modular overkill led striplight build

cobshopgrow

Well-Known Member
56er-1.jpg

i rebuilded my striplight, containing 56 EB3 slim bridgelux strips, 3000k 80cri.
Killed some connectors during this action, their release mechanism can be a pain.
Anyway, it works!

56er-2.jpg

The new frame is 80x80cm (31,5x31,5 inch) 20x20 t-slot profile, hung on all 4 corners.
Its for a 3x3 and/or a 3.33x3.33 (1 suqare meter).
Driven by a HLG 320 2100B, the strips are 14S 4P.
Maxing out the driver nicely with 153V at the strips.

back.jpg voltage.jpg


Theyre mounted by 3d printed adapters , M3 nuts and nylon washers.
56er-3.jpg

This will also isolate the strips from the frame.

The temparature of the strips are reaching just about 44 C @ 525mA with some low airflow, temps will be even better in flower when your fans are all running full.
This is meassured by a thermal cam, so should be realtive precise compared to these IR guns.

t1.jpg
t4.jpgirgun.jpg
back of the strip

t5.jpg


thermals where meassured after about 1h runtime.

30cm (ca. 12 inch) away i meassure about 55-60k lux.

lux-12inch.jpg




Benefits are:
- efficient,according to the datasheet @ 700mA 187 l/w, i use 525mA only, so should be slightly above 187 (on paper).
- driver nicely utilized, ampere kept low
- wide n even spread
- modular, other colors can be added easily
- no heatsink needed
- lightweight, can be handled with ease
- nice price
- build fun

next ill add some color strips on seperate channels to play arround.

48 660nm leds, driven by a HLG 40 driver / or 72 660nm by a 60W HLG.
12 730nm leds
12 360-370nm leds

all on custom made strips, i am in to soldering.

I keep you updated and hope you like it :-)
 

Rocket Soul

Well-Known Member
Insane build!
So: at 525mA youre Tj is 44 and ambient is 33 so 11 degrees increase with no heatsink. Right?

Do you (or anyone else for that matter) know how that compares to the non-slim ebs? Either gen 2 or 3. I think i saw measurements somewhere which was somewhat lower, but those where Tc (case temp) which should allways be lower.

(Edit: had a look on the datasheet, the flux versus temp graph is based on Tc which should give you no more thaan maybe 1% drop in efficiency if we assume Tc at about 35-37C. Pretty damn good)

Also, do you get your nylon washers online? I have no idea where to get them locally, any link?

Props for all the details.


Some of the led old timers have suggested higher 630 than 660 which is a concept i hope to explore.

I also played a lot with ideas of how to make a fixture for the 1m metric tents, the eb slim with same nominal driver current on all lengths gave me the idea of doing one 2 footer and a 1 footer in series, for a 59+34=93 cm strip.
 
Last edited:

cobshopgrow

Well-Known Member
thanks rocket.
yep, no heatsinks, other then the aluminium t-slot bars who act as a heatsink and are just a few dollar.
You could in theorie attach 2 more of those in the middle, but thats really a lot screws then and not really needed for my setup.
I attach a picture below, you can see the where it sucks away the heat, green.

I have no regular EB2 or 3 strips, only i could offer to make some desk thermals with a slim strip at different mA settings.

All i know is this.

As you also,lol (but theyre similar ??, thermal cam, some FLIR)

Case temp with a IR gun for leds dont work good.
You can compare the ir temp pic with the pic of the back of the strip, you see the diff.

The ambient there is much lower 17-18c, was a desk test,
Mine was in a 1h heated tent to give some worst case sceanrio, a good 30c.
As stated the airflow will be more in real world, this gives another few degree, easily.
Could also put some cheap alu t channel (calced 20 bucks for it) on the back with simple doubble sided adhesive, but probably not worth the effort.


The new leds are really impressive in what they deliver at what temparatures, i am really happy with the result so far and think i leave it like it is.


I luckily found a bag of those washers in the company, honestly i forgot where theyre ordered from, probably local supplier.
Check ebay Polyamide Washers for M3 , there will be one in the EU who deliver to your country by letter, IF not locally to have ;-)

2 footer plus 1 footer is a even better fill for a square meter, i probably will need a few cm left for my uvb cfls.
Think thats a good size for a square meter and still handy.
Am sure you figgured out a driver setup for it.
I took the 100 pricebreak for the 340mm, for my order that was perfect.
Also i like the 320 2100b, according the meanwell tests the most efficient of their 320´s and it was a good fit, the 2 footer have a diff diode count.t3.jpg
 

cobshopgrow

Well-Known Member
thanks tint and zypher, nice you like it.

one thought about the thermals on these and the regulars.
Both arent that good with their FR4 base (guess its just FR4), of course the regular ones will be better as they will offer a bigger thermal pad.
But i wouldnt be able to fit as many regulars as slims in that space anyway, which would mean a higher drive current to compensate = worse thermals.
I think theyre now at below 0.1W each led, more 0.08 or so.
Well you know how it works :-)
 

Rocket Soul

Well-Known Member
thanks rocket.
yep, no heatsinks, other then the aluminium t-slot bars who act as a heatsink and are just a few dollar.
You could in theorie attach 2 more of those in the middle, but thats really a lot screws then and not really needed for my setup.
I attach a picture below, you can see the where it sucks away the heat, green.

I have no regular EB2 or 3 strips, only i could offer to make some desk thermals with a slim strip at different mA settings.

All i know is this.

As you also,lol (but theyre similar ??, thermal cam, some FLIR)

Case temp with a IR gun for leds dont work good.
You can compare the ir temp pic with the pic of the back of the strip, you see the diff.

The ambient there is much lower 17-18c, was a desk test,
Mine was in a 1h heated tent to give some worst case sceanrio, a good 30c.
As stated the airflow will be more in real world, this gives another few degree, easily.
Could also put some cheap alu t channel (calced 20 bucks for it) on the back with simple doubble sided adhesive, but probably not worth the effort.


The new leds are really impressive in what they deliver at what temparatures, i am really happy with the result so far and think i leave it like it is.


I luckily found a bag of those washers in the company, honestly i forgot where theyre ordered from, probably local supplier.
Check ebay Polyamide Washers for M3 , there will be one in the EU who deliver to your country by letter, IF not locally to have ;-)

2 footer plus 1 footer is a even better fill for a square meter, i probably will need a few cm left for my uvb cfls.
Think thats a good size for a square meter and still handy.
Am sure you figgured out a driver setup for it.
I took the 100 pricebreak for the 340mm, for my order that was perfect.
Also i like the 320 2100b, according the meanwell tests the most efficient of their 320´s and it was a good fit, the 2 footer have a diff diode count.View attachment 4417807
Cool, those are new numbers for me. I only mentioned case temp cause thats what they use in the datasheet, and it only makes youre numbers look better. My interest was that temps seemed high to me, running vestas at about .2w a diode (slightly higher but on some sinking) i could touch the diodes with no real feeling of heat, defo not feeling +40C.
 

cobshopgrow

Well-Known Member
i probably have to test them with 700mA to have some more comparable info, all i can say, @ 525mA it looks all nice n dandy.
 

cobshopgrow

Well-Known Member
but it wont stay in place? dunno, hotglueing ??, i am pretty newschool there, my metal work sucks.
edit edit edit.... right!
lol yeah why even take t-slot and a adapter for holding the leds, well i did as it would had been cheaper then a flat alu bar and it is the most laziest way i can imagine doing some precise holes (me), precut slotted alu, 3d print... works for me.

Would probably take the cnc before taking the drill.
but there are plenty ways even some wood (while aulminium is nicer, cooling wise) or even more quick n dirty, be creative :)

have to say i like it when it snug well together, those 3d prints are pretty precise nowadays, cnc of course too.
 
Last edited:

cobshopgrow

Well-Known Member
hm, let me think.
First, the price brake at 100 was a reason for me, wouldnt have reached that with 2 footers.
Second, i had a 320 2100b allready and the 340nm have a different diode count, theyre not 1 foot.
This make them fit better to the meanwell cc drivers, to my view (edit: regarding their voltage).
Third i have no tent which will fit 1190mm
4th, i think they didnt had stock for 1190mm.

but they are even cheaper! right.

not by that much though, but if i would had 4x4 tents and need for more then 100 strips (or nearby), plus digikey would had stock.
that would had been my option and i would had figgured out another driving concept.

I mean, the concept can be adapted, np.
Edit, allready recommended this setup to a friend, use the dirt cheap eb2 4 foot with such frame, as t slot is dirt cheap here while heatsinks expensive as shipping from china is.
 
Last edited:
Top