Board from Europe
- Thread starter G84
- Start date
They will one way or another as the BSI standards are at least equal, if not higher, than EU standards so will have to be met.
There will be no change in the situation, the applicable standards, and therefore the hoops that need to be jumped through to get said certification, will be the same.
UK already does, it's called the British Standards Institute.
Then you have things like ISO standards and so on which will not change either.
I took it as personal and asked vendor for a quick video with ppfd reading. Now everybody can see data are real and not bull**it
Stephen.zonk
New Member
I would recommend.
Spectrolight. pl
Spectrolight. pl
I would not.
240watt from a 2 cob fixture will have much lower efficiency and can not compete with uniformity from a 2 board fixture
Last thing....a 4 board fixture using 515watt will have a better watt/€ price,comparing to spectrolight and will destroy it both on efficiency and uniformity
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guy_incognito251
Well-Known Member
Samsung LM301B board from Germany:
https://led-tech.de/en/ZEUS-308-High-Performance-PCB-4000k
Only available in 4000K and 5000K
https://led-tech.de/en/ZEUS-308-High-Performance-PCB-4000k
Only available in 4000K and 5000K
Rocket Soul
Well-Known Member
Was about to post the same! 3000k supposed to be coming soon. Similar spec to g84s board, but half the size.
Also worth to mention: led-tech.de also sell osram 660nm strips at 25e / 25 W.
Flowerbologna boards x 4= 320 versus
Zeus 308 in 4000k x 4 + 2 x 25w Osram 660nm= 65x4 + 2x25= 310
Wrong math.
Zeus 308 x 4=279.60
At this price you will get 308 watt of light,passive cooling.
4 projects 342 are 517watt of light with no need for heatsink
If you want more than 80 watt from Zeus 308, add heatsink cost.
I prefer a board that cost 10€ more, with better coverage (twice the surface=unifiun spread of light accris canopy) and no need for heatsink.
Try to compare reading from hlg550 at 515w to 4 projects 342 board...you will easily find out who is the winner,considering uniformity and total PPF output. It is better a board with higher surface than a board that put too many chip close together
Rocket Soul
Well-Known Member
Im specing lights for a friend, who is redoing his grow from hps to led and cmh. These are just alternatives that we are testing. Price is really not that important if its less than 500/ m2.
I got 4 342 boards in, to compare with another few setups. Im thinking 6 342 boards for 1x2 m. At 2100ma each, 2.7 ppf/w on board level.
The Zeus boards are nice cause id use 4 for 1m (my friend prefers 1 light fixture/m2), and while im buying from ledtech i can just as well get some red enhancement and far red. These boards will be around 2.89 ppf/w where im planning on running them so a slight efficiency gain. Also variable spectrum, being able to bring in 660/730/4k depending on need.
4 boards+100w of 660 is around 380 euros (sorry about the math before, was posting without the details in front of me). I think thats an excellent deal. All these will be tried and tested and we will go for what works out best according to his needs.
I got 4 342 boards in, to compare with another few setups. Im thinking 6 342 boards for 1x2 m. At 2100ma each, 2.7 ppf/w on board level.
The Zeus boards are nice cause id use 4 for 1m (my friend prefers 1 light fixture/m2), and while im buying from ledtech i can just as well get some red enhancement and far red. These boards will be around 2.89 ppf/w where im planning on running them so a slight efficiency gain. Also variable spectrum, being able to bring in 660/730/4k depending on need.
4 boards+100w of 660 is around 380 euros (sorry about the math before, was posting without the details in front of me). I think thats an excellent deal. All these will be tried and tested and we will go for what works out best according to his needs.
Rocket Soul
Well-Known Member
Moflow
Well-Known Member
Did you see these?
Pcb size:900*280mm,40s13p lm561c S6 diode.
20s4p Osram 660nm diodes.this design mixed lm561c diode with Osram LED.
It was from another thread.
@chuckduck was offered these, from China.
Rocket Soul
Well-Known Member
I saw a mention of them on the other thread. But unless these boards absolutely blows away the other boards were testing i think im going to source from eu suppliers. Price is not so much different when you add shipping/handling/customs and there are some good offerings here eu now. Maybe even better than the US.Did you see these?
Pcb size:900*280mm,40s13p lm561c S6 diode.
20s4p Osram 660nm diodes.this design mixed lm561c diode with Osram LED.
It was from another thread.
@chuckduck was offered these, from China.
Rita is allright but not the easiest person to deal with. Wants to sell what she has and not necessarily what you need.
And that board being s6 and osrams being genuine is a laugh. BTW is there a price on that board?
The 800 boards will probable end up as side light at maybe 100w each.
Look closer at the likes of AliExpress, an example is a MarsHydro tent and light, 70*70*120cm and their "300W" light for €120 plus €12 shipping to me as the supply is held in Germany for EU customers so there is no "handling/customs" to consider whatsoever as it is seen as being sent from within the EU.
I ain't recommending the package, I'm just saying to look closer at some things because you may get a pleasant surprise.
5 or 6 project 342 board will run passive at 100-120watt each,no heatsink
BTW....600 watt of this light will be enough for a 5x5 tent (150cmx150cm)
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Rocket Soul
Well-Known Member
Im afraid both Mars an Aliexpress are big nonos for me. Even if from within the EU
Problem with buying these chinese crappy lights are many: import/customs: extra charges but also here, if if t thru regular post the company who handles the custom process are the worst cust service i ever found. No possibilities to ever get thru to speak with someone if something goes wrong.
Cuality/warranty/returns/shipping:
Only guarantee about cuality is that it will not be what is advertized. It arrives broken/breaks after 6 months: return to china at own expense and hope u get a new one. Shipping: quite expensive.
Meanwhile we have offerings in EU of genuine lm301 with reasonable prices. German manufacturer. Also, could buy thru my friends business so can deduct VAT.
In a few weeks we will test out china boards versus the g84 / led 342 boards to see for ourselves.
Next buys we do will probably be geared more towards variable spectrums, high Cri, red boost and the like.
May wanna try 4000k + 660 and 730 suplementation and maybe bridgelux vesta strips.
Rocket Soul
Well-Known Member
A picture of samsung packaging, even with bin info on it, is not really a sign of original diodes, at least if the the diodes were mounted by the alibubbas.
We bought from china, and the seller proudly showed us photos of original packaging, even if we never asked for it. The boards came with lm561b anyway. But it was something we expected and was ok, we are going to run those boards at 40% of max and will still have ok efficiency.
Edit @Moflow yes, the 800led fotop boards.
Seems like many china companies do this. Or maybe even they get conned by their suppliers who might be a samsung factury but not actually samsung.
Personally i rely on tests done by members or reasonably reliable vendors. Also if the seller can describe in detail their cuality control process.
As for the flower bologna board: numbers look good so we are trying them out.
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