Recent content by sixixix

I ordered four of the UV-boards recently, hoping they will arrive over the weekend. Can't wait to test them out!

Yes he is, at least on instagram.

I measured with the IR thermometer, 38C / 100.4f. This is while running them at 70W. Dosidos #9 F2 x Aunt of Farouk, 4 weeks in.

I think they are running at around 40 Celcius with some airflow over the topside. I haven't checked in a while, and I have a terrible memory, but it wasn't bad. I'll check again and let you know.

I've got a few of the same R2T boards that you have bought, Moflow. Running 4 of them @ 90W-ish each, together with 8 CXB3590's @ 28W each. The heatsinks weren't ready when I ordered my boards, so I had to improvise. They are mounted on 5mm alu plates, with u-profile alu bars on the top for...

The backside of C looks like some of the pictures of Epistar 5630-series I've seen.

Thanks for your feedback. It's 16S32P. Not all the diodes are Samsung, only the 3000K ones.

I don't understand either. I tried communicating with the seller about this, but I feel that he didn't fully understand what I was trying to say, or maybe it was the other way around. I should probably give it another shot. Yeah, that is not the problem :)

I don't really see why you would throw out those citizens, they are still pretty good, especially when running them as soft as you are. I seem to remember that they are more efficient at 1.05A than the 3590's are at 1.8A, but I might be wrong :) Also, running that 3590 at 1.8A might be a...

I received my R2T panels yesterday, and wanted to hear what you think. The forward voltage is stated in the ad as 53V at 4.7A. I know the Vf will drop at lower amperage, but how much? I connected 4 boards in series to a HLG 480H C2100B, which gave me a measured voltage of 171V over 4 boards...

I just ordered nylon bolts and nuts for mine, one can never be to careful. Thanks for the heads up.

I'm thinking about redesigning my flower fixture, dimming my 8 x 3590's down from 1.4A to 0.7A and installing 4 of these boards. R2T said they could be run up to 70W without cooling, but I'll probably use an alu slate for additional cooling and run them closer to 100W each. The upgrade itch...

Any opinions on these, with the added 730, 660, 460 and 365nm diodes? https://www.alibaba.com/product-detail/DIY-240w-LED-grow-lights-Samsung_60730773356.html

The black spot people use as a reference when comparing chips seems to be more visible on the Fotop-board, doesn't it?

Awesome fixture!