MedicinalMyA$$
Well-Known Member
Got cheap parts from Arrow a couple years back
12 X 3000K Samsung SL-B8V7N90L1WW $2.76 each
Delta Electronics LNE 48V-120WAA $12
Made these into a light for a small (low) 2x2. The strips are 22" long so the light is a pretty snug fit in the tent.
Used 1" wood planter stakes as a frame. Heatsinks aren't necessary as each strip only gets around 200mA (rated for 1380mA max) and run lukewarm.
12 Strips in parallel, wiring concealed in 1" plastic conduit/trunking.
Powered by a $12, 120W Delta brand driver.
Made a 2x2 testing enclosure and took some measurements using this Lux meter from Amazon...
...and this Lux to PAR conversion chart courtesy of Migro
This is the relative size of the fixture in the 2x2 measurement enclosure
These are the PAR measurements at 3 different heights
These numbers seem pretty good but taking into account the strips forming basically 2 large white quantum boards, and the white floor, there will be extra light that reflects off the floor then back off the strips themselves.
There is room enough for another 2 strips but even though a 2 ft sq quantum board style light appeals to me there needed to be room for air to move, and it would just make a bigger hotspot in the middle.
Tried 150W but it was too strong, reaching 1500 PAR in the center at about 15"
Total cost, about $50.
12 X 3000K Samsung SL-B8V7N90L1WW $2.76 each
Delta Electronics LNE 48V-120WAA $12
Made these into a light for a small (low) 2x2. The strips are 22" long so the light is a pretty snug fit in the tent.
Used 1" wood planter stakes as a frame. Heatsinks aren't necessary as each strip only gets around 200mA (rated for 1380mA max) and run lukewarm.
12 Strips in parallel, wiring concealed in 1" plastic conduit/trunking.
Powered by a $12, 120W Delta brand driver.
Made a 2x2 testing enclosure and took some measurements using this Lux meter from Amazon...
...and this Lux to PAR conversion chart courtesy of Migro
This is the relative size of the fixture in the 2x2 measurement enclosure
These are the PAR measurements at 3 different heights
These numbers seem pretty good but taking into account the strips forming basically 2 large white quantum boards, and the white floor, there will be extra light that reflects off the floor then back off the strips themselves.
There is room enough for another 2 strips but even though a 2 ft sq quantum board style light appeals to me there needed to be room for air to move, and it would just make a bigger hotspot in the middle.
Tried 150W but it was too strong, reaching 1500 PAR in the center at about 15"
Total cost, about $50.
can you make a step by step guide on how to build this? sorry man i would really appreciate it if you could 
thru 6 qbs worth of diodes. Also very even coverage.
