LED FAQ) Building and DIY

[jikko77]

so about 114g dry?
.76g per watt?
was that ur first grow?
how is that compared to usual?


buds look rock hard, well done

how did you calculated it?

third grow ever.

if i do total weight/watt it's 0.76, yes.

if we consider:
Total light wattage
Total flowering time in days
Light cycle hours
Total yield in grams

1) Divide total lamp wattage by 1000 to get Kw/h.
150w/1000 = 0.15.

2) Multiply this figure by the hours of the light cycle.
0.15 x 12 = 1.8

3) Multiply this figure by the number of days in flowering.
1.8 x 66 = 118.8

4) Now divide the gram yield figure by the kilowatt figure.
114/118.8 = 0.95g per K/w

either way, it's good, so far the best one i've harvest

 

[Xickle]

mouser will charge you VAT at checkout

if u are set on mouser consider that 3 of the 3070 on that driver is your cheapest best option it will give u a lot more light than 2 of the 3590

in ur 60x70
3x3070=150w=759ppfd
2x3590=100w=550ppfd aka shit
3x3590=150w=840ppfd


3070x3 is ur best option dude


or I suggest to get the B version dimming not A also

http://eu.mouser.com/ProductDetail/...5PRBMPTWcaZHCrgNWzuwCgvul17Yhc4SR7bxBQ1QJjg==


use
http://eu.mouser.com/ProductDetail/...C15B100K/?qs=sGAEpiMZZMv3em63uDEI/GTMqIeeNcxt

to dim


unfortunantly mouser only has the TE connectivity cob holder things and they r a bitch to work with

i have 4 of the plastic kind but you will need to solder, if u want i can mail those to you

have you looked at cutter though? they have the best prices, i still had to pay VAT when i recieved the package from them but i think that is where you should try first

(just go to check out in mouser and you will see the VAT)


http://www.cutter.com.au/proddetail.php?prod=cut2965

or take these(36euro with heatsink come on)
http://www.cutter.com.au/proddetail.php?prod=cut2901

http://www.cutter.com.au/proddetail.php?prod=cut2905

http://www.cutter.com.au/proddetail.php?prod=cut2792

http://www.cutter.com.au/proddetail.php?prod=cut2860

use the code CUTANDROLL for a discount(10%?)

That's some really helpful information. Thanks!

I'm going to go with the 3x CXB3070's, and put them on these fans with heatsinks because they look cool
Or these ones, that everybody seems to be recommending. (maybe better, so I don't get wires caught in the fan...)

For the holders, I can order these holders from jerry, as they are cheap enough for the customs to not charge me extra(under 50€).

I've also checked the packages you listed. I like those kits, but the shipping costs are insane.. almost 80€ for shipping, and that's without the customs costs which are an extra 20% of the total cost. So that's a no-go for me.

And congrats on #1000 post!

 

[Dion]

That's some really helpful information. Thanks!

I'm going to go with the 3x CXB3070's, and put them on these fans with heatsinks because they look cool
Or these ones, that everybody seems to be recommending. (maybe better, so I don't get wires caught in the fan...)

For the holders, I can order these holders from jerry, as they are cheap enough for the customs to not charge me extra(under 50€).

I've also checked the packages you listed. I like those kits, but the shipping costs are insane.. almost 80€ for shipping, and that's without the customs costs which are an extra 20% of the total cost. So that's a no-go for me.

And congrats on #1000 post!

if u order from jerry you can get the cobs from him too, he will put a lower value on the package, ask him to send it china post not DHL

ofcourse u will need to know the base size of the sink to fit the holder
take a look at the data sheet for the ideal holder i think its 65mm? cant remember

the 20 will not work

you want
https://www.arctic.ac/eu_en/alpine-64-plus.html

 

[Koondense]

@xicle
For ordering in Slo, get your drivers and arctic coolers(64plus) from Reichelt.com

 

[Dion]

oh yeah forgot about those guy good tip

 

[Mr Celsius]

some of them are

for example the 1825 is about 20% more efficent at 50w vs a cxb3590 and about the same when run at 70w

so if u run them at 70w ur $ per watt increase while in reality they cost about the same/a little less than cxb3590

plus if u dont plant to use optics as many of us dont then u dont need to use cob holder, teh cobs have holes and can be mounted with a m3 screw directly to the heatsink


https://www.cdiweb.com/FeaturedProducts.aspx?type=11131&manf=3039&cate=3039:57&NavType=2&sd=false


this one for example

https://www.cdiweb.com/ProductDetail/CLU0581825C4273H5K2-Citizen-Electronics-Co-Ltd/590999/



I think its just a touch too early to find this gen 5 citizen at cheap prices perhaps in a few months


etc

https://www.cdiweb.com/ProductDetail/CLU0581825C450AL7K3-Citizen-Electronics-Co-Ltd/591009/

I see. The voltage makes it a little tricky, because the mean well 1.4a driver is only 142v and each 1825 pulls 52v. I'll have to look around for a different driver if I do a side by side.

I also agree pricing will come down as gen 5 become more available. Interested in seeing Vero 29 gen 7 in comparison.

I personally am using optics, but don't have enough experience to really comment on their pros vs cons. Not having the option for optics would be unfortunate, but I'm just starting to learn about the citizen and don't know what is and isn't available.

thanks

 

[Dion]

I see. The voltage makes it a little tricky, because the mean well 1.4a driver is only 142v and each 1825 pulls 52v. I'll have to look around for a different driver if I do a side by side.

I also agree pricing will come down as gen 5 become more available. Interested in seeing Vero 29 gen 7 in comparison.

I personally am using optics, but don't have enough experience to really comment on their pros vs cons. Not having the option for optics would be unfortunate, but I'm just starting to learn about the citizen and don't know what is and isn't available.

thanks

i always apreciate ur insight and perspective thanks

yeah there are cob holders and optics for the citizen

drivers are an issue but u ccan run these a bit harder and fill out a meanie

the vero gen 7 are exciting, actually its all exciting

Ive never been a cree fan boy they just had the best, im glad to see others giving them a run for thier money

if cree doesnt come out with the CXC that blows all these away in the next few months thier stocks will plumet

 

[Xickle]

if u order from jerry you can get the cobs from him too, he will put a lower value on the package, ask him to send it china post not DHL

ofcourse u will need to know the base size of the sink to fit the holder
take a look at the data sheet for the ideal holder i think its 65mm? cant remember

the 20 will not work

you want
https://www.arctic.ac/eu_en/alpine-64-plus.html

I've made the order with jerry! He has stuff much cheaper than mouser so in the end I chose to go for 3x CXB3590, and got two with a reflector(for above the plants) and one with glass(for the middle). Solderless holders were included! I even got the dimmable HLG-120H-C1400B driver from him.

I took some precautions regarding customs so hopefully they will not be a problem, but in any case the order was much cheaper than it would have been at mouser anyways!

@xicle
For ordering in Slo, get your drivers and arctic coolers(64plus) from Reichelt.com

Thank you for the suggestion! I ordered the coolers from the site!


Appreciate all the help guys, I'll post pics of my closet once it's all put together! Might even put in some progress pics!

 

[jikko77]

@dion: i've got the order on going. no idea when it will go on deliver, yet.

in the end i've ordered 4x cxb3590 3k 90 cri (the best bin/higher cri i can find online, actually the typical cri should be 92 according to the datasheet ) and 1x cxb3590 5k 70 cri.

the monos will be order another time, i'm still looking for a decent deal for the one i like.

 

[quill]

ty for thread... I've referred to page 1 a couple dozen times over the last week

Would 3x Cree CXB3590-0000-000N0HCD35G 3500K/2.4a/36v work OK in a 2x2 sf space?

If so, would the Mean Well HLG-120H-C1400 driver be appropriate/too wimpy?

tia

 

[Arf]

ty for thread... I've referred to page 1 a couple dozen times over the last week

Would 3x Cree CXB3590-0000-000N0HCD35G 3500K/2.4a/36v work OK in a 2x2 sf space?

If so, would the Mean Well HLG-120H-C1400 driver be appropriate/too wimpy?

tia

A 2 x 2 ft. is really a 4 COB scenario, if the budget wont stretch then driving 3 COBs a bit harder will do.

Because it's a square space then you would probably want to arrange them in something like an equilateral triangle. You will have to work our the spacing from the Cree Spatial Distribution curve on page 12 of the CXB3590 data sheet. The goal is to get the most even spread with minimal overlap hot spots.

Using 1,400mA driver, you are running them @ 50W each, which is slightly low for 4sq. ft. (37.5W/sq. ft.) I would drive them with a 1,750mA driver in that space.

 

[Dion]

ty for thread... I've referred to page 1 a couple dozen times over the last week

Would 3x Cree CXB3590-0000-000N0HCD35G 3500K/2.4a/36v work OK in a 2x2 sf space?

If so, would the Mean Well HLG-120H-C1400 driver be appropriate/too wimpy?

tia

hi

short answer yes

longer answer 3 cxb 3590 at 1.4a will fill that space nicely
so take the 1.4 not 2.4( i assume that was a type?)

or sure if you can afford you can take 4 cobs and in that case use an even lower drive current like 1050

 

[Deuce5]

It seems that a 1.4A driver is the standard, but I found a 1.67A on sale and it appears to line up with everything I read in this thread. Is it overkill for my area. Thoughts on this setup...

2x2x8 closet

LED - 4x

http://www.mouser.com/Search/Produc...tualkey57280000virtualkey941-CXB35900N0HCB35G

LED driver 4X

http://www.jameco.com/z/LPV-60-36-M...tput-36-Volts-1-67-Amps-60-Watts_2102625.html

 

[Roasty McToasty]

It seems that a 1.4A driver is the standard, but I found a 1.67A on sale and it appears to line up with everything I read in this thread. Is it overkill for my area. Thoughts on this setup...

2x2x8 closet

LED - 4x

http://www.mouser.com/Search/Produc...tualkey57280000virtualkey941-CXB35900N0HCB35G

LED driver 4X

http://www.jameco.com/z/LPV-60-36-M...tput-36-Volts-1-67-Amps-60-Watts_2102625.html

Should be fine as you have some height to work with. I recommend some dimming if you can find some dimmable drivers. It really makes for versatile lamps.

 

[Dion]

It seems that a 1.4A driver is the standard, but I found a 1.67A on sale and it appears to line up with everything I read in this thread. Is it overkill for my area. Thoughts on this setup...

2x2x8 closet

LED - 4x

http://www.mouser.com/Search/Produc...tualkey57280000virtualkey941-CXB35900N0HCB35G

LED driver 4X

http://www.jameco.com/z/LPV-60-36-M...tput-36-Volts-1-67-Amps-60-Watts_2102625.html

yeah its overkill

yeah it will work great

id take this driver though
http://www.jameco.com/z/HLG-185H-C1400B-Mean-Well-200W-Single-Output-LED-Power-Supply_2189345.html

and dim it down

or you can get the
http://eu.mouser.com/ProductDetail/...5PRBMPTWcac5aDEswMPfpXvB7XC56LUDfh9dwJXplLQ==

for a light that can do double ur space and then dim it down to like 150w but still got the horse power if you move to a bigger space

 

[Deuce5]

yeah its overkill

yeah it will work great

id take this driver though
http://www.jameco.com/z/HLG-185H-C1400B-Mean-Well-200W-Single-Output-LED-Power-Supply_2189345.html

and dim it down

or you can get the
http://eu.mouser.com/ProductDetail/...5PRBMPTWcac5aDEswMPfpXvB7XC56LUDfh9dwJXplLQ==

for a light that can do double ur space and then dim it down to like 150w but still got the horse power if you move to a bigger space

Are you recommending those drivers as for each led, so I would need 4 of either one?

 

[Dion]

Are you recommending those drivers as for each led, so I would need 4 of either one?

no I'm recommending running all 4 cobs off the 1 driver( thats why i recommend this option its only a few bucks more than what you are looking at and it has more total watts BUT is dimmable because the amount of light you are suggesting is equivalent to about a 400w has)

IF you decide u must have 4 cobs it will be better to have dimming,

the drivers i linked are B version so you will rig up a pot and dim 10-100%

 

[Deuce5]

no I'm recommending running all 4 cobs off the 1 driver( thats why i recommend this option its only a few bucks more than what you are looking at and it has more total watts BUT is dimmable because the amount of light you are suggesting is equivalent to about a 400w has)

IF you decide u must have 4 cobs it will be better to have dimming,

the drivers i linked are B version so you will rig up a pot and dim 10-100%

[URL=https://www.icmag.com/ic/picture.php?albumid=60371&pictureid=1550600&thumb=1]View Image[/url]

I'm getting the feeling that 4 cobs is not needed, am i reading too much into your last post? Looks like 2 cobs maybe a option, for a equivalent of ~200W. I wanted 4 so that I would have even lighting. I thought I had this figured out, what would you suggest for a 2x2x8 space?

 

[Arf]

I'm getting the feeling that 4 cobs is not needed, am i reading too much into your last post? Looks like 2 cobs maybe a option, for a equivalent of ~200W. I wanted 4 so that I would have even lighting. I thought I had this figured out, what would you suggest for a 2x2x8 space?

4 x CXB3590 COBs at 50W ea. are not the quite the PAR equivalent of 400W HID, even the expensive discrete Cree horticultural reference light doesn't achieve that efficiency, and it's latest tech with a lot of 660nm red LEDs.

Use 4 x COBs as you planned to get the square coverage, or you will get way less bud.

You can use 4 x CXB3070 3500K BB bin, or Vero 29, if you are trying to go cheaper, but it won't save that much up front and you will burn the savings in kilowatt hours.

If you watch some of the Growmau5 videos, you can see he gets his best LED yields at 1 x CXB3590 3500K per sq. ft. so in a 4 x 8 foot grow he used 32 of them @700mA about 27W each for 1.9gm/Watt yield. He has said next run will be at 1050mA to see how much difference that makes.

Here is one of his harvest videos, well worth a watch and you can see the COB layout.
https://www.youtube.com/watch?v=iT5ivLc3ZFY

 

[Dion]

I'm getting the feeling that 4 cobs is not needed, am i reading too much into your last post? Looks like 2 cobs maybe a option, for a equivalent of ~200W. I wanted 4 so that I would have even lighting. I thought I had this figured out, what would you suggest for a 2x2x8 space?

in short yes you have this figured out, but you wouldn't want to run 4 cobs at 50w each because that is going to be very intense

you could run 4 cobs at like 25-30w each with dimming, which is what I'm suggesting

or use 2 cobs and run each at around 2100mA

well my approach to LED is not always echoed through the LED nerd community(see post below) because as I said at the beginning of this thread LED tech is always getting better and the cost just isn't worth it for large scale, but then u see growers running up to 30 cobs at 20w each so i guess money isn't a factor for everyone

Cob per sq ft is a good way to distribute light evenly BUT if you don't need all those watts it cab be costly when using the biggest and baddest cobs from cree 3590

go with what u had planned, I'm just saying that dimming in ur case will be a great tool so its worth paying an extra 10 bucks for it

4 x CXB3590 COBs at 50W ea. are not the quite the PAR equivalent of 400W HID, even the expensive discrete Cree horticultural reference light doesn't achieve that efficiency, and it's latest tech with a lot of 660nm red LEDs.

Use 4 x COBs as you planned to get the square coverage, or you will get way less bud.

any reason or back up for this statement?

CXB3590 @ 1400mA @ 56% efficiency= around 28 par watts

28x4= 112 PAR watts

400w has @ 36% efficiency(assuming new bulb and reflector) = 144 PAR watts

pretty close no? like 25% more with 400w hps vs 200w LED ok then compare the YPF... nah all good