LEDgardener

Hello everyone, I love this page, I have learned several things, but I still need information. I hope you can help me.

I have been looking for an economical but efficient option in LED strip format. So far, my attention is the Brigedlux EB series Gen 3 strips.

I am thinking of acquiring 590 mm 80 CRI strips, both 3000k and 4000k, both for growth and flowering.

The luminous flux at 25 ° C for 3000k is 2490 lm, at a current of 700mA and 19.1v, having an efficiency of 186 lm / w.

The luminous flux at 25 ° c for 4000k is 2675lm, at a current of 700mA and 19.1v, having an efficiency of 200lm / w.

My cultivation space is 1.20m x 1.20m. How many strips would I need?

Attached image of the spectrum of the strips at 80 cri, as you can see I think complement with 15 Cree XPE-2 660 nm led chip and 5 Cree XPE-2 730 nm led chip. Do you think it is enough for my space?

https://ibb.co/nm9tSZf

Hi!

Are you looking at the slim series strips that are already at digikey, or something else?

For a 1.2x1.2m space you want 480w, can go up to 600w. The quantity of strips will depend on how hard you run them. If you want to get the claimed efficiency that would be at 700mA, so you would need a lot of strips, but wouldn't need to buy heatsinks.... at least for the normal size strips.
Your looking at about 34 strips, you could make 4 fixtures of 8 strips.

I'm not sure how hard the xpe-2's can be driven, 10% of your total power can be a general guide line, though no rules there. The xpe3 is already out, and you could get 3 diode pucks at cutter. Besides power you would probably want to think about the spread.

With regard to these slim eb3 strips, does anyone have a good line on decent
enclosures with covers to mount them in? I am considering adding some strips
for under canopy lighting and would want to diffuse the light and protect from drips.

Hi, @unkle_psycho , thanks for your replies.

That's right, I am seeing exactly these strips BXEB-L0590U-30E1500-C-C3 and BXEB-L0590U-40E1500-C-C3, my main idea is to mix those two strips and reinforce them with the cree xpe-2 660nm and 730nm. The idea of ​​using xpe-2 is because they are cheaper. Although I still don't rule out the XPE-3, how many XPE-3 do you think would be recommended for a space of 1.20 mx 1.20 m? something that is still not clear to me, why should it be executed at 10% capacity? Of course, in addition to prolonging its useful life.

Let me see if I understood, the English language is not my forte, I use the google translator. If I run the strips at 700 mA, don't I need heatsinks?
Strips of normal size. Are they 59 cm long?

I also thought about running each strip at 1050 mA, I imagine that in that current, I would need less strips, am I correct?

If I run the gen 3 strips at 1050 mA, it would have an approximate voltage of 19.5-19.6v and a power of 20w, with a flow of 149% that would represent between 3710 and 3735lm (this is approximate for a strip), this at a temperature of 25 ° C, if we take the least amount of lumens 3710lm / 20w = 185lm / W of efficiency.
This is speculative and by a rule of 3, if I'm wrong, you can correct me, please.

Also, it came to my mind that according to this page https://ledgardener.com/diy-led-strip-build-designs.../, if I used the previous GEN 2 model, I would have to use 24 strips and I would have an efficiency of 187 lm / w, but also consider that the 56 cm gene2 uses 112 diodes and the 59 cm gene 3 uses 120 diodes. Also that gene 3 is 20% more efficient.

What is not clear to me is the amount of strips to use, you say that depending on the power at which each strip is executed, it is the quantity. But how do we know that with that amount they reach the minimum requirements of the plant? Would it be according to the amount of lumens generated in total?

And according to another source of information that guided me, for flowering (which is the stage where I need more light) 400 to 800 umol / m2 / s are needed. Then the question arises, can I convert to PPFD from lumens?

From what I've studied, wouldn't it be better to be guided by the PPFD that each strip generates and not by the power? Am I fine in my reasoning? I'm new, and if I'm wrong, of course you can correct me.

Attached image of the graphs current vs. voltage and flux vs. current.

Greenery Bob wrote: ↑

Tue Jul 23, 2019 6:20 pm

With regard to these slim eb3 strips, does anyone have a good line on decent
enclosures with covers to mount them in? I am considering adding some strips
for under canopy lighting and would want to diffuse the light and protect from drips.

If you Google led lighting profiles you should be able to find something to protect them in your local area. Freight is expensive when importing extrusions so it's often better to buy locally. I will have a waterproof supplement lighting system soon if you can hold off for 2 months.

Hi, @TEKNIK Thank you for your prompt response, excuse my ignorance, but what are the IES files?
Would you be so kind as to explain to me please?
or if you don't have much time to explain, you will have a link that can read

jefemike91 wrote: ↑

Tue Jul 23, 2019 9:45 pm

Hi, @TEKNIK Thank you for your prompt response, excuse my ignorance, but what are the IES files?
Would you be so kind as to explain to me please?
or if you don't have much time to explain, you will have a link that can read

IES files are sort of like a 3D image of light, once a product is tested on a Goniophotometer an IES file can be created and used in a free to download program called DIALUX.
You can basically plan your grow room to any size on computer before making a purchase. This way you will know exactly how your light will perform before you have made a purchase.
The entire lighting industry uses IES files but horticutre is behind with it.
It only takes a few minutes to PAR map a room with different combinations of lights once you know how to use DIALUX.

Where can I download these IES files? Do you have a google drive or whatnot. Really interested in this technology. Thanks man!

TEKNIK wrote: ↑

Tue Jul 23, 2019 10:00 pm

jefemike91 wrote: ↑

Tue Jul 23, 2019 9:45 pm

Hi, @TEKNIK Thank you for your prompt response, excuse my ignorance, but what are the IES files?
Would you be so kind as to explain to me please?
or if you don't have much time to explain, you will have a link that can read

IES files are sort of like a 3D image of light, once a product is tested on a Goniophotometer an IES file can be created and used in a free to download program called DIALUX.
You can basically plan your grow room to any size on computer before making a purchase. This way you will know exactly how your light will perform before you have made a purchase.
The entire lighting industry uses IES files but horticutre is behind with it.
It only takes a few minutes to PAR map a room with different combinations of lights once you know how to use DIALUX.

Where can I download these IES files? Do you have a google drive or whatnot. Really interested in this technology. Thanks man!