samsung hard strips

[Seriousbuds]

Here you go:

View attachment 3715477

The strips run 6 in parallel at a time, so 230mA each. I also digitized the Current vs Flux, Temp vs Flux, and eyeballed Voltage vs Temp charts from the LM301A datasheet.

That's 147% on the LM301A charts, with 150mA being typical current. Mid bin are 66 lumens at 150ma, soooo...1.47 * 66 * 96 die is 9313 lumens? Data sheet says 9380 for the L09, but that 9313 is at 85C, not 65C. So that 147% is pretty close.

At 1380mA we have 3.0125V * 230mA * 96 = 66.6W

At 700mA we have about 2.86V * 115mA * 96 = 31.6W

We land at 78% of typical lumens @ 115ma, with a 5% bump if you keep temps at 50C we get .78 * 66 * 96 * 1.05 = 5189lm @ 31.6W, or 164lm/W

Which lands us ~49.6% efficiency and about 2.27 umol/J, not too shabby. Unless I fucked up. Which is better than even odds

Wow. I was not expecting 50% efficiency! This is exciting.

 

[OneHitDone]

Yeah, that's what plants do. Use light cues to figure out how to grow in changing conditions, like the r:fr shade avoidance response you are probably familiar with. Google phototropism, blue light, auxins. You've just inadvertently created and witnessed a crude form of steering growth, not seen evidence for plants craving a particular spectrum.

If in theory the plant is just receiving a cue to put out a certain type of growth, then why would it in fact be steering towards that specific source and not just stretching upward or showing more compactness for example?

 

[Seriousbuds]

I'd like to build 6 panels of these for side lighting.

Anyone have driver recomendations? I think I could do two strips per panel so I'd want to run 2 strips per driver.

I'm not sold yet on which rigid strip I want but I'm gonna most likely go with the cheapest solution

 

[MrTwist1]

I'd like to build 6 panels of these for side lighting.

Anyone have driver recomendations? I think I could do two strips per panel so I'd want to run 2 strips per driver.

I'm not sold yet on which rigid strip I want but I'm gonna most likely go with the cheapest solution

The Samsung L04 is pretty cheap at around $11 each. They need approx 24V each; so to drive two you'd need 48V from the driver. It depends how hard you want to run them, as to which driver to choose, but Meanwell LPC-60-1050 is a pretty nice fit. This driver is not dimmable tho. In fact most of the drivers around this size are not dimmable. Probably for sidelighting that will not be an issue tho.

 

[JorgeGonzales]

If in theory the plant is just receiving a cue to put out a certain type of growth, then why would it in fact be steering towards that specific source and not just stretching upward or showing more compactness for example?

Google phototropism, blue light, auxins.

 

[Big smo]

I'd like to build 6 panels of these for side lighting.

Anyone have driver recomendations? I think I could do two strips per panel so I'd want to run 2 strips per driver.

I'm not sold yet on which rigid strip I want but I'm gonna most likely go with the cheapest solution

I grabbed 2 lpv-20-24 for 4 strips. 1 driver for 2 strips

 

[Seriousbuds]

@robincnn were people saying you could butcher an old laptop charger and use that instead of a driver for these strips? If so I'm going to be raiding my local Goodwill..

 

[robincnn]

@robincnn were people saying you could butcher an old laptop charger and use that instead of a driver for these strips? If so I'm going to be raiding my local Goodwill..

yes you an use the laptop power supply. They will be around 18-19V i think. Constant voltage type.
You will have to find a LED strip that will use the same voltage as the laptop power supply. Lumileds has strips for 18V
You can search on digikey for strips by voltage
http://www.digikey.com/product-search/en/optoelectronics/led-lighting-cobs-engines-modules/525140

or You can hook up an LDD DC-dc driver, then you get Constant current with upto 15V. problem is lot a whole lot of option for under 15V. The 12V strips are not as powerful.
Just get a new meanwell driver ,,, it will be easier.

 

[Seriousbuds]

yes you an use the laptop power supply. They will be around 18-19V i think. Constant voltage type.
You will have to find a LED strip that will use the same voltage as the laptop power supply. Lumileds has strips for 18V
You can search on digikey for strips by voltage
http://www.digikey.com/product-search/en/optoelectronics/led-lighting-cobs-engines-modules/525140

or You can hook up an LDD DC-dc driver, then you get Constant current with upto 15V. problem is lot a whole lot of option for under 15V. The 12V strips are not as powerful.
Just get a new meanwell driver ,,, it will be easier.

What versions would you suggest? I'm going to start with 16 strips on two 2ft long bars. Ideally I'd like to run them off a single driver per bar, or just least drivers possible
..
I'm looking for the cheapest option as far as drivers go, which is what made the laptop charger thing so appealing. (I'm a noob at this though so maybe it's best to just stick with meanwell)

 

[AtterStiga]

What an intriguing, if somewhat confusing thread. I learned about cobs in the end, so I'll learn about this too. I'm super interested in constructing a light for lettuce, herbs and getting other plants ready for our short summer. Is there a strips-for-dummies source of info out there? I can't seem to find anything on Google, but I don't really know the right words.

 

[Seriousbuds]

What an intriguing, if somewhat confusing thread. I learned about cobs in the end, so I'll learn about this too. I'm super interested in constructing a light for lettuce, herbs and getting other plants ready for our short summer. Is there a strips-for-dummies source of info out there? I can't seem to find anything on Google, but I don't really know the right words.

I plan to do the exact same thing with these strips. At ~$50 for 2ft of lighting it's super affordable!

It sounds like wiring a few strips to a Meanwell is the ticket. However this is the area I'm not sold on fumbling my way through quite yet, so I'll wait for more information, some pictures or a guide.

My only issue is not knowing what I can run with these strips. Other than that this is dead simple, and you dont even have to drill and tap.. just use magnets to hold the strips on

 

[Seriousbuds]

Does anyone know if I could run 4x Samsung influx 02 on an LPV-60-48?

 

[AtterStiga]

I plan to do the exact same thing with these strips. At ~$50 for 2ft of lighting it's super affordable!

It sounds like wiring a few strips to a Meanwell is the ticket. However this is the area I'm not sold on fumbling my way through quite yet, so I'll wait for more information, some pictures or a guide.

My only issue is not knowing what I can run with these strips. Other than that this is dead simple, and you dont even have to drill and tap.. just use magnets to hold the strips on

I saw the pics, but aluminum isn't supposed to be magnetic. Just googled to make sure lol. Is there something I'm missing? Don't get me wrong, nothing would beat getting away with them, drilling is no fun. Would be awesome if there was a guide like for cobs. I already know a lot more about electricity and shit after dealing with cobs, but I'm still a retard lol.

 

[Seriousbuds]

I saw the pics, but aluminum isn't supposed to be magnetic. Just googled to make sure lol. Is there something I'm missing? Don't get me wrong, nothing would beat getting away with them, drilling is no fun. Would be awesome if there was a guide like for cobs. I already know a lot more about electricity and shit after dealing with cobs, but I'm still a retard lol.

Wait this has me wondering if I'm retarded as well. Maybe that guy I saw doing this just put a magnet on the opposite side?

 

[Seriousbuds]

@robincnn Couldn't I run two inFlux 01's on an 18-19v laptop charger? Strips are 9.1v each with a minimum of 8.3v.

Alternatively, I'm not sure what the best meanwell driver would be for 4 of these on a bar.

 

[bri77]

Wait this has me wondering if I'm retarded as well. Maybe that guy I saw doing this just put a magnet on the opposite side?

lol, yeah, he has magnets on top as well.

 

[robincnn]

@robincnn Couldn't I run two inFlux 01's on an 18-19v laptop charger? Strips are 9.1v each with a minimum of 8.3v.

Alternatively, I'm not sure what the best meanwell driver would be for 4 of these on a bar.

2x 9.1 = 18.2V, 2x8.3= 16.6V,
Driver 18-19,
You can try... you will have to check the current with a digital multimeter.
The driver may push too much current through the strip.

 

[CobKits]

lol, yeah, he has magnets on top as well.

 

[Big smo]

I'm running mine on 80/20 extrusion with thermal paste. Kinda messy in the back middle since it's not flat and also using thin kapton tape down the edges.

 

[Seriousbuds]

This driver may be a p

2x 9.1 = 18.2V, 2x8.3= 16.6V,
Driver 18-19,
You can try... you will have to check the current with a digital multimeter.
The driver may push too much current through the strip.

Top tier noob here: I can do this by stripping the wires of the charger and measuring positive and negative wires with a multimeter, right?