PSUAGRO.
Well-Known Member
great job........+ rep..........yeah all "white" strains/crosses seem to stink it up
going away from hempy this round???
Cree CXA3050 100W Custom LED Grow Journal with Dinafem Blue Widow
- Thread starter bbspills
- Start date
going away from hempy this round???
Thanks. I am still sticking with Hempy. I can't discount the results I get with it as well as the simplicity.
Yep, and add a 4 hr UVB cycle and boom! Keep that soil alive.
SupraSPL
Well-Known Member
Glad to see you got some nice nugs! I have a Blue Widow that I love and gets good reviews from friends. All said and done how did the nugs compare against the HPS you are used to?
.35A 12W - 140lm/W - 40%
.7A 25W - 121lm/W - 35%
1.05A 38W - 107lm/W - 31%
1.4A 53W - 98lm/W - 28%
1.8A 70W - 91lm/W - 26%
Digikey's numbers are suspect because they report 5683 lm for a variety of LEDs of different color temps which is virtually impossible. They also use the number 6094 repeatedly. So take these numbers with a huge grain of salt. Digikey did not specify the junction temp of their test but if we use their numbers and assume their Tj was 85c
.35A 12W - 164lm/W - 47%
.7A 25W - 142lm/W - 41%
1.05A 38W - 125lm/W - 36%
1.4A 53W - 114lm/W - 33%
1.8A 70W - 106lm/W - 30.6%
For comparison, brand new 600 HPS bulbs are about 150lm/W, 40% efficient and 2200K. Of course we cannot compare these numbers directly with the LED numbers but it does give some idea at least.
For comparison purposes, here are the numbers from the Cree datasheet, assuming a Tj of 50c (lots of heatsink). This is the way I normally calculate efficiency, using the minimum numbers for the bin.
.35A 12W - 140lm/W - 40%
.7A 25W - 121lm/W - 35%
1.05A 38W - 107lm/W - 31%
1.4A 53W - 98lm/W - 28%
1.8A 70W - 91lm/W - 26%
Digikey's numbers are suspect because they report 5683 lm for a variety of LEDs of different color temps which is virtually impossible. They also use the number 6094 repeatedly. So take these numbers with a huge grain of salt. Digikey did not specify the junction temp of their test but if we use their numbers and assume their Tj was 85c
.35A 12W - 164lm/W - 47%
.7A 25W - 142lm/W - 41%
1.05A 38W - 125lm/W - 36%
1.4A 53W - 114lm/W - 33%
1.8A 70W - 106lm/W - 30.6%
For comparison, brand new 600 HPS bulbs are about 150lm/W, 40% efficient and 2200K. Of course we cannot compare these numbers directly with the LED numbers but it does give some idea at least.
The nugs are dense and the smoke is great. Makes my wife giddy all day.
Blew away my previous DS100 light. Not to mention the smell is really strong. One tiny nug stinks up the whole area.
Considering how small my area is, I think I would be hard pressed to top my output. I pulled 4oz's off one plant and I still had space left over to pull off even more.
Right now I have two plants (C99 and Blue Widow) in my cabinet in hopes to completely utilize all my space and will probably be switching to flower in the next week or so.
I'm striving to pull 5oz's this go round!!
Thanks everyone for your support
samne
Active Member
Thank you very much for all the great information.
I tried searching this cob.
Aliexpress sells cxa3050 at 257 $ per lot (10 pcs).
Can that be real?
http://www.aliexpress.com/item/CREE-XLAMP-CXA3050-LED-chip-WHITE-COB-37V-high-power-50-100W-5000-10000LM-free-shipping/1473865902.html
I tried searching this cob.
Aliexpress sells cxa3050 at 257 $ per lot (10 pcs).
Can that be real?
http://www.aliexpress.com/item/CREE-XLAMP-CXA3050-LED-chip-WHITE-COB-37V-high-power-50-100W-5000-10000LM-free-shipping/1473865902.html
Cococola36
Well-Known Member
I hope it's real lol, but you never know. Could they are just low bin or some what defective in the dimensions of them or something.
Cococola36
Well-Known Member
hey bbspills, you inspired me to do something of the same sort with my old apollo 16 i got lying around. While i won't use all 16 cluster areas (overkill) , I was wondering if these drivers will be suffice for the cxa3050 or maybe even 3070? other than the info on the driver it is 1450ma ( i have 8 of them so i hope they aren't a waste lol)
Those should work just fine for the CXA3050 or CXA3070
SupraSPL
Well-Known Member
They don't specify the part number or bin so I would assume the worst. Better off with a trusted source that takes the time to let us know what we are buying. I'm sure they would not appreciate it if we said we would pay them with 10 bills but failed to specify which 10 bills.
No need for a breadboard if you are using COB leds as you just mount directly to heatsink and solder as they come directly on the pads ready to go.
I only see the need for a bread board if you were using single diodes like the cree xm-l
digimidgi
Well-Known Member
Oh yeah
So what exactly do i need? The COB LED's, LED Drivers, Power supply, Thermal paste, Wires, Heat sinks, A structure with some sort of reflector thing.. What am i missing? I need a dummies guide
Sorry/Thanks a squillion
Cococola36
Well-Known Member
Soon I will have a separate thread for a custom hybrid apollo/ cxa3070 light
ordering up the components soon. i just need to learn how to solder first hahaha