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?
Atreum Lighting QB's.
- Thread starter Lucky Luke
- Start date
Big Perm
Well-Known Member
Holy shit joe, that's going to kill it in there.
socaljoe
Well-Known Member
I sure hope so.
Just got this 288 v2 kit. Heatsink, board, driver, cord all from atreum.
Looks to be up to snuff. Only comment I’ll make is that the heatsink fins are quite small compared to my hlg 260 kit. Just wired it up this morning so can’t say yet how that’ll perform. Last pic is the hlg sink.
Looks to be up to snuff. Only comment I’ll make is that the heatsink fins are quite small compared to my hlg 260 kit. Just wired it up this morning so can’t say yet how that’ll perform. Last pic is the hlg sink.
Thegermling
Well-Known Member
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
socaljoe
Well-Known Member
That's pretty close. I think I went 20x20 so it would fit inside a 2x2 tent.
Thegermling
Well-Known Member
What screws did you use?
socaljoe
Well-Known Member
8-32 x1" with corresponding nuts. 3/16" drill bit for the screws.
slow drawl
Well-Known Member
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.
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.
Thegermling
Well-Known Member
Is that temp too hot for leds? Im about to wire my boards up.
slow drawl
Well-Known Member
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.
Thegermling
Well-Known Member
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.
socaljoe
Well-Known Member
Here's a link to the diode via Samsung. On the page you'll find specific data sheets.
https://www.samsung.com/led/lighting/mid-power-leds/3030-leds/lm301b/
Here's a screenshot that shows absolute maximums, you'll find that that temperature is well within safe operating range (for diode life).
Randomblame
Well-Known Member
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).
But remember, 10°C less case temps means ~2-3% better efficiency already so the lower you can keep the heatsink temps the better. Binned at 25°C means 100% light output at 25°C. At 85°C you already loose 12-14% outpiut and get only 86-88% of the 25°C output.
I'm using 20pcs low driven 2ft single row F-strips at 450mA currently(9,9w net) and the 1x 1" alu c-channel heatsinks stabilize at 5-6°C over ambient. Means with 28°C ambient I get case temps of only ~33-34°C.
This is why I prefer strips!
Not only the light is distributed more evenly the heat is also spread out much better and therefor strips are much more efficient when it comes to plant lighting.
Airwalker16
Well-Known Member
So these atreum 288.2's are having no problem pushing 120w per board with a heatsink huh?
SwiSHa85
Well-Known Member
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 price
slow drawl
Well-Known Member
I cranked 2 of them to 140 watts per for 2 hours and got 138 degrees at the heat sinks, and was told is well within reason. I'm gonna fire them up after the first of the year....get things rollin again.
Hard to believe how F'n bright they are.
Hard to believe how F'n bright they are.
HydroFood
Active Member
Iv got an Atreum 144.2 running but current draw seems high. Their website says nominal is 36v pulling 1.7A but I’m getting readings of 33.9v pulling 1.75A.
When I increase to 35v the board almost pulls 3A. I didn’t want to push it to 36v fearing it would damage.
Does any of this sound right?
When I increase to 35v the board almost pulls 3A. I didn’t want to push it to 36v fearing it would damage.
Does any of this sound right?
PSUAGRO.
Well-Known Member
yes it sounds about right for a china board==lottery
.......that's a resistance issue(amp draw)=could be many QC "thingies" at the factory..........check all connections, loose more resistance than tight, usual shit
confirm it runs hotter(temp) than the other boards and return for refund
.......that's a resistance issue(amp draw)=could be many QC "thingies" at the factory..........check all connections, loose more resistance than tight, usual shitconfirm it runs hotter(temp) than the other boards and return for refund
Last edited: