Lucky Luke
Well-Known Member
That doesn't mean others don't get them as well. Samsung do make them to sell them. Unless you have proof of exclusive rights?I thought HLG already gets Samsung highest bin.
That doesn't mean others don't get them as well. Samsung do make them to sell them. Unless you have proof of exclusive rights?I thought HLG already gets Samsung highest bin.
Holy shit joe, that's going to kill it in there.I'm just dipping my toes into indoor growing, so I'm starting small with a 2x2x4 tent. I built the light frame to fit that dimension, but wanted enough light to be able to cover a 4x4 and then only have to rebuild the frame, if that makes sense. I don't imagine I'll be cranking the pot all the way in a 2x2.
I sure hope so.Holy shit joe, that's going to kill it in there.
I just got my 4 boards. What are the dimensions of the aluminum angle you went with? HLG's 550 is 26 x 20. Should I just go by that?Hey guys.
I built a 4 panel rig using these boards. So far I've only tested it to make sure it functions. Glad to see I didn't buy some junk QBs.
Here's my finished setup. The power cord in pic #2 was for testing purposes, I've replaced it with a nicer cord and waterproof connector.
View attachment 4231064 View attachment 4231065
That's pretty close. I think I went 20x20 so it would fit inside a 2x2 tent.I just got my 4 boards. What are the dimensions of the aluminum angle you went with? HLG's 550 is 26 x 20. Should I just go by that?
What screws did you use?That's pretty close. I think I went 20x20 so it would fit inside a 2x2 tent.
8-32 x1" with corresponding nuts. 3/16" drill bit for the screws.What screws did you use?
Is that temp too hot for leds? Im about to wire my boards up.Thought I'd chime in on my purchase. I've got 2 of the 288.2 LM301 boards and sinks with an HLG 240H 54a on a temporary aluminum angle frame. Wired them parallel and ran them for a couple hours as they came (didn't mess with the pots), seemed crazy bright for 120 watt boards. They felt a little to warm to me so I threw a meter on em an plugged into a killawatt and took some readings with a temp gun.
After a 2 hour run...
50.3 volt
280 watts
138f "heat sink temp"
No wonder they were so F'n bright, cranked them down to 100 watts a board and the temp seemed to hover around 125f. Had them in an empty 2x4 with 65f ambient temp,18" below boards 72.4f, 18" above 74.6f.
Hoping these will do fine for a month of veg then I'll toss em with my 400 blackdog and crank them down a bit to fill the ends of the tent. I'm bound and determined to get a lb outta there.
I'm kinda new to this game so I'm not sure about proper temps. I was more concerned and surprised to see the driver would crank out 280 watts and push the 120 boards that hard. The pots were adjusted full on from the supplier so I think they need to be monitored initially to get where you want them.Is that temp too hot for leds? Im about to wire my boards up.
Im pretty new to DIY led as well. This 4 board light is my first DIY light. I went with a constant current driver, the HLG-480h-C2100A. This driver can really crank out around 2400ma. Atreum told me their 288.2 boards can really handle a max of 2800ma. So 4 hooked up to this driver should be fine. Maybe @Randomblame can tell us if 138f or 160f temperature is bad for these heatsinks since I have no idea. I might look into this while he cares to chime in.I'm kinda new to this game so I'm not sure about proper temps. I was more concerned and surprised to see the driver would crank out 280 watts and push the 120 boards that hard. The pots were adjusted full on from the supplier so I think they need to be monitored initially to get where you want them.
Here's a link to the diode via Samsung. On the page you'll find specific data sheets.Is that temp too hot for leds? Im about to wire my boards up.
An HLG-480H-C2100 should have 229vF so it fits well with 4 Atreum boards. 59°(138°F) and also 71°C(160°F) case temps would both be okay and within the maximum ratings(up to 95°C@200mA per diode).Im pretty new to DIY led as well. This 4 board light is my first DIY light. I went with a constant current driver, the HLG-480h-C2100A. This driver can really crank out around 2400ma. Atreum told me their 288.2 boards can really handle a max of 2800ma. So 4 hooked up to this driver should be fine. Maybe @Randomblame can tell us if 138f or 160f temperature is bad for these heatsinks since I have no idea. I might look into this while he cares to chime in.
I now own 5 of these boards and have absolutely no cooling issues pushing over 120w per board passive. Great board/heatsink combo for the priceSo these atreum 288.2's are having no problem pushing 120w per board with a heatsink huh?