Check these out if you want aluminum-backed LM561C strips at a lower price and higher density than the F-Strips:
https://www.ebay.com/itm/Quantum-board- ... SwuHdadxJF
https://www.ebay.com/itm/Quantum-board- ... SwnMBac9jT
Intro & Various "lm561C" board builds from Shenzen
Except that at 90CRI the LM561C doesn't have S6 bin (see here: https://www.samsung.com/led/support/too ... alculator/)ShowMe wrote: ↑Tue Mar 06, 2018 6:55 pmCheck these out if you want aluminum-backed LM561C strips at a lower price and higher density than the F-Strips:
https://www.ebay.com/itm/Quantum-board- ... SwuHdadxJF
https://www.ebay.com/itm/Quantum-board- ... SwnMBac9jT
Buying directly from Alibaba, like this guy did, the cost would be $7.5 (excl. shipping) per such a 96 diode strip with the more common 80CRI/S6.
I doubt this reseller even knows this: it's more likely he's repeating what the Alibaba factory told him. I'm tempted to write him a message and ask who he bought from, to be sure not to order anything from them.
Having said that, all these differences are relatively minor when looking at the bigger picture, and that's that LEDs are 30% more efficient than MH/HPS to begin with. Even with my original, very shitty Roleadro lights I was able to get some very nice results. Even it's not exactly what you were looking for, it's a great light and your plants will love it.
Last edited by majorana on Wed Mar 07, 2018 5:30 pm, edited 1 time in total.
As long as they are Samsung diodes I wouldn't worry much. There are photos to understand if they are 561c or 561b+, should be a 10% difference from c to b+, still good lights!
Probably any pcb producer could make these. So, what's the price?
Probably any pcb producer could make these. So, what's the price?
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I've been through this thread a few times now - I'm talking to bright about ordering some of their 2' (22")48pc 561c strips with aluminum core. Has anyone gone with then yet?
I've been through this thread a few times now - I'm talking to bright about ordering some of their 2' (22")48pc 561c strips with aluminum core. Has anyone gone with then yet?
That'd probably be where I start. I'd check the voltage of the board, then do the math to get a per-diode voltage, then compare to the different voltage bins of the LM561C. It's tough to say though because I'm sure there are many diodes that run at that same 2..6-2.9V each.
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