Got the heat sink sanded and have a piece of 1/8" aluminum for the top. Will measure and cut hole for fan later. I have the holes for the cob holders drilled and tapped. The driver came today, it's the dimmable one http://www.meanwell.com/search/hlg-120h-C/HLG-120H-C-spec.pdf. I just need to know what to get and how to install it and whatever it is to make it dimmable. I need instructions on dimming for a dimwhit.I have a question about a heatsink that I just picked up, it is 8x12x1-1/4" Will it work for 2- Z4 3000K's. Maybe someone with more smarts than me can figure it out.View attachment 3289614 I'm going to put it in a nice box, with a fan on top if it's feasible.
https://www.rollitup.org/t/meanwell-led-drivers-3-in-1-dimming-function.838760/View attachment 3292436 I just need to know what to get and how to install it and whatever it is to make it dimmable. I need instructions on dimming for a dimwhit.
It's the B version, thank's I'll take you up on that.Nice setup MH! Did you get the A version or the B version of the driver? If my memory serves, I asked Guod to hold my hand on how to make a dimmer for the B version. I used a 100K dimmer and it worked great. I have an extra one if you need. If it is the A version the dimmer is an internal pot.
Do you live in or near Portland, Oregon? The ruler caught my attentionView attachment 3293055 The fan covers almost all of it, all of the fins will get some air. It should work fine, now thinking of a chassis of some sort for it. It's time to see if my Lemon Kush is ready.View attachment 3293057
just across the Columbia se of battle groundDo you live in or near Portland, Oregon? The ruler caught my attention
O so somewhere close to the border then? I lived near Portland once upon a time. Coolest town I've ever been apart of.just across the Columbia se of battle ground
How many plants is he planning on hosting inside the little hut? @1050mA, you can expect around 30W output per V18, while the CCT will determine the efficiency. My 4000K V18's run (~ 1037mA) around 37% efficient, 40% on good days .so my friend who lives in a legal state has this cab he wants
to fill with LEDs. thing is pretty slick, controlled buy a cooler
guys digital temp monitor that cycles the exhaust on and off
as needed.
View attachment 3293348
monitor
View attachment 3293349
it used to run a 250w HPS, cab's inner dimensions are
32"w x18"d x48"h, so exactly four square feet. he asked me to
build a LED for it, and i'm debating between 4 or 5 vero 18 at
1050 mA. 4 would probably do better in terms of grams per
watt, but he would get more out of the cab with 5. he typically
yielded 5-6 oz from the 250 per cycle, which would be ~150w
worth of lighting @ gram per watt yields. here are some old pics
of her fired up and budding.
View attachment 3293350
View attachment 3293351
i was counting on 30w output per v18, he will also be using the 4k modelHow many plants is he planning on hosting inside the little hut? @1050mA, you can expect around 30W output per V18, while the CCT will determine the efficiency. My 4000K V18's run (~ 1037mA) around 37% efficient, 40% on good days .
With 5x COBs operating in that hut, you may face some heat-related issues depending on how you craft the LED fixture, otherwise try for 5x.
I'd consider 6x COBs, one for each plant . I spoil my lady with 2x V18's and a BlackStar V2 240W (Flower)i was counting on 30w output per v18, he will also be using the 4k model
because that's what i've got around to build for him
i think he's going to run 4 or 6 plants, depending on variety. the run i showed
a picture of was six plants. if he runs 5 COBs, that puts his watts dissipation
at ~37.5w /sq ft. add in the fans and total power draw should be somewhere
around 180-190w.
i would think that the previous 250w setup would have generated more
heat than 5x vero 18s. even though those look like computer fans for the
exhaust, those little things pull some air. the total volume of the cab is 16
cu ft, and the fans exhaust about 94 CFM. they kept it nice and cool even
with the previous open fixture HID.
for mounting, either a heatsink USA or arctic 11 plus. the 11 plus is just so
convenient it's hard to say no, and they really perform well.
Yeah the electric potential here in United States is around 120V.Amazing thread, Deep to thanks to the Supra and the other key growers here... HATS OFF!
Where i live the power is 220v. ....Seems you are mostly in N America @ 110
Will i need different drivers than the Ebay 50w many of you use?
http://www.ebay.com/itm/50-W-Watt-High-Power-LED-Driver-AC90V-265V-50-60HZ-Waterproof-/181578939219?pt=LH_DefaultDomain_0&hash=item2a46f2bb53
Says 90-265v but i want to be 100% sure.
Also any info on all how will my current would change things?
Cheers