Bridgelux EB Series Build
- Thread starter brahbbyB
- Start date
Chip Green
Well-Known Member
I have 4ft long "ladders" with 15x of the very same EBs (560mm 3000k), as the charts 3.5 LMBS shared, also running at 700ma (HLG240C700) and after a quick "Dr Meter" LUX reading, I'm finding my distances roughly doubled (eyeballed, no ruler) to get near those numbers, and I guess I have about twice as many strips, in a larger area although, so that stands to reason, more overlaps?....? Ive had satisfactory results, keeping the LUX on my $30 unit, upwards of 30000 on any EB panel ive built....
But my standards could be low? I'm admittedly, lets say, grade-school level, growing skill wise....
But my standards could be low? I'm admittedly, lets say, grade-school level, growing skill wise....
Serva
Well-Known Member
https://www.ebay.com/itm/Double-Sided-Thermal-Adhesive-Tape-for-LED-CPU-GPU-Heatsink-3mm-30mm-x-25m/182546991267?hash=item2a80a608a3:m:mTVAamipjVYovArUKBIA_Sw
I choosed 0,15mm x 25mm x 25m, and just from my first experience, it's pretty strong
(delivery time of 40 days!)
Thanks for your tip, but I wasn't even able to peal back anything with the knife...!
Because it's a christmas gift, I just went on and did the wiring. With a little tricking on the back, I was atleast able to make some clean front (http://rollitup.org/t/eb-strip-panel.954018/#post-13962519).
3.5 LMBS
Member
Well the lack of penetration has its benefits in certain ways, I suppose.
I can, and do, have between 1/3 & 1/2 my cab (2x 2G smart pots) later on in flower just inches under my light.
I have a couple more broads 3 weeks behind them that are just finishing stretch under lower light levels yet just inches below the 2Gals.
I'm bout to throw 4 more, in 6" square pots too, in the next week tops and they will get even less light at the beginning.
I can do all of this with 36" of height. Fucc, i only need 24" to pull it off. And that's plenty of room
One Love to LED strips
I can, and do, have between 1/3 & 1/2 my cab (2x 2G smart pots) later on in flower just inches under my light.
I have a couple more broads 3 weeks behind them that are just finishing stretch under lower light levels yet just inches below the 2Gals.
I'm bout to throw 4 more, in 6" square pots too, in the next week tops and they will get even less light at the beginning.
I can do all of this with 36" of height. Fucc, i only need 24" to pull it off. And that's plenty of room
One Love to LED strips
muleface
Well-Known Member
so i just went back in time...I replace my led strip light rig with a 630w CMH. I have no idea how to use it, if there are any weird things i need to know? I have never actually owned a HID light, i have only ever run LED. Honestly, i kind of like it. don't boo me...Its sorta elegant in its simplicity. It also only took me about 5 minutes to setup and hang, however i did need to find a picture online to figure out how to hang it. Its super bright, its got a nice color to it, like a slightly blue at start up then transition to white, with a touch of red. it was also pretty cheap, all things considered. I think i paid about 170 for the fixture, then i did an amazon warehouse deal on the CMH for like 57 dollars. so it was like 38 cents a watt, which if fine by me.
Its super bright, its got a nice color to it, like a slightly blue at start up then transition to white, with a touch of red. it was also pretty cheap, all things considered. I think i paid about 170 for the fixture, then i did an amazon warehouse deal on the CMH for like 57 dollars. so it was like 38 cents a watt, which if fine by me.can u try to heat it with heatgun to see if it will loosen up? the thermal tape I used from amazon is nuts too no way its coming offI fucked up the positioning of the strips, when I mounted them with thermal tape. I want to correct it, because it makes my wiring complicated now...
But I was not able to take the strips of at all. Tape is working... I tried with a knife, to take them off, no chance!
Does anyone has a trick for me, how to get the strips off again?
@Randomblame ?
nfhiggs
Well-Known Member
I was gonna suggest the same thing. We use heat guns to remove stubborn tape at work.
3.5 LMBS
Member
Do you mean your readings are roughly half at the same distances Chip?
- I underlined for emphasis -
One Love to you EB heads for the Holidays
Comin atchu from the snowy foothills of the Canadian Rockies
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3.5 LMBS
Member
How's the 630 working out fellow?
For some reason I'm slightly jealous. I'm sure it's partly -mostly due to the fact i've had 2×250w HPS bulbs for, no lie, a good dozen years and never lit em up. But a 630 CMH
I wonder if Santa hears me
Randomblame
Well-Known Member
Run the strip for half an hour to warm it up if possible with 1050 or 1400mA. Maybe 50 or 60 ° C is already enough to remove the tape. A hot air gun is probably already too hot and one needs to be realy careful..
Maybe ask the seller whats the best way is to remove thermal tape.
I have not used it yet, but now I will double check 3 times before sticking it on, LOL!
Serva
Well-Known Member
That would kill my 1ft strips, but I got, what you wanted to tell me
I will try it at some point with the strips with broken connector, which I don‘t use. Sound like a good idea!
Randomblame
Well-Known Member
That would kill my 1ft strips, but I got, what you wanted to tell me
I will try it at some point with the strips with broken connector, which I don‘t use. Sound like a good idea!
Oh! Sorry, 1footers maxed out at 700mA and should be enough. Had somehow 2footers in my mind...
Chip Green
Well-Known Member
No, I mean the distances roughly doubled to get the SAME readings(ish) that you had....Do you mean your readings are roughly half at the same distances Chip?
- I underlined for emphasis -
One Love to you EB heads for the Holidays
Comin atchu from the snowy foothills of the Canadian Rockies
I have 30,000+ lux at over just over a foot...
3.5 LMBS
Member
Well that's what I thought you meant, but now I'm confused...I'll explain;
You have 15×1" strips in 48"(4' you said)
That means that, if I understand correctly, you have 33" of fixture without strips. Or approximately a 2" gap for every strip.
My cabinet is 17×26.5" inside, I say 18×27 as that's 3.375 squre feet, just easier!
So my fixture is 16" wide and have 8 strips, so roughly twice the density of diodes.
So you have roughly half the diodes/$ invested but you're maybe getting better penetration. I'd like to believe my LUX meter is right, being realistically though maybe yours is more accurate
If mine is wrong however my plants should be just fried as they are less than 3 inches away, between 2 & 2.5". So i'd be over 100K LUX. But you can't be getting satifactory results at 15k, which is what i assume my meter would read...That's what I don't get...HELP
@Randomblame - maybe you can help me understand this. I there a sweet spot for overlap between diodes? I always assumed that besides issues of thermal management, the closer the better.
This is from a monstercropped clone from my outdoor purple kush - unknown breeder, the clone was dropped off at my house by a friend mid June. I had never cloned, decided to practice and took 2 cut. They both rooted and here we are, a picture of my results with EBs thus far - @2.5" remember
Day 35, last Sat.
Attachments
Serva
Well-Known Member
I have checked my small cab (2sqft), with white walls, and there is nearlly no difference between 1-2“ and 5“-6“. Everything over 35w/sqft was stressing my plants, even with the bigger distance.
I don‘t have any knowledge about the subject, but just thought about it: if I rais my light, there will be more overlapping, so every bud is getting light from more angels. Inverse square law, light getting lost, bullshit! atleast in every cab / tent with reflectiv walls (90% reflection). More angels, more uniform, more efficient, so it will negate the 10% loss. Just my pov, but no science behind my arguments!
Most difference I see is, that my plants grow more bushy, since I covered the whole canopy with strips and raised the panels. Such a nice grow, compared to the fl tubes I had before. 2nd major change was, that I was able to run 50w with 12x 1ft strips, instead of 2x 75w fl tubes, with better results! 2/3 energy saving, thats was like a miracle for me. And I think it‘s all because of the uniformity.
I don‘t have any knowledge about the subject, but just thought about it: if I rais my light, there will be more overlapping, so every bud is getting light from more angels. Inverse square law, light getting lost, bullshit! atleast in every cab / tent with reflectiv walls (90% reflection). More angels, more uniform, more efficient, so it will negate the 10% loss. Just my pov, but no science behind my arguments!
Most difference I see is, that my plants grow more bushy, since I covered the whole canopy with strips and raised the panels. Such a nice grow, compared to the fl tubes I had before. 2nd major change was, that I was able to run 50w with 12x 1ft strips, instead of 2x 75w fl tubes, with better results! 2/3 energy saving, thats was like a miracle for me. And I think it‘s all because of the uniformity.
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Randomblame
Well-Known Member
It's the effect of better effiency, homogeneity and diffuse light!
Good homogeneity is when you have ~80% brightness at the sides and diffuse light means the light comes from countless multiple angles.Together with the better efficiency it makes them unbeatable ..
In my view, many small light sources are better than fewer large ones.
I imagine flexible "LED's screens" in the future with LED's in pixel size (1920x1080p, LOL) and the screens hanging on the ceiling and the walls. Or even better directly incorporated into the tent material so one need only to buy a "500w tent" for example and nothing else.
Chip Green
Well-Known Member
I should also mention I have 2 of those "ladders" side by side, lengthwise, a total of 30- 560mm 3000K @ 700ma, inside of a 3'x8'x 5' chamber.....so the cumulative effect of the overlap could be a factor.
My Lux meter is a $25 Ebay special, "Dr. Meter" the orange and black one....
I cannot attest to its overall accuracy vs a real good one, but its useful for my purposes..
It may never be explained, and I care not, but whatever light these things are putting off, my ladies soak it in, and thrive....
My first flower phase under an 8 strip 1050ma version, got a little wacky. Before I had that "Dr Meter" I had the panel like 4 inches from the tops, and within a few days, most of the leaves had turned LILY white....LOL.
My Lux meter is a $25 Ebay special, "Dr. Meter" the orange and black one....
I cannot attest to its overall accuracy vs a real good one, but its useful for my purposes..
It may never be explained, and I care not, but whatever light these things are putting off, my ladies soak it in, and thrive....
My first flower phase under an 8 strip 1050ma version, got a little wacky. Before I had that "Dr Meter" I had the panel like 4 inches from the tops, and within a few days, most of the leaves had turned LILY white....LOL.
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muleface
Well-Known Member
I am really liking it. I am getting a new reflector for it to better serve my space. But as of now my plants have reacted favorably to the new light. I am actually running it at 600 watts not at 630, its not an energy saving thing, its just my ballast only runs at 600 watts. If things continue this way, i may replace all my lights with these. My current CMH could be described as a Gavita knock off. It looks just like it, but is not a actually gavita. But regardless, it works great. I am curious as to how long it will last.How's the 630 working out fellow?
For some reason I'm slightly jealous. I'm sure it's partly -mostly due to the fact i've had 2×250w HPS bulbs for, no lie, a good dozen years and never lit em up. But a 630 CMH
I wonder if Santa hears me
ThatSpudGuy
Well-Known Member
Looking to put together a good light for my veg tent. How many of these strips would do for a 1 metre x 1 metre and what driver would i use to power them.
https://www.digikey.com/product-detail/en/bridgelux/BXEB-L0280Z-50E1000-C-A3/976-1495-ND/6236281
Thanks guys
https://www.digikey.com/product-detail/en/bridgelux/BXEB-L0280Z-50E1000-C-A3/976-1495-ND/6236281
Thanks guys