Introducing CobKits.com - specializing in DIY and Citizen COBs

Silver or lead · Nov 16, 2016

Thank you.

Hopefully when people search this particular driver this thread comes up. I did a lot of searching and couldn't get a definitive answer. I know it was answered in this thread but I already have days into searching out the best lights.

Maybe you could clarify this on your website since it is so contrary to common wisdom.

And holy, that thing was like looking at an arc welder.

CobKits · Nov 16, 2016

ok ill put parallel on the page in big bold letters

i wouldnt say its contrary to common wisdom, if you understand cob and driver voltage its relatively fundamental. i sell more of the constant voltage drivers than constant current actually

but yeah, i need some faqs up there!

Silver or lead · Nov 16, 2016

I got it rewired and all is working well. It really is amazing how bright only 100 watts can be.

On last question for now. How efficient is this setup? How many lumens/watt is it putting out. I tried doing the calculator but I only have a phone to work with and it just didn't work for me.

VenomGrower6990 · Nov 16, 2016

Thank you @CobKits i am very pleased with my order. I will ship those extra 6 cobs that you sent me by mistake back to you this week via Priority mail.

Walterwhiter · Nov 16, 2016

VenomGrower6990 said:
Thank you @CobKits i am very pleased with my order. I will ship those extra 6 cobs that you sent me by mistake back to you this week via Priority mail.
View attachment 3832004

I'll take 4!

VenomGrower6990 · Nov 16, 2016

Walterwhiter said:
I'll take 4!

Lol Right!! I have 10 cobs now for my canopy 10 Citizen build i am doing that will be powered by 2 HLG240h-c1050b drivers with dimming. Been saving and planning this for months and i am getting super excited now. Ordering the aluminum tomorrow. Getting closer.

Walterwhiter · Nov 16, 2016

VenomGrower6990 said:
Lol Right!! I have 10 cobs now for my canopy 10 Citizen build i am doing that will be powered by 2 HLG240h-c1050b drivers with dimming. Been saving and planning this for months and i am getting super excited now. Ordering the aluminum tomorrow. Getting closer.

1818s? I got 4 140 heatsinks and holders from northern and wiring and artic paste. just short 4 cobs aND a driver.
Well double to replace my 600w

VenomGrower6990 · Nov 16, 2016

Walterwhiter said:
1818s? I got 4 140 heatsinks and holders from northern and wiring and artic paste. just short 4 cobs aND a driver

4 1812's for the center and 6 1212''s for the outer perimeter all 3500k 90cri.

Walterwhiter · Nov 16, 2016

VenomGrower6990 said:
4 1812's for the center and 6 1212''s for the outer perimeter all 3500k 90cri.

Your doing that gowmau5 open source deal right?

VenomGrower6990 · Nov 16, 2016

Walterwhiter said:
1818s? I got 4 140 heatsinks and holders from northern and wiring and artic paste. just short 4 cobs aND a driver.
Well double to replace my 600w

What cobs are you looking to run? What driver are you planning on going with? You going to run them hard or softer?

VenomGrower6990 · Nov 16, 2016

Walterwhiter said:
Your doing that gowmau5 open source deal right?

Kind of but not the same elaborate build he did with the Cree. Mine will be the budget model with just aluminum L channel. The 80/20 he used is really not that bad on price but once you add the special cut plates for the 10 cobs it jumps up to $200 real quick just for the frame materials. Its a little over $100 to have 10 of those special plates cut from an online machine shop. Mine will be built for a 3x4 space not the 4x4 he did. I dont have room for a 4x4.

CobKits · Nov 16, 2016

venom will your build have the reds and stuff he had?

VenomGrower6990 · Nov 16, 2016

CobKits said:
venom will your build have the reds and stuff he had?

I thought about adding the far red mono's but im going to see how the 630nm peak side of the 90cri does and go from there. Just building a foundation right now so i can start using this on my Incredible Bulk grow for flower. They are 21 days into veg so im hoping to have the room and light complete soon.

Victor6634 · Nov 16, 2016

http://www.rapidled.com/4-far-red-supplement-led-kit/

Ganjineer · Nov 16, 2016

CobKits said:
the photodiode installed on the sphere would normally be read by a picoammeter (basically a benchtop ultra-precision low-current ammeter). It has a BNC and i tried to hook it up to my Li-Cor meter and it read, but read negatively (probably could be fixed with a polarity swap), but it pinned it. possibly resolvable with entering a new constant, and/or addign a resistor in line.

ultimately calibrating the ocean optics USB-2000 (similar to this but mine is the older "non +" model)
using this) is what id like to do as it will give us more data, as the licor has a sharp cutoff at 700 nm.

for now i think i will figure out how to mount the li-cor in there, which is somewhat calibrate-able as i have the constant from a semi recent (this decade) calibration:

https://www.licor.com/env/support/cal/2012-04/instruments/Q45044.pdf

what would be awesome is if anybody with a 3D printer could make me some mounts for these sensors. anybody up for it?

I have access to a 3D printer. If you have a model I can print it, or I can help you cad it up.

CobKits · Nov 16, 2016

awesome. i can bust out a dimensioned drawing. ive only ever done 2d cad so im not up to speed on protoing

Mrherbal · Nov 17, 2016

Could I power 10 clu048 1212's with a meanwell hlg 240h 700b driver??
Thanks

MACDRIZZLE · Nov 17, 2016

Mrherbal said:
Could I power 10 clu048 1212's with a meanwell hlg 240h 700b driver??
Thanks

Yeah, 10 is perfect for that driver and the most you could do.
Using this calculator: http://ce.citizen.co.jp/lighting_led/en/products2/notice_Simulator_ver5.html
I set it to the 3500K, 80 Min, CLU-048 1212
I found that at 700mA(drivers max current) each cob would be at 34.6 volts
Driver can hold a max of 357 volts, so 357/34.6 = 10.3 COB's, so at full current it would be 242 watts at the wall.
I was planning on doing something similar. Good Luck!

Mrherbal · Nov 17, 2016

MACDRIZZLE said:
Yeah, 10 is perfect for that driver and the most you could do.
Using this calculator: http://ce.citizen.co.jp/lighting_led/en/products2/notice_Simulator_ver5.html
I set it to the 3500K, 80 Min, CLU-048 1212
I found that at 700mA(drivers max current) each cob would be at 34.6 volts
Driver can hold a max of 357 volts, so 357/34.6 = 10.3 COB's, so at full current it would be 242 watts at the wall.
I was planning on doing something similar. Good Luck!

Thanks Bud!!...

Ganjineer · Nov 17, 2016

CobKits said:
awesome. i can bust out a dimensioned drawing. ive only ever done 2d cad so im not up to speed on protoing

No problem, if you give me a sketch with dimensions I'll cad it for you. Before I print it I'll send you the models to confirm that they are correct.

Introducing CobKits.com - specializing in DIY and Citizen COBs

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