Search found 98 matches

by DaveJonesFan
Tue Jul 24, 2018 11:25 pm
Forum: Strips
Topic: Opinions on thermal tape
Replies: 8
Views: 1912

Re: Opinions on thermal tape

https://www.amazon.com/Aikenuo-Adhesive ... B075FRPXQ5

I used this stuff. Not quite as wide as the EB Gen 2 strips I used it with, but you'll have to consider your own application since you left it kind of vague.
by DaveJonesFan
Tue Jul 24, 2018 11:32 am
Forum: Grows
Topic: I mean, come on
Replies: 33
Views: 7202

Re: I mean, come on

I dug up an example of the genotype from my first picture, at day 46 under 24 cri HPS bulbs for development comparison.
HPS_46.jpg
by DaveJonesFan
Tue Jul 24, 2018 11:26 am
Forum: Grows
Topic: I mean, come on
Replies: 33
Views: 7202

Re: I mean, come on

It's all 80 cri.
by DaveJonesFan
Tue Jul 24, 2018 10:49 am
Forum: Grows
Topic: I mean, come on
Replies: 33
Views: 7202

I mean, come on

Keep trying to stake these up but they are just finding ways to fall back over big time. Lots of density and an almost finished look in mid 40's days of flower. LED's can turn everything into faster finishers. The last pic, that genotype usually likes 68 days under HPS but not anymore, it's a whole ...
by DaveJonesFan
Tue Jul 24, 2018 10:06 am
Forum: Grows
Topic: Weird leaf curl
Replies: 3
Views: 600

Re: Weird leaf curl

The leaf curl looks like it might be from a bit excess nitrogen. The very high light levels start to mess with transpiration rates and exacerbate any over feeding. Just my quick take. I think you're on top of it.
by DaveJonesFan
Tue Jul 24, 2018 7:23 am
Forum: COBs & Other LEDs
Topic: Help a beginner! Mix cobs in a circuit?
Replies: 8
Views: 1252

Re: Help a beginner! Mix cobs in a circuit?

Hey. Didn't even notice on the English. You're doing well there, enough to have a nice technical discussion. Thanks for that. The 3500K is the temp of COB I run, in the 70v type Vero 29 in my application. Good choice there. It's the spectrum most of the made-for-market light fixtures have used histo...
by DaveJonesFan
Mon Jul 23, 2018 2:09 pm
Forum: Boards
Topic: LM301B board that we've been working on
Replies: 86
Views: 31157

Re: LM301B board that we've been working on

Yeah they have a great price on these, getting the heatsinks included for same price as HLG is a great marketing position.

Here's a little layout of my Atreum board next to the HLG model.
Atreum_288_LM301B_SK.jpg
288_comparo1.jpg
288_comparo2.jpg
by DaveJonesFan
Mon Jul 23, 2018 1:21 pm
Forum: COBs & Other LEDs
Topic: Help a beginner! Mix cobs in a circuit?
Replies: 8
Views: 1252

Re: Help a beginner! Mix cobs in a circuit?

I think I found the heatsink data. Looks to be inadequate, unfortunately.

https://datasheet.octopart.com/NX301103 ... 997282.pdf
by DaveJonesFan
Mon Jul 23, 2018 1:15 pm
Forum: COBs & Other LEDs
Topic: Help a beginner! Mix cobs in a circuit?
Replies: 8
Views: 1252

Re: Help a beginner! Mix cobs in a circuit?

Hey. No problem throwing that 36v COB onto the series circuit with the 2 50v COBs with that driver. The only thing is the 36v COB will be only maxing out near 65 watts so will be running lower power than the others. If it's for a flower light then the 3000K lights sound spot on. You could get anothe...
by DaveJonesFan
Sat Jul 21, 2018 6:06 pm
Forum: Boards
Topic: Quantum Build opinions
Replies: 11
Views: 1405

Re: Quantum Build opinions

Is that how that is? I don't know exactly how that works, but I think my understanding was a bit different on the pots. I thought it was the 0-100% 1:1 with 0-100k ohm pots on the driver, however some of the common inexpensive pots with the higher tolerances of up to 10% (even on some data sheets I ...