Lighting No money, no common sense, no problem

One has the circuitry on the chip so it is 50 Watts per spec. The other is rated at 50 watts and running off a cheap 50 watt driver from China. I really gotta get a Killawatt to start testing at the wall. I will say the level of brightness is really noticable when I shut them down. Almost like night and day.
 
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Success!

well, kind of. I blew one cob because if my stupidity. Leave it at that. Everyone else is running and that gives me 250 watts cobb in theory. I know when you look at this mighty light you must ask yourself "self, what can I do to try to top that monstrosity?" Well, your out of luck. I am switching my fert program over now to Brawndo. It's got what plants crave. Its got ELECTROLYTES!!!

Puddentane
 
Little polarity issue?

Gotta say man for a budget build you sure have allot of light in that tent. Once things settle a bit I really want to try these out.
 
Hey smO,

Nah, knocked the wire off the contact pad due to a soft joint. It was spring loaded of course and went shooting across the chip onto the hot. Nice little shot of adrenalin on that one. Followed by some good old USMC style cursing. Turns out that my welding skills really are, well, welding skills...
 
Yeah we need to figure a better way to attach those "no holder needed" cobs.. soldering the cables to the cobs is not ideal imo (I assume that's why it came loose?)
 
Yeah we need to figure a better way to attach those "no holder needed" cobs.. soldering the cables to the cobs is not ideal imo (I assume that's why it came loose?)

Correct.

And the tension on the wire caused it to skate across the front of the chip.

I think if I was attaching the chips with screws rather than Arctic Silver adhesive I would look into grinding down a washer into a tear drop and put a pad between the point of the washer and the contact pad and then just torq down the screw to compress the wiring. Not sure, gotta think about it because this will be all I can afford for this winter.

I will have to look into a new drill bit and tap to match a screw profile that is easily available. Besides, the Adhesive is a bitch to work with when you have to replace. Got to vise the sink and hammer it off with a chisel. then resurface as needed. Not the most fun for a lazy guy.
 


you could pressure fit a lense with some alu pieces from the heatsink side, long bolt and nut to tighten it. For the oldschool heatsinks you could use a 2x10cm piece and simply twist it 90° on both sides then drill holes in the ends to nut through :p
 
That is one bad ass flashlight. I don't like some of the things in his assembly but you cannot argue with success. Since the chips I am playing have the circuitry on board they have a wierd shape and would need to be specialized. Alot of electronics to clear on the surface of the chip. But it is doable and when I get a couple more I will definitely see what I can come up with.

Got lots of heat sinks sitting around here. I see three laying on my desk as I type this. Computer nerd is a long forgotten hobby. But the parts are everywhere.

Now I want a stronger flashlight. I got plenty of those around too but not one of THOSE. Nothing like blinding the neighbors in the middle of the night.
 
Well, this is the results of a bad solder joint. Those pads are pretty delicate and I screwed the pooch on this one. Now I gotta get this cleaned up and I will mount the 1212 I bought on this heat sink for testing. The good news is that it only cost me $2 and I will get a couple more of these on order next week to round out my other cabinet. @pop22 tells me these are only going to be good for Veg but that is fine. I will move them all on to the box and start running two cycles and use the tent for the new cobs. Should half my production, thus doubling my output.

Now I gotta go scrape some epoxy off a heat sink.

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