patrikantonius
Active Member
Hi guys. You may have noticed that I did a lot of research on LEDs in the past few weeks. Thanks to you guys, they have been very rewarding and I think I can finally build my own light.
I wanted something for a small space (0.25-0.4 m²), short, ideally for a SCROG. Obviously with the best performance per watt while keeping a reasonable price.
Here are the "ingredients"
The LEDs come from radiospares, heatsinks and drivers from China on ebay, PCBs from a local reseller. Total around 170 inc tax & shipping.
Total power (theoretical): 84.8W
34*2.45*0.680 = 56.6W (reds)
12*3.45*0.680 = 28.2W (whites/blues)
Why all Osrams? Its a purely personal choice. I had the opportunity to take all those LEDs from the same supplier so it was more convenient. I'd have got XP-E reds (in 625nm) and XP-G2 whites, along with the Osrams 660s if I was really seeking the best of the best.
LEDs will be mounted on star MCPCBs and glued to the heatsinks with thermal compound & epoxy. I will certainly use 120mm fans at max power but I'm not decided yet. In the beginning, I will wire both panels in parallel to one driver; passive cooling will be okay I guess.
One panel (of the two)
LEDs location
I have already received most parts, I'm still waiting for the PCBs to arrive but it should only take a couple of days. I will keep you updated.
See ya!
I wanted something for a small space (0.25-0.4 m²), short, ideally for a SCROG. Obviously with the best performance per watt while keeping a reasonable price.
Here are the "ingredients"
46 | LEDs |
24 | Osram Oslon SSL deep red (660nm), 80° |
10 | Osram Oslon SSL red (625nm), 80° |
8 | Osram Oslon SSL deep blue (450nm), 80° |
4 | Osram Oslon Square neutral white (4000k), 120° |
2 | Drivers 36-75v/0.68A (50W max) |
2 | Heatsinks 140*300*20(mm), 0.32m² surface each |
The LEDs come from radiospares, heatsinks and drivers from China on ebay, PCBs from a local reseller. Total around 170 inc tax & shipping.
Total power (theoretical): 84.8W
34*2.45*0.680 = 56.6W (reds)
12*3.45*0.680 = 28.2W (whites/blues)
Why all Osrams? Its a purely personal choice. I had the opportunity to take all those LEDs from the same supplier so it was more convenient. I'd have got XP-E reds (in 625nm) and XP-G2 whites, along with the Osrams 660s if I was really seeking the best of the best.
LEDs will be mounted on star MCPCBs and glued to the heatsinks with thermal compound & epoxy. I will certainly use 120mm fans at max power but I'm not decided yet. In the beginning, I will wire both panels in parallel to one driver; passive cooling will be okay I guess.
One panel (of the two)
LEDs location
I have already received most parts, I'm still waiting for the PCBs to arrive but it should only take a couple of days. I will keep you updated.
See ya!