg
Ch-V - channel V solo // only in it for the mix!
ch-v.jpg
 
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SupraSPL

SupraSPL

Well-Known Member
MrFlux said:
Lets do the math for fun and insight. The total PPFD is 300+30+50 = 390 umol/m2/s, the area is 0.16 m2, so PPF = 390*0.16 = 62.4 umol/s. There is 115W going in, so the total PAR efficiency is 62.4/115 = 0.54 umol/J. This means we hobbyists are doing three times better than NASA!
Click to expand...
Yes and in their case, they would be best served to run very soft to reduce weight of the heatsinks, so they could get up to 60% efficient with commercially available COBs. If they contracted directly with Cree, they might be able to run at 70-75% efficiency. When you put it that way, they could be doing (8?) times better and it would probably cost about the same.
 
guod

guod

Well-Known Member
...next piece of the puzzle... The Driver

build with this tiny driver-modul from anvilex
X351249.JPG
the working horse on this PCB here, is the ZLD1366

"The device operates from an input supply between 6V and 60V and
provides an externally adjustable output current of up to 1A."
  • Single pin on/off and brightness control using DC voltage or PWM
  • PWM resolution up to 1000:1
  • High efficiency (up to 97%)
  • Inherent open-circuit LED protection
http://diodes.com/datasheets/ZXLD1366.pdf

schematic for my build

driver.jpg
with the controller above this driver work in CCR-Mode, PWM is also possible.
current range starts at 150mA. the upper limit is 800mA.

Prototyp of a Dual-Driver for testing heat; performance; Dimming; Emi.

driverdn.jpg

flat
driverflat.jpg
driverup.jpg

real one will hopefully look like this...
smd-driverbrd.jpg
 
Positivity

Positivity

Well-Known Member
Wish I went to MIT or sumpin'...always liked building things. Would of been fun n better career path..oh well...hindsight is 20/20.

Interesting watching home cooks at work either way! Impressive builds!

Nice seeing those spectral choices..I've felt very similar for a while now. Haven't actually implemented them all yet though. I like the seed starter spectrum..been meaning to try that as my seed starts aren't impressive indoors. Will be seeing if 2700k is an improvement without the dedicated red bump.
 
guod

guod

Well-Known Member
the seed starter spectrum is just one of the next test

more here...

"If we shine red (or it turns out even white) light on imbibing seeds, then virtually all of the phytochrome is converted to the Pfr form and this photoactivates the genes in the DNA. Almost all of the seeds will germinate in this light!"
http://plantphys.info/seedg/seed10.html


"The wavelength of light is critical. The seeds germinate well in white light, but also to single "colors"...particularly red light (660 nm). On the other hand, far-red light (730 nm) strongly reduces lettuce germination."
http://www.biologie.uni-hamburg.de/b-online/library/plant_physiology/Seedgerm.html
 
guod

guod

Well-Known Member
grow is not done by me, call me the man at lights...

runnig test of veg spectrum and power settings -
...see some post above for more information

two plants, one auto, one photo
day 20 as told, just repotted
6 days at 37W - S&C
14 days at 55W - V
the photo
jlP9874.jpg jlP9873.jpg jlP9872.jpg
the auto
jlP9877.jpg

....no cob involved
trotmc.jpg
 
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guod

guod

Well-Known Member
guod said:
next cool spectrum-tool
in a Japanese/english mix
http://www.1023world.net/diy/spectra/
Click to expand...
Update
starting with How to
http://spectra.1023world.net/howto-en.html

http://spectra.1023world.net/

best part for me..
Export function for the spectrum data

************************************************************
Nichia NVS WarmWhite (2700-4500K) [120°] x1
----------------------------------------

* SIMULATION DATA
----------------------------------------
Luminous flux : 119 lm
Radiant flux : 384 mW
PPF : 1.8 umol/s
TCP : 3460 K
CRI : 90
λp : 608 nm
Color : #FFA566
----------------------------------------

* PERFORMANCE @ 30cm
----------------------------------------
Irradiance : 0.5 W/m²/s
Illuminance : 141 lx
PPFD : 2.1 umol/m²/s
*************************************************************
spectrum data
...

595 ... 0,8560
600 ... 0,8770
605 ... 0,8920
610 ... 0,9180
615 ... 0,9280
620 ... 0,9640
625 ... 0,9840
630 ... 1,0000
635 ... 0,9940
640 ... 0,9840
645 ... 0,9670

....
..
 
stardustsailor

stardustsailor

Well-Known Member
Brother Guod ,I'm in the need for your advice -opinion .
I want to replace my cheap hand-held multimeter ( MASTECH MS8268 ) with a higher quality one ...
I need something more rugged ,more accurate and to hold on at it's calibration .
( Not going to be used only for LED/COB / electronics work .)
I should not forget to mention that ,I'd like it , to be powered with 1.5V AAA or AA batteries ,
and not with the usual 9 V NEDA 1604A ones.
I did some research and I've came down between two ...

Either the Keysight ( Agilent ) U1242B (<= fast updating ,extra features )

or either the Fluke 28II (<= IP67 ,800 hours battery life )

I'm more inclined towards the Fluke 28II ,I've to admit ...
If it was you ,which one would've been your choice ?
:P
Amber or yellow ?
(:

Thank you .

Cheers.
:peace:

P.S. : Please ,do forgive me for the off-topic post .
 
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