New style Samsung LM561C Board

karlsefni said:
Thank you very much for the heads up. I am actually in Canada and just looking for models which are 1 foot with a decent spectrum currently in stock. Any recommendations would be greatly appreciated. Cheers!
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Bridgelux EB strips are avaible with 1ft length.
 
karlsefni said:
Ahh yes; it has been very difficult trying to obtain some of the 3rd Generation F Series over my way. I am using a 2x2x4 so I am feeling a little bit skeptical about anything over 500mm but I am also open to suggestions seeing as this would be my first project.
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Just read this... just go with 2ft. And I would prefer Bridgelux EB strips (gen2) over F-series, but that‘s my personal opinion.
 
btw im running 2 x QB-304's off the one driver, so is the B100K potentiometer still the right one for that or do i need B200K or...?
 
PhenoMenal said:
btw im running 2 x QB-304's off the one driver, so is the B100K potentiometer still the right one for that or do i need B200K or...?
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Potentiometer depend on number of driver, not on number of cob or board. So 1 driver needs a 100k pot, 2 driver dimmed from same pot needs a 50k pot, 3 driver from same pot needs a 33k pot and so on
Divide 100 by the number of driver and you will find right pot
 
PhenoMenal said:
just to clarify (my wattage meter hasnt arrived yet) is that for 1 x QB-288 ? (288 x 0.5w = 144w, add ~10w for driver overhead so im assuming thats about right)
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Yep, that's 1x "QB-288". I was surprised by how well it dissipates heat with no heatsink... well I suppose the driver housing is sort of acting as a heatsink. Still can't believe how bright these boards are.
 
Ok, finally got a chance to take PAR measurements. These were measured in an open area (i.e. no reflectors). Killawatt meter shows 150W at the wall. Units are umols/m2/s, in case it isn't obvious.

Does anyone have a PAR map for a single HLG QB288? I looked around but haven't been able to find one. Would be interested to see how this board compares.
 

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estooki said:
Ok, finally got a chance to take PAR measurements. These were measured in an open area (i.e. no reflectors). Killawatt meter shows 150W at the wall. Units are umols/m2/s, in case it isn't obvious.

Does anyone have a PAR map for a single HLG QB288? I looked around but haven't been able to find one. Would be interested to see how this board compares.
Click to expand...
135w kit should be a 288pcs board
 
estooki said:
Ok, finally got a chance to take PAR measurements. These were measured in an open area (i.e. no reflectors). Killawatt meter shows 150W at the wall. Units are umols/m2/s, in case it isn't obvious.

Does anyone have a PAR map for a single HLG QB288? I looked around but haven't been able to find one. Would be interested to see how this board compares.
Click to expand...
Here's a par map of Growgreen Board 384 diodes at 151 watts in open space to compare.
20171217_131722.jpg
Here's Quantum Boards par maps. 2 x boards.
downloadfile-19.png

.Unfortunately I can't find the single qb par map at moment but hope this helps
 
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