Multichip LED, Remote Phosphor - Guess who it is.

Yeah, it's been fun. I enjoy the time I spend with my plants. Every night at ~10:00 I'm in my flower tent pretty much at lights on to check the girls out. I look forward to it.

I think I might get rid of the yeast jug and hook up the draft inducer motor I pulled from an old furnace. It's probably ~50-80cfm depending on the air resistance, 3" exhaust. There needs to be a mechanical load on either the intake or the exhaust otherwise the motor will spin too fast and draw twice as much current; it's meant to be run with a negative pressure load on the intake. I'm thinking I might just gorilla glue a few sheets of felt over the intake. I might even be able to get rid of the dehumidifier also, with there being that much more air circulation, Idk. Would open some floor space.

Swapped a 36W panel for the 50W Warm White spot from the veg room. Looks nice in there. Very wide spread of light without any optics. In the veg room there's new growth on the littlest clone. As soon as it's root bound it'll get transplanted. New soil mix: half compost, half recycled super soil from the first grow, cooked for ~2-3 weeks. If she likes it I guess I can use it for the third wave of clones that are a few days into rooting (not pictured). It's almost the three weeks mark for the girls in flower, but the next wave is not even close to being ready. I'll bump them over into flower when they are ready, the Chiesel seems to harvest way late anyway.

Still waiting on a Violet pump 1W package from Yuji. I believe Merry will sell it on her eBay store, too, both parties seemed relatively interested. So, if others are interested in a relatively low cost, high CRI, high R9 value, high power White LED, merryday168 could be a really good source for you in the near future. I'd like to build at least two panels so I can have some near-UV from veg until harvest. I don't wanna throw any curves.

Too many good ideas, thanks again!

Bumping, did you ever finish that project using standard Cree bulbs and tearing them down and laying them flat? I'm thinking about doing that.

bondoman said:

Bumping, did you ever finish that project using standard Cree bulbs and tearing them down and laying them flat? I'm thinking about doing that.

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I did, actually. I sorta sprinkled information around the forum about it, I can see where it might have gotten lost. Some's in here, some's in captain's Cree thread, and so on. Here's a post I did about the general construction. Hope this covers what you're looking for. There was another individual who made a panel using the light engines from many Cree bulbs and a large aluminum heat sink. Tbh, I could probably have put two 9.5W modules on that heat sink. Sort of a waste of heat sink, but w/e.

https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-26.html#post9498028

Bumping Spheda said:

I did, actually. I sorta sprinkled information around the forum about it, I can see where it might have gotten lost. Some's in here, some's in captain's Cree thread, and so on. Here's a post I did about the general construction. Hope this covers what you're looking for. There was another individual who made a panel using the light engines from many Cree bulbs and a large aluminum heat sink. Tbh, I could probably have put two 9.5W modules on that heat sink. Sort of a waste of heat sink, but w/e.

https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-26.html#post9498028

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very cool. Yeah I must have missed that one. I plan on putting 4 or 5 of them on each CPU heatsink. The original cree heatsink is 2 ozs, and some heatsinks I aready have are 13.5 and 24oz, so I figure I can put a bunch on each one without additional fan cooling.

I think you're right. I'd say the heat sink that I bought could cool three 9.5W modules if you could somehow fit them on there. On top of that, I'd guess it'd only get noticeably warm.

Before you buy a bunch of Cree bulbs and tear them apart, though, why not buy Cree LED's mounted on stars? I believe I've seen the XM-L2 (normally run at 10W, or approximately equivalent to one Cree A19) selling on eBay for like $7-$8. It might end up being slightly more expensive after purchasing the heat sink and driver, but those diodes might even be more efficient, I'm not sure. You could run like an Area51 spectrum, have a bunch of ~4000-5000K Whites and then run some Philips Rebels, or some other Red to supplement the ~630-640nm range.

So the Bluray player died. I opened it up to try and fix it, but LG made the laser all funky and I can't even access the head. So, long story short, I gutted a free heat sink out of it. I'd say it could handle ~20W.



It's a left-over 30W RGB from the remote phosphor project. It came with the flood light housing. No driver was included. But I had an old charger that's about the right current/voltage to run a single string of LED's, so I chose the Red string. Here it is by itself over the girls in flower. It's about 6W of 630nm judging by output of the wallwart (probably draws about 10W wallwart included?).



Once all the lights are on you can hardly see that the extra Red is even there. Only on the closest plant, and only if you look for it.



I actually have another charger that could run the Blue's. I still have that small, round, 2700k remote phosphor from the first build, too. I could use it to convert the 470nm Blue's to Warm White and just leave the Red's running behind the phosphor. Dunno how they'd react to a common ground, though.

View attachment 2620830


And a step inside the veg tent. The third, smallest clone has been transplanted (recycled super soil+compost). Lots of healthy roots on her so far, should start to get a lot bigger very soon. Some broad leaves on the other two girls. Lots of developing branches from all the topping, too.

Bumping Spheda said:

I think you're right. I'd say the heat sink that I bought could cool three 9.5W modules if you could somehow fit them on there. On top of that, I'd guess it'd only get noticeably warm.

Before you buy a bunch of Cree bulbs and tear them apart, though, why not buy Cree LED's mounted on stars? I believe I've seen the XM-L2 (normally run at 10W, or approximately equivalent to one Cree A19) selling on eBay for like $7-$8. It might end up being slightly more expensive after purchasing the heat sink and driver, but those diodes might even be more efficient, I'm not sure. You could run like an Area51 spectrum, have a bunch of ~4000-5000K Whites and then run some Philips Rebels, or some other Red to supplement the ~630-640nm range.

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You're right. The only reason I'd want to do this is the bulbs are $5 where I live, and already include the drivers, otherwise it wouldn't make much sense. Another reason would be I think I could fit 4 of these cree bulb leds on my 2.5" x 3.0" heatsink, and the stars would probably only fit one on them. I was really impressed with what CM did with these bulbs where 3/4 of the lights weren't even directed at the plants. Also I think they should last a really long time, as they should be running cooler than the regular bulbs. I already have an idea for a small hood to direct any side lighting straight down also. I'm going to start with 4 and a heatsink and see how it turns out while on for 24 hours. I'll let you know how it turns out when complete.

It's gonna be sick. I'll watch.

I have to build a bunch of LED panels of some sort. I very much like the idea of smaller sources of light, but with many more sources. That makes the screw-in "bulbs" attractive. This convenience is gone when we do the mod. Too bad they couldn't be flattened have a little sink added, and still somehow use the lamp socket.

I think the Cree Spot lights do what we want, but haven't seen one with globe removed

Rrog said:

I have to build a bunch of LED panels of some sort. I very much like the idea of smaller sources of light, but with many more sources. That makes the screw-in "bulbs" attractive. This convenience is gone when we do the mod. Too bad they couldn't be flattened have a little sink added, and still somehow use the lamp socket.

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http://www.designingwithleds.com/cree-led-65w-equivalent-br30-flood-light-tear-down-and-review/

They don't point where we want 'em to!

Good to know

Rrog said:

http://www.designingwithleds.com/cree-led-65w-equivalent-br30-flood-light-tear-down-and-review/

They don't point where we want 'em to!

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Rrog said:

http://www.designingwithleds.com/cree-led-65w-equivalent-br30-flood-light-tear-down-and-review/

They don't point where we want 'em to!

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You 've yourself a point,there !

But .....




It looks 'promising' for DIY designs ....

Maybe the day ,that people will take apart some led bulbs ,
slightly bend and straighten the 'fork-shaped ' led bulb mcpcb,
Then Stick/glue/screw 'em over an aluminium heatsink(s) and using the on-board drivers ,
just to make a simple grow-light (phewww,that was long ..),
are not that far ....

Looks doable ...

Has already been done by the OP of the thread! The problem is we lose that cool ability to screw these into lamp sockets.

Would be great if the new sink was able to be attached to the threaded bulb part

stardustsailor said:

You 've yourself a point,there !

But .....

Maybe the day ,that people will take apart some led bulbs ,
slightly bend and straighten the 'fork-shaped ' led bulb mcpcb,
Then Stick/glue/screw 'em over an aluminium heatsink(s) and using the on-board drivers ,
just to make a simple grow-light (phewww,that was long ..),
are not that far ....

Looks doable ...

Click to expand...

https://www.rollitup.org/led-other-lighting/709367-cree-led-bulbs-9w-dissembled.html

https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-23.html#post9449385
https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-26.html#post9498028

Rrog said:

Has already been done by the OP of the thread! The problem is we lose that cool ability to screw these into lamp sockets.

Would be great if the new sink was able to be attached to the threaded bulb part

Click to expand...

Probably could be done. The driver doesn't necessarily have to be taken out of the threaded heat sink base. You do have to solder wires onto the PCB, though. Not sure if I could disassemble the base for soldering and then reassemble fully functional. Not sure how hard it would be to solder two wires into the neck of the base though, either. The hardest part might be attaching the base to the new heat sink, the joint will have to be able to withhold the weight of the heat sink at any angle.

Bumping Spheda said:

https://www.rollitup.org/led-other-lighting/709367-cree-led-bulbs-9w-dissembled.html

https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-23.html#post9449385
https://www.rollitup.org/led-other-lighting/626538-multichip-led-remote-phosphor-guess-26.html#post9498028

Probably could be done. The driver doesn't necessarily have to be taken out of the threaded heat sink base. You do have to solder wires onto the PCB, though. Not sure if I could disassemble the base for soldering and then reassemble fully functional. Not sure how hard it would be to solder two wires into the neck of the base though, either. The hardest part might be attaching the base to the new heat sink, the joint will have to be able to withhold the weight of the heat sink at any angle.

Click to expand...

Now that's what I call ' pretty cool ' ....
Good Job .Great DIY idea ..
Congrats Bumping Spheda !

I'm thinking at this point better to simply use small panels and drivers.

The concept of the smaller-yet-more-numerous fixture I think is a proven concept looking at grows like Captain Morgan. 10W panels seem too small, though. Maybe 20-25? 1 driver per fixture.

EDIT: Maybe even 35- 50W(actual) per panel?