DIY design build throwdown

SSGrower

Well-Known Member
OK so throwdown is a bit strong, but I want to make a creative competition for the best looking and best integrated DIY light builds. The one thing I have noticed is that although there are lots of great minds and ideas (although some may differ from the way I or you would do things) at work in this world of DIY lighting and such but your stuff looks like CRAP for the large part. I want to see what you have, provide a forum for people to receive practical application feedback on their builds in progress, and mostly I want to push the DIY crew to think beyond individual projects and integrate the system. Those using Arduinos and whatnot will have an advantage on me, but I see getting one real soon.

Innovate, think how does this design improve my situation, make it look good. Ask yourself, Would I hang this in my living room? If YOUR answer is yes then I want to see it even if its just because that's where your garden is.

First off the objective is to make something functional look cool.

Guideline 1 - To be an entry it must work and function to the needs of the USER. It dosen't matter if it is finikey and needs constant attention and adjustment but it must serve a purpose and work. DIY projects outside lighting are welcome (not sure where the post will go but I'll leave it to the administrators to decide)

Guideline 2 - Purchased lighting may be used in the form of unmodified supplemental light to support overall garden health, however the DIY light should be the centerpiece(s). Purchased lighting that has been operationally modified by the end user (not the end user's friend of coworker....)


I will be posting pictures of my progress soon but to wet your appetite think about fans that automatically come on for LED cooling only when needed. Why? cause although functional multiple fans running all the time or heatsinks with the thermal capacity don't fit the objectives - budget, function, and aesthetics.
 

PurpleBuz

Well-Known Member
I will be posting pictures of my progress soon but to wet your appetite think about fans that automatically come on for LED cooling only when needed. Why? cause although functional multiple fans running all the time or heatsinks with the thermal capacity don't fit the objectives - budget, function, and aesthetics.
waste of time (auto fan rpm control).

- heat load of an led is well known and cooling requirements are easily quantifiable. Just do the engineering first.
- the cooler an led runs the more efficiently it runs, so a wee bit of extra fan power is not wasted.
- cooling wattage for a well designed system is trivial compared to the light output.
e.g. To cool a 200 watt unit I only use 1 12v power supply for two fans drawing a couple of watts.
 

Abiqua

Well-Known Member
Built a passive fixture...as if the circuitry for modulating fan speed doesn't have more of a chance of failure than proper design.

Aesthetics are for owners of light companies.

Building light engines that grow the best medicine [Not because they look nice]. Where is that category?
 

SSGrower

Well-Known Member
waste of time (auto fan rpm control).

- heat load of an led is well known and cooling requirements are easily quantifiable. Just do the engineering first.
- the cooler an led runs the more efficiently it runs, so a wee bit of extra fan power is not wasted.
- cooling wattage for a well designed system is trivial compared to the light output.
e.g. To cool a 200 watt unit I only use 1 12v power supply for two fans drawing a couple of watts.
All are coorect but what changes is the environment which the light is used wich affects the heat transfer so the ability to respond in real time would be a benifit imo.

Very good points I agree with you

12v digital thermostat 15 bucks, might as well use the info I gather by monitoring the Temps during my first build. Otherwise it's just a total waste and not just a waste of time?
 
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SSGrower

Well-Known Member
Okay okay, but exposed connectors dangling everywhere. Not asking it to be a full time project just say dedicated 1% to it. As stated above why worry about such little waste? Dunno but I have fun with it.
 

SSGrower

Well-Known Member
Built a passive fixture...as if the circuitry for modulating fan speed doesn't have more of a chance of failure than proper design.

Aesthetics are for owners of light companies.

Building light engines that grow the best medicine [Not because they look nice]. Where is that category?
Perhaps to clarify the creation must WORK. as promised pics to shareproof of functionality.JPG
The Ugly Mess:
The kind of ugly mess I speak of.JPG

The front was first, then taking just a little time while testing it built the 2nd one in back (thought it was pretty easy to put together and offered a modular form), the pretty white case I purchased from Shenzhen energy efficiency was next with a lamp change and there you have it a group of LEDs that puts out good lite in a quantity similar to a 400 -600 light based on conventional technology. And for about half the dollar cost. The whole thing is a waste of time though, I question shouldn't we all waste a little time?
 

SSGrower

Well-Known Member
So here's the digital thermostat for 12v fan control, going to use thermal epoxy to fix it to the bottom of the hole there in the heatsink which is pretty close to directly above the LED, this should read within 5 deg of what the actual led temp is. Still have to figure a mount/box for the readout. The aluminum flatstock is a bit of a wildcard as I haven't done and sort of technical evaluation if it will even work but I want it to be passive cooling for 2 leds that run off the white box power supplies.pieces and parts.JPG
 

Airwalker16

Well-Known Member
That's nice, so the red leds, for sure that's far red right? Jk. Clean wiring, weight balanced, nearly profesional looking with the lenses.

So over an amp per cob? Or are they 72v? In your opinion are you overdriving, underdriving, or are you in the "goldielochs zone"?
Those are leds on the fans I bought. And I think people who run them anything below 1400 MA are either rich enough to spend the cash on more cobs or are just efficiency addicted. Mine are run on 2 hlg 240-1750''s and the reflector bars are cxb3070''s at 2100ma. People say overdriven, I say more lumens.
 
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