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you can and i have will find the links if you like will look at my message board an alibaba hlg confirmed to me a while back who makes there boards as i stumbled across them on alibaba in regards to the lm561c s6 az bin this is why you need to do your research and ask the correct questions...

with out getting a better pic so that i can properly count the leds with working out using the size of drivers i think its about 154 leds in the 6500k string 42v / 2.83v = 14 (14 leds) series then they are connected parallel in 11 groups = 154 leds each pcb bar gets 765ma as 7.65a /10...

these are just chinese boards that someone has imported these are all made in china even propper quantum boards are they are cheaper on alibaba you just need to ask the proper questions about components and the voltage im going to start selling these types of boards soon and other custom boards...

would any one think this light needs any uva in the 480-400nm or is ok due to the 6500k

only had a quick look last was late haha, and couldnt see nichia effiency stats on there data sheets i did see that they do a 75ma version that gives about 78lm and there 150ma verions give 149lm would you say that the ones used in these lights are the 2.65/ 2.80v ones not the 5.95v then I was...

yes but easyer to make as theres only 2 types of led (3 colors) so do you think its a "logharhymical" layout all the way along then or just at the ends

the clustering seems to solve the low par at the edges of led lights i supose you could also do this by driiving leds at the edges more than the others or using brighter high power leds at the edges

looking at if i attempted to make these could use lm302c there loads brighter more voltage though

thanks found them just looked at both the samsung has slightly better numbers but only just they are 757 Nichia i think as on the pics you can just make out the notch in the corner are the 660nm red also Nichia then ? are the Nichia s lots cheaper then ?

ive just had a quick look the only ones that look simular are the NJSW172B but they have the black marks on the front the ones in there light does not seem to have them

so not lm301b they must look identical do you know what nichia product code / led thay are so i can checkout a data sheet

does any one know what 660 red s these are im guessing oslon ssl 80 perhapes but could be anouther lens

thats why im planning on making the same my self as the leds are like 4p each i was playing with this idea any way but was not sure if i was going to make a chilled board type light with clusters or a bar . this option would be alot cheaper as its mainly lm301b leds with only 12 osrams per pcb...

also growmau5 took a look at them too

this is a good vid showing them

the only reason im looking into this is because of the Evolve EV700 https://www.progrowtech.com/evolve-series/ they run both at the same time with some 660nm and they recon that with both going its close to a 4000k and also you can turn the blues up during veg and and reds down etc so...

hi is any one running 2700k with 6500k if so whats the correct ratio 50/50 or 40/60 or ??

your prob better running 200w ish drivers as there lots cheaper also if you went for vero29 s you would get more light for you money prob 6-8 of them to equal a 1000w hps

theres loads on alibaba same leds as quantum boards and some will be the same manufacture

Well sonoffs have arrived then , i think ive bought too many haha