Discussion in 'LED and other Lighting' started by TimeToBurn, May 22, 2015.
By the looks of it I would say you are rocking it
Thanks, I ask as I’m redoing the frame so it’s sqare and 1mx1m to spread things out abit
IMO, if running those boards w/ cobs, each board should be running at @ least double the watts of each cob because they are a more spread out LES & that's how you will be able to keep more even #'s hittingvthe canopy & less wasted light.
Nice set up bud.
This is the info iv been trying to find for so long, I do feel it’s wasted light, but if I turn the boards up my top leaves burn on the edges, almost like if I had them at 80w a board I’d need the 2ft away lol.
See my dilemma? What would you do? Thanks
Great setup mate. I running a similar setup with 5 Vero 29 cobs and 4 qb120 boards. Boards are at full capacity while the cobs are running 70% at 1.75a.
Have you considered removing the Angelina reflector from the COBs? With a mixed setup such as yours in a closed tent, I would imagine that might be helpful.
Really liked your slick setup mate, keep it up.
Thanks very much iv now put the boards on 183w which is max from the drain vet and turned the cobs down abit, and I did have them off but as soon as I added them and raised the light to suit I seem to get better growth, and means I don’t have to have the light right down on top of them.
Also my plants are different heights also so they help
Nice looking unit! Well done, mate!
If your drivers are dimmable, I would leave it that way. For your 4x4' tent 500-600w will be very good and will bring you excellent results.
But like @dannykay said, I would take off the Angelinas. Could help to avoid light stress.
Also pay attention to good temperature (25-28°C) and sufficient air movement inside the chamber.
Water consumption should not be lower than with HPS.
With a simple lux-meter (e3by, $10) you could easily set COB's and boards so that you have the same brightness across the entire surface. I would set the boards to ~80% and then turn up the outer COB rows until it you get the same brightness at the sides and the corners. If you have found the right setting for even illumination, remember the potentiometer positions(maybe you mark them). From then on it is easy to decrease/increase the intensity evenly.
I have a lux meter but with the 3k cobs and 3500k boards if they match I either need to run the boards at 20w or the cobs at 160 per 3, the 3k is nowhere near as bright as more red. I would use that if they were all the same spectrum
Hmm! That's strange!
I did not see such high differences between 3 and 3,5k spectrum. Less than 5% usually...
Nevertheless, I would turn up the boards first, because they have the better distribution, and then turn up the COB's until it looks uniform. But I think you already do that....
Could be that if I measure at 12inchs the lights don’t blend enough, maybe il try 18 inch’s and see how it goes
So iv spread everything out now so it’s not so cramped into a frame that is 1mx1m so the cobs are roughly 16 inch’s on centre with the boards in the centre, I think I’m going to source another driver so I can run the boards at 300w and then 100w or more to each set of 3 cobs.
Seems much more even spread of lux at least now not so many hotspots on the meter
How it looks now.
Photons are buzzing.......sweet rig !!
My design of a remote driver/limited height fixture. Yeah, the
various SMD strips and boards are a better choice for limited height but I put this idea in my head 2 years ago and couldn't get rid of it until I built it.
View attachment 4075792
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View attachment 4075795
It consists of Mean Well HLG-120H-C1400B driver, Citizen CLU048-1818 3000K 90CRI CoB, 16 inches apart, MechaTronix IceLED 550 active heat sink. 160W at the wall, includes MW APV-12-12 fan driver.
I dig it!
Here is my latest build, the cobs are warm white cheapo's, 100 watt chips, 3500ma max, running at 1400ma. Still need to get the dimmer hooked up. Next up are 2 similar except using luminous cmx 22, going to 9" spacing on the cobs and an A drivers.
I've been working on designing my own custom LED grow light for the past couple of months. Here is some pix of my prototype: Sproutly LED.
100w multi-color LED.
Bluetooth smartphone control app
built-in temperature + humidly sensor
programmable light cycle and spectrum control
Thanks, it's still looks like a rats nest with all the wiring. Compared to the quantum board fixtures these are a pain with all the wiring, I guess I thrive on figuring things out and the build process, I spent about 6 hrs today soldering and figuring things out.
Oh nice and clean build! What is the enclosure made of? How did you make those cuts so perfectly?
Mines pretty vanilla compared to this.
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