Another Cree CXA3070 DIY Thread

happy75

happy75

Well-Known Member
alesh said:
It's a wayyy better offer. Typical efficiency is 28% @9.6W @25°C. Still pretty expensive.
Click to expand...
Still expensive, but easy to build yourselves. How did you calculate 28%, they state 36% in the datasheet.

-edit: ooops..36% is the Osram. 28% is the LZR from Ledengin.
 
Last edited:
happy75

happy75

Well-Known Member
The reason behind some calculatioins is often not my strongest point....but I will remember it. Thanks for explaining it to me.

Edited my former post: the 36% is the Osram I was referring to, you were referring to the ledengin.
 
Doer

Doer

Well-Known Member
stardustsailor said:
We should make a club " The CXA DIYers aka Blamers of SupraSPL ....
LOL!

:mrgreen:

Nice work Supra ,with the heatsinks ....
I trust much in 'heatsink pro-preparation' ,myself also ...
I go up to 2500 ( Maybe the EU 2500 is the US 1000 ? I think something like that ..
'Cause with EU 80 grit...
You can cut down a tree ,not just sand aluminium !!!-In a matter of speaking ....
I think US 80 is something like ~200 EU grit ...)
Click to expand...
I blame you for being so Top DIY. inspiring!
I blame @churchhaze for being so right all the time
I blame @SupraSPL for bringing it and laying it out
I must mention blame for @bicit, for showing me that all of you, are not jerks
And I give a special blame to @medicinehuman for showing me I am sometimes. (drat!!)
And BIG blame goes to @alesh for keeping me real
I want to blame all my fans on RIU for not Ignoring me completely, and immediately
Of course, mainly I Blame my Mom, for making all this possible

Thank you, thank you, thank you all. And please catch my next build, soon to be a major motion picture (if I ever finish this one...) Good Night! And may GAWD bless!
 
captainmorgan

captainmorgan

Well-Known Member
Your math is way off on the coverage,it takes a small fraction of a watt to cover a sq/ft with 730 nm, 16'x16'= over 28 sq yards. A little goes a long way,my DIY ones are 6 watts and will cover a 5x5 tent easily. And efficiency isn't really a issue since you use it for 5 to 10 minutes once a day,others have reported excessive stretch if used during lights on,I just use it for the phytochrome switch.
 
happy75

happy75

Well-Known Member
captainmorgan said:
Your math is way off on the coverage,it takes a small fraction of a watt to cover a sq/ft with 730 nm, 16'x16'= over 28 sq yards. A little goes a long way,my DIY ones are 6 watts and will cover a 5x5 tent easily. And efficiency isn't really a issue since you use it for 5 to 10 minutes once a day,others have reported excessive stretch if used during lights on,I just use it for the phytochrome switch.
Click to expand...
WTF I see it now...Misinterpreted the ' and the "... inch/foot.. well that clarifies it...
 
uzerneims

uzerneims

Well-Known Member
happy75 said:
WTF I see it now...Misinterpreted the ' and the "... inch/foot.. well that clarifies it...
Click to expand...
Ooh... I tought ' is the "foot" and " is the "inch"...
So 6w 730nm for 150cm x 150 cm tent...

RIU should come up with some vBulletin script, that offers you switch - from imperial/metric, haha...

So, i will buy that cheap chinese e-bay 730nm, and see how it works out...
 
bicit

bicit

Well-Known Member
Doer said:
I blame you for being so Top DIY. inspiring!
I blame @churchhaze for being so right all the time
I blame @SupraSPL for bringing it and laying it out
I must mention blame for @bicit, for showing me that all of you, are not jerks
And I give a special blame to @medicinehuman for showing me I am sometimes. (drat!!)
And BIG blame goes to @alesh for keeping me real
I want to blame all my fans on RIU for not Ignoring me completely, and immediately
Of course, mainly I Blame my Mom, for making all this possible

Thank you, thank you, thank you all. And please catch my next build, soon to be a major motion picture (if I ever finish this one...) Good Night! And may GAWD bless!
Click to expand...
I am a jerk. I just don't always verbalize it :P

Thanks for the discount code. Got my holder for the next few builds on the cheap.

Now if only lenses were more available.
 
Last edited:
captainmorgan

captainmorgan

Well-Known Member
Mohican said:
Look at all of that flower! Extraordinary Cap'n!

How does it smell?
Click to expand...
Sad thing is I have a lousy nose and I'm around her so much it's tough for me to really appreciate her. I'm hoping to get my hands on a GG#5 clone in the near future,#5 is going to be tightly held and not freely passed as the #4 was. There will be a chance for people to get some dynamite genetics at C2 in June here in Michigan.
 
Tim Fox

Tim Fox

Well-Known Member
captainmorgan said:
Sad thing is I have a lousy nose and I'm around her so much it's tough for me to really appreciate her. I'm hoping to get my hands on a GG#5 clone in the near future,#5 is going to be tightly held and not freely passed as the #4 was. There will be a chance for people to get some dynamite genetics at C2 in June here in Michigan.
Click to expand...
how many cobs are you under on this grow Capitan
 
You must log in or register to reply here.
Top