Yeah it's those cheap ones that really need the washers all the nice ones have built in washers I would still use the proper holes just so the screws have more surface area in contact with the board but your just using it as a safety net so you're all good I don't ever use thermal tape
Cree Cobs+Samsung F Series Gen 3s strip build
- Thread starter whytewidow
- Start date
whytewidow
Well-Known Member
Honestly I drive them soft enough I probably dont need thermal tape or paste either. I jus have a big 50 foot roll. So i figured might as well use it.
digikey is also nice, ordered tuesday night, was delivered in germany this morning.
whytewidow
Well-Known Member
Yeah that's pretty quick but I think digikey has an Eu warehouse I believe. Which would explain why you got it so fast. But either way if not thats still pretty quick. I've used digikey a few times. Never had any complaints about them.
Vd22
Well-Known Member
Try mouser, i got my 240 from them shipped only 1 day after arrow. Arrow was like 1 or 2 days i forgot it was so fast
nope, everything comes from kentucky
OLD MOTHER SATIVA
Well-Known Member
"my grandma ,what hairy legs you have"..jk
good thread and photos
good thread and photos
whytewidow
Well-Known Member
Kentucky to Germany, that's fast as hell.
whytewidow
Well-Known Member
It's cold here man. Gotta stay warm somehow lol.
whytewidow
Well-Known Member
Test fired the cxa3050s cobs. 35.07vdc @900mA for 31.56w per cob. That should be sufficient to add to the strip light. The heatsink n fans should be here any time now.
yep, half a day less than amazon prime
whytewidow
Well-Known Member
Using 3/4×3/4 alum angle. My frame is 24inches deep. So I cut 4 pieces. 2 for each cob n heatsink. One on each side facing inward |_ _| like that. But spread apart enough the cob and hang below bottom of the angle. So they will set in like a channel.
Vd22
Well-Known Member
So theyre basically floating like you can slide them freely?
whytewidow
Well-Known Member
Yeah. Or you can drill a couple small holes. And slide the pins on the outside of heatsink go into the angle so they dont slide. But even then you can jus grab them pick them upand slide them.
whytewidow
Well-Known Member
So I got bored. I have two 300 watt bloomspect Ebay led lights. That are super heavy on the blue spectrum. So I've been vegging with them. Well they suck. I wanna build a sammy strip light to veg with. But until then. Use what you got right??? They were free. So why not use em. And it gave me something too do.
I had two of these big ass corncob bulbs. But they were e39 mogul base for hid replacements.
They are both 100watts omw is 5500k and the other is 6500k they are extremely bright but shine in 360° but not now. Should put out some light.
So I ripped them apart. And I'll put em on an aluminum sheet I have laying around. And run them on the drivers that were inside with them. The bigger one has double row of 3 and the smaller one had single strips double row. 56 diodes on the small ones. 12 strips of 56 diodes in 5500k. And 252 diodes per strip on the bigger ones. Which is 1512 diodes per strip. With 6 strips of 6500k.
There was like a puck of leds on each end I decided not to use them.
Total diode count
(672) 5500k diodes
(9052) 6500k diodes. Total: 9,744 diodes
Spread over 200watts in a 19"×8" area.
Not sure which layout probably the second pic.
I had two of these big ass corncob bulbs. But they were e39 mogul base for hid replacements.
They are both 100watts omw is 5500k and the other is 6500k they are extremely bright but shine in 360° but not now. Should put out some light.
So I ripped them apart. And I'll put em on an aluminum sheet I have laying around. And run them on the drivers that were inside with them. The bigger one has double row of 3 and the smaller one had single strips double row. 56 diodes on the small ones. 12 strips of 56 diodes in 5500k. And 252 diodes per strip on the bigger ones. Which is 1512 diodes per strip. With 6 strips of 6500k.
There was like a puck of leds on each end I decided not to use them.
Total diode count
(672) 5500k diodes
(9052) 6500k diodes. Total: 9,744 diodes
Spread over 200watts in a 19"×8" area.
Not sure which layout probably the second pic.
whytewidow
Well-Known Member
So the light above ^^^^ will be used for only a few days for veg I'm gonna B-Lux 5k gen 2s trying to decide if I wanna use 10 (2) footers or 20 (1) footers. Any have any opinions with using 1 or 2 footers? Be veg only light.
whytewidow
Well-Known Member
Well got 2 outta 3 drivers wired up. Got the cobs drilled, tapped, and mounted. Gotta wire up the driver for the cobs.
These are turned clear down.
These are turned clear down.
whytewidow
Well-Known Member
Cobs mounted and they slide from one side to the other. If need be, one on each side. Running at 31.5w @900mA. Debating on mounting 2 more. 2 on each side.
