LED lightning help
- Thread starter Michal.dee
- Start date
coreywebster
Well-Known Member
The ones in the pic?
Might not be the most efficient but they will grow.
Do you have any spec on them? Manufacturer or any info on drivers or Diodes?
Might not be the most efficient but they will grow.
Do you have any spec on them? Manufacturer or any info on drivers or Diodes?
Michal.dee
Member
Yeah, there’s 3 in photo and I got 6 of them.
Unfortunately I don’t. Just know the diodes have these “lenses” which magnify the light output ? Not too sure my self.
I’ll try find out more and upload better pics of lights
coreywebster
Well-Known Member
Cool, yeah post more pics especially any details on labels ect if there are any.
Not knowing anything about them I would aim for 50w per square foot.
Michal.dee
Member
Here’s few photos of them, they need a clean lol. They are very very bright. Hope this helps.
Attachments
Last edited:
coreywebster
Well-Known Member
Well they used meanwell drivers which are great, those ones are discontinued but still offer 91% efficiency.
But still that's a good sign, they wouldn't use quality drivers along side the cheapest diodes, however LEDs have come along way in the last few years so the chips are probably nothing amazing.
They will still grow weed though, guessing were looking at something 4k or 5k in spectrum, at least they appear to have a cool white on my laptop.
Whats the plan? Supplemental lighting or main source of light?
I wondered if it would be worth while hacking them and swapping out the diodes for something more efficient but im not 100% what the best option would be. Plus you never asked about that either .
@Randomblame what do you make of these fixtures? Any thoughts?
But still that's a good sign, they wouldn't use quality drivers along side the cheapest diodes, however LEDs have come along way in the last few years so the chips are probably nothing amazing.
They will still grow weed though, guessing were looking at something 4k or 5k in spectrum, at least they appear to have a cool white on my laptop.
Whats the plan? Supplemental lighting or main source of light?
I wondered if it would be worth while hacking them and swapping out the diodes for something more efficient but im not 100% what the best option would be. Plus you never asked about that either .
@Randomblame what do you make of these fixtures? Any thoughts?
Michal.dee
Member
Budzbuddha
Well-Known Member
I say if the plants are responding ... use them .
Michal.dee
Member
Think I will, it always gives that extra light.
Randomblame
Well-Known Member
Well they used meanwell drivers which are great, those ones are discontinued but still offer 91% efficiency.
But still that's a good sign, they wouldn't use quality drivers along side the cheapest diodes, however LEDs have come along way in the last few years so the chips are probably nothing amazing.
They will still grow weed though, guessing were looking at something 4k or 5k in spectrum, at least they appear to have a cool white on my laptop.
Whats the plan? Supplemental lighting or main source of light?
I wondered if it would be worth while hacking them and swapping out the diodes for something more efficient but im not 100% what the best option would be. Plus you never asked about that either .
@Randomblame what do you make of these fixtures? Any thoughts?
Side or corner lights! I woiuld probably remove the lenses unless you want to bridge a larger distance. Even the best PMMA means only ~95% transmission rate or 5% light loss! Usage only makes sense when you're forced to bridge a higher distance. Focussing the light can for instance help to avoid light losses on the walls.
One could reuse heat sinks and driver and just change the LED's. 8 XPG3's mixed with 4 hyper-red Osram Square would deliver a nice all-in-one Spectrum and could handle up to 1A.
You could also use red, deep- and far-red diodes to create a something to push the emerson effect.
Last edited:
Michal.dee
Member
I actually thought about maybe using them as side or corner lights. I’ll definitley look into changing the LED’s. Very interesting. That’s for the response !
Randomblame
Well-Known Member
Yeah, heat sinks are pretty expensive and this ones are clearly made for passive cooling(wider fin spacing).
Seems they are ~8"/20cm long!?
If so, you could connect each 3 heat sinks lengthwise to get two 24"/60cm "bars". Reused this way you could use them for 2 Samsung H-Influx L09 strips(same LM301b like QBv2) for instance and if there is enough room you could add a red/deep-red string between the 2 strips. Each bar could run with ~100-150w depending on drive current and how much deep-red you add but efficiency would be awesome. +2,5μMol/J(W) at system level is pretty easy to get with such a combination.
How wide is the mounting area?
Michal.dee
Member
I’m not exactly sure on the length of the heat sinks but I’ll check when I get home soon. So I assume you mean just taking out the current LEDs and replacing them with the Samsung h-influx strips and possibly red string ? I’m using a meanwell to power it all up which runs at “+36v” if I’m not mistaken.
The l&w of tent is about 2m x 1.2m if I’m not mistaken so Space shouldn’t be a problem.
Randomblame
Well-Known Member
Yepp, that would end up with top notch efficiency. But your area is 2,4m² or ~26ft² which means you need at least 800-900w. Rule of thumb with latest generation top bin LED's is around 30-35w per squarefeet to get ~800-900μMol/s/m². You would need 6 such bars each made of 3 heatsinks so 18pcs in total. If you can get them for free, okay! If not its maybe better to build a frame and just use alu U-channels.