When you make a series of videos that contain like literally all the information you need and they're still super relevant and helpful 5 years later, my guy, you have done well. Thank you so much for sharing your knowledge and research.
Thanks for the great videos. I would like to know something about distance and discreet diode spacing in relation to how close you can hang lights to the canopy. If you have a light that is say 500w and you hang it 3 ft above the canopy to get a specific spread of the light, say a 4' x4' coverage, and you have an average par of some given # at that height could you take those same diodes and spread them over say a 4' x 4' space and lowered them to say about 8" over the canopy would/could you achieve the same par but have a more uniform coverage of the space. I am using par , could be photon but the basic question remains. Is this a good idea to pursue?
hello growmau5 I watched your videos and am very enthusiastic about your LED lamps. Now I would like to build something for my 1.20x1.20 tent (1.44m2). Now there are several problems. 1. I don't speak English (Google Translater). 2. I understand even less about electronics. 3. Are there sure to be new LED technologies and new findings from you? would be cool if you could make a video for dummies
so thankful ! can u please do a vid for covering two 4x4 trays (4x8) i want to run 8 cxb3070s from plc's bins... off two drivers.? is that enough light?
Im building 6x lights each with 4x CXB3590 3000k 90cri 36v cobs. Was going to use Meanwell HLG-240H-C1750B for each 4x assembly. Rated current V is at 143v on the driver, and the 4x cobs at 144v. Do you think i would get away with this or is it just too close? :)
Thank you, I've watched all your videos in the DIY tutorial, thanks for the information, it was REALLY helpful. Still wondering about one thing. You choose 3500k over 3000k because of the lumen drop and the fact that 3500k is better suited for veg state. I wonder if you would make a light aimed at flowering only the 3000k might be a better choice based on the offered spectrum. The lumen drop might be compensated by the spectrum. If you look at tneon lights, grow lights are around 6000k, but the flowering lights are 2700k. Any thoughts on that?
1st. of all you are the SHIT!! 2nd. can you do it for a 4x4 so I can replace my 600 HID 3rd. I understand how to run the drivers to the cobs. My biggest confusion is connecting say 2 or 3 drivers together so I can plug it into the wall and not fear burning my house down.
+growmau5 Also interested in a 4x4/16sqft build. Maybe in both a cost effective (8x chip + 2x driver?) and a full-on efficiency build (12x + 3x, or a 16x something?). Trying to find a cost effective way to introduce others to COB LED, and most interest seems to be in the 4x4 tent size.
Hey man. I'm looking to build a light for a black orchid Geno box of size 50x100x50cm. Looking to create something like a T5 setup across the top but with LEDs of course. There's not much height in the tent so would need to be a low profile, Max efficiency, low heat, par output of maybe 400 just for keeping cacti and succulents compact over winter. Would love to hear your thoughts. I'm new to building but I used to build drones back in the day so have a decent enough knowledge to work from. Is it possible to do this stuff without soldering? Sick of that stuff after building drones as you can imagine ha.
You confused me with the driver examples, you speak of a different one than shown, Then you say HLG can't run in series without blowing all cobs. Then you show how to run in parallel, but say you don't use that set up. Kind of wish you just explained the facts of what you use. What parts do I need to buy to build what you currently use. I know you give a parts list in S2:E2 . Most of us get confused when you throw in variables & optional "you could do this, I didn't but you could" scenarios. I barely wrap my head around ohms law. Just looking at the models and sizes of HLG drivers is confusing on different sites. What to stay away from?36V & below? But definitely thank you for your videos, probably most informative videos on led understanding on youtube even if I personally have to watch each one 10 times.
+growmau5 I did watch the rest of series and you did cover my answers in those videos. I am still struggling with complete understanding and financial means. Thanks for taking the time to do this. it helps for sure. I know you're a Cree guy, but what do you think of 100W (equivalent) 7 spectrum grow light LEDs on eBay (red/blue) ?
Very good video bro . I Just did that exact setup . No college or any book smarts but I managed to figure out how to do these cob builds . I have spent countless days staring at my phone on the internet. I relied on the smart folks like you that have allready figured it all out . I'll use your video from now on when I explain it to friends. Very well put together and excellent explaining skills . Thank you !
Jeez man, rocking the house over here. Thanks for all your hard work. I know how much it takes to make an educational video. Props and keep on growing. Much love from the DGC!
excellent video! thanks a million! I give my vote for 3x3 :-))) I notice an Alpine 64 Plus on your desk, do you prefer it over the 11 model because of the flat radiator surface? :-)
What happens if your driver has an output voltage far greater than your COB array? Example: your cobs have a total of 240v and your driver has an output voltage of 350?
I have a 7'x 6' room and a 12' x 7' room that I am turning in to a grow space. I have been slowly purchasing my LED panels but I want to make my own. What type of panel would work best and how many? I am having a hard time finding panels that have more that just red and blue so I mix with T8s. One of my panels that have all the colors is blown out and it cost 500.00 each. I am trying to understand how this stuff works so I can fix it. When I opened the panel up all the identifying numbers were scratched off :(
I will just mirror mine from one you explain and run through ,I'll make something to fit and build my area around my light haha not my light around my area :-)
amazing stuff man just watched it a second time and it really helps intake all the info, im going to make a LED panel with some Cree COBs as well as smaller, color'd diodes to help spike colors that up the PAR for my 2x4 grow tent
They are the same efficiency at any given wattage. For example, four CXB3590 36v COBs ran at 1400mA and four 72v COBs ran at 700mA are both pulling 200W, are 51% efficient and produce the same amount of PARw.
Excellent intro video on the subject. To the point, stays on subject, provides lots of info without going into extreme details. which would confuse the issue. Moving on to the next one. Thanks.
GREAT information, I could have used it a month ago. I got some help from a local laser producer and he showed me the ropes on how to do an LED install. Funny thing is every time I had a question, his answer was " Ohms Law" LOL it took me a while to get it but yea. I will be reviewing this video again, firkin great breakdown.
Thanks for sharing, I have been wanting to go with LED for some time but don't want to just pay out the butt for fixtures I am not sure will perform as advertised. I am going to go through and build enough lights to cover an 8'x10' area to really see for myself if I can get good results from them. Thanks for all the DIY info so I can do this in the most cost effective manner.
Bro , i really appreciate your video!!!! i learned alot !! currently i am trying to build DIY grow light for my fish farm to grow ALGAE .....THANK YOU THANK YOU!!!
hi mate, thanks video, i will be watching and subscribing, i need or interested making one, my size room i need is 5W X 6L x 7H GROW TENT I NEED AROUND 1000W USAGE WAT'S SO IT USES 1000W LIKE A HPS, BUT I KNOW A 1000W BUILD OF ONE OF THESE WOULD PRODUCE AROUND 1500W HPS I THINK?
Hey man, awesome videos! I have a question...If I connect 10 x 22.5V; 480mA; LED stripes, can I use a HLG-185H-C700A to run them all serial and most important savely? It'S for a space of 100x60 cm LED Stripes: www.digikey.at/product-detail/de/samsung-semiconductor-inc/SI-B8V11156HUS/1510-1580-ND/6149745 Driver: www.reichelt.at/Treiber-mit-festen-Anschlussleitungen/HLG-185H-C700A/3/index.html?ACTION=3&LA=2&ARTICLE=148063&GROUPID=7259&artnr=HLG-185H-C700A&trstct=pol_8 Otherwise I think I could connect them with 5 smaller drivers, who each runs two of the stripes.. What's the better option in your opinion ? Driver alt.: www.reichelt.at/?ARTICLE=170908&PROVID=2788&wt_gata=10123462554_56448902634&PROVID=2788&gclid=CjwKCAiA8bnUBRA-EiwAc0hZk5uUurr8WeuQxIOSzqUm4P6zaGYklyOzcnXCora7d5GnMJShwEQGehoCWRAQAvD_BwE
can you use dis computer power source? 150W Input 100V-240V/Output 12V 15A Switching Power Supply Converter Transformer to drive 6 xml2 led's at White LED Light Lamp DC3.2V-3.75V Hot?
hi Grow Mau5 I like to have a hand to fit my 2 best grow room ... I have a DR150W drakroom measuring (150 X 90 X 200) and a DS120W darkstreet measuring (120 X 60 X 170) what would be the best configuration for this? How cxb3590 and what drivers used for better efficiency? thank you very much
Grate info but i thought the whole point of cobs was not having to run a driver ?????? Iv just orderd some cobs and ir bords i bought a driver for the ir but not the cobs pls help mr mouse ...🤟👍👍👍👍👍👍👍🌴💨💨💨💨💨🤙🤙🤙🤙💯%grate info
Or you can use a driver that regulates.. Pretty much any computer power supply for example. I can hook up a 12v1000ma led to a 12v13,000ma channel and... ~900ma flows through Also 2x12v LEDs in series makes for 24vf
(fv)(i)=w (36v)(1.4ma)=50.4w not 56w. correct me if I'm wrong please. same with the 72v x .7ma=50.4. great in depth videos, keep up the great work. could you send me the exact parts list of the light bar that you made in this video. also, correct me if I'm wrong but would i have to make 2 seperate light bars, 1 for veg @5000k and 1 for flower @3000k or what would you recommend?
Hi growmau5. Just wonder if you could address some of these criticisms of COB LEDs. It's taken from the Spectrum King website. Thanks. C.O.B Myth There are only three reasons to choose a C.O.B. LED: Reduce the cost of materials to make the LED Save money by eliminating the need for circuit boards Group more LED diodes into one small area Standard self-contained diodes are the leading LEDs in the industry and have performances that are double that of C.O.B. LEDs. Every LED that claims to be 10, 20, 50 or even 100 watts is a C.O.B. C.O.B. lights offer lower efficiency and overall light output. By adding and cramming more diodes into a tight array that share the same substrate, heat becomes a big issue. As the C.O.B.’s run hotter, they: Emit fewer lumens Have a lower efficiency Develop a shorter lifespan
Damn bro, stop growing and start teaching. I am a dummy from the south, and I can understand this. I just dabble in electronics. I want to build a light, but I was so confused on the driver numbers (voltage and mA), and how many COB'S could be ran with a single driver. I had like 10 "oh shit" moments in like 2 mins, lol. I gotta replay this a couple of times and I will watch all the parts. I gotta finish the video, lol. DUDE GROWS!!!!!
how far are we away from the next advancement?200 lumens per watt and beyond.? and will someone be producing a system to match the latest white led.? will it be a mix of different colour temps or just a couple like 3k and 4k.? i would buy a 12x36 inch panel today if i could source one.maybe a program dimmable one like medgrowers.i would include a wider variety of whites possibly ranging from 3k to 7k.PLEASE MAKE A COMMERCIAL VERSION.white led rocks.i think they can out perform a de hps but not sure it makes a difference during flower as i believe the hard work is done in veg.id love a consistent led light source if it did the whole job.you are proof it works..how come more people aint producing them commercially.?
Hello, I have a question about drivers and cobs. Lets say I am running 4 citizen clu48 1212 on a hlg-240h-c1750. It has a output voltage of 143 however, the cobs require 144. will the driver fail me, or is there a margin on these things?
if a COB says 36V, how do we know it's actually 34-35? If we went strictly based on the numbers, we'd have to assume it can only fit 3, so how are we supposed to know that it can actually fit 4? Also, based on the LED efficiency droop, which says as current increases efficiency decreases, wouldn't the 72V COBs run at 700mA be more efficient than the 36V COBs run at 1400mA? Is there any advantage to parallel wiring if we did want to go with the advanced method and use fuses / resistors /etc?
If you dont mind me asking, Im building for a 4v4 grow room and was going to use 10 bxeb-l1120z-35e4000-c-b3 for even light distribution. My question is what are the advantages of using a COB vs a light similar to this?
Do you have any of those light bars for sale?I have 8 vero29 cobs and some mean well drivers but I'm not sure if they will pair. I have Lpc-100-2100 for a single cob build and hlg-150h-36b to run 2-3 cobs per panel.
Any advantage of wiring series/parallel..?? Each pair wired separably in a series, then the two series wired parallel to the driver... Would this give more flexibility in choosing drivers or amount of LED's run on one driver..?? Brain knot..??
GrowMau5 brotha I'm a huge fan and one of the few that know wut u speak on is generally the right way, I've got a issue ,I've ordered a couple of the cheap 100w drivers and hooked up to my QBs,all I'm getting is a blink ON blink OFF, unlike the mw hlg 120h 54a it makes the qb panels work rite ,did I just buy drivers that only work for cobs?? It reads qd-100w Ac 85-265v DC 27-38v DC 3000ma Ip65 thanks so much bro
I check out cree website looking at dios, Fv 11.5 at 350mA, max mA 1050mA. how do I precisely find out Fv if I want 1000mA running on that diote. it would no longer be 11.5
hey man I love your videos!!! I am just a bit confused and dont want to F*** it up so I just wanted to ask. I have 3 50 watt full spectrum led cobs. My friend gave me this driver that is 12v 12.5a 150w output which I think will blow my leds? Am I right? What do you recommend?
a common tent size in the eu is a 1mx1m and the cobs should replace the 600w hps I see most people use in this set up. my guess is 2x 4 3590 1400ma 200w (total 8x 3590 =400w led) maybe in 3-2-3 placement with the passive pin-heatsinks,in combination of warm and cool spectrum and extended cord so the drives can be mounted outside of the room If possible with the 80/20 Mounting rail instead of the L shaped alu
Holy shit, I went blind about half way through that! I know a little about electricity and dick about LED's. Been growing off&on for a decade and would love to learn enough to diy my self some supplemental LED's for my 6k Gavitas room. You suggest any books to get me up to speed? Enjoy the video and your step by step. Your channel is needed for the growing community, thank you 👍🏼
Hey bud, thank you for the great videos. one thing you didn't explain, which I'm a bit confused about it the ma relation to v. I watched and tried to follow on of your first videos and purchased the Meanwell HLG185h-c500b with the cxb2530's. I tried to place just one LED on the driver, which worked for a while but then when I turned it off it didn't want to turn back on and then suddenly blew the LED. Is this a problem with over driving the LED? That driver only has a ma of 500 instead of what you were suggesting of 1400? but has a lot more volage output. Can you explain why you went this way on the older video? and how can I understand how many I can put on the driver? I would prefer to not blow any more COB's if I can help it :)
Love it man. I have to admit I was yelling at you about thermal runaway until you mentioned resisters, lol. I was yelling about resisters and fuses and circuit breakers, lol. I'm a LED noob but have a solid background, expect questions from myself and probably my son as well. Keep makin the vids man. PEACE and keep growin, I know I will.
what up!! nice channel! im also interested in a 4x4 setup tutorial for noobz.. I would like to know what parts are needed and where can you find them. also can you explain how many lumens does a 400w or a 600w HPS PUTS OUT verse the DIY setup you talk about... stay green!
i have an 8x8 greenhouse, but I want to be able once the sun isn't promoting adequate photosynthesis to run some LED's to complete the 18/6 cycle. Using what I can from the sun for those wavelengths that NO artificial light can reproduce, however it is almost September so I'm switching the lights on at 1815 and cutting them off at around 0015. I have to check what time sunrise is but you get it..
I HAVE A QUESTION FOR A BUILD THAT A LOT OF "DIY PEOPLE" MIGHT ALSO BE HAVING. *** EVERYONE PLEASE FEEL FREE TO POST ANY ANSWERS, HELPFUL INFO. SO MY QUESTION IS ABOUT WHEN USING THOSE "SMART COBS" (THOSE DIY LEDS THAT EACH HAVE IT'S OWN DRIVER BUILT IN TO THE COB ITSELF SO NO SEPERATE DRIVER IS REQUIRED) THEY COME IN DIFFERENT TYPES LIKE- PUSH WIRE CONNECTIONS OR SOLDER STYLE, & ALSO EITHER 120V OR 220V, & ALSO CHOICE OF DIFFERENT SPECTRUMS. SO I AM USING THE 120 VOLT (I'M IN USA) "PUSH-IN-WIRE" TYPE, I HAVE A FEW "FULL SPECTRUMS" & A FEW "WHITES"(I FORGET SPECIFIC COLOR TEMP, THIS DOESN'T EFFECT WIRING AT ALL) ****--WHEN WIRING MULTIPLE ONES TOGETHER CAN I JUST WIRE THESE IN "SERIE'S" AS USUAL? OR ***DOES IT CHANGE ANYTHING BECAUSE OF EACH COB HAVING IT'S OWN LITTLE PERSONAL, INDIVIDUAL DRIVER, ETC? ***ALSO HOW MANY TOTAL CAN BE SAFELY WIRED TOGETHER ALL ON THE SAME SINGLE PLUG? THANK YOU FOR ALL ANSWER'S, REPLYS, & HELP!!!
I have a 4x8 tent with a 8 site DWC bucket system and want to make a cxb3590.... where can I find a list of everything I need? I want a 4 cob light bar ... I would love for u to do the whole go through the sites n price everything out for this build... I was thinking having 2-4 light bars in my 4x8 tent with 4 cob cxb3590's per bar.. how my 3 tent system works there r times there 16 buckets in bud tent n times only 8 so say turn 2 on when 8 and all 4 on when 16... please help I don't wanna buy mars pos
ok so i have 4 luxeon deep red 1 up leds per strand/light a 3w/700ma each totalling 12w of draw per light fixture x2 so a total of 24w at 700ma, ill be using a mean well APC-35-700 too run 2 fixtures/separate strands with 4 leds each my question is will it be a problem if i solder the positive/negative wires from both lights/strands together & then solder these to the single positive/negative wires coming off the driver ? will this work ? or am i better off going with 1 driver per light .. thanks in advance much appreciated. great work has clarified a lot on diy leds.
This may not be the place to ask this, but it's where I am when thinking of it, so here goes: Can a COB span over a t-slot in a heatsink, such as the one found here: www.heatsinkusa.com/8-460-led-t-slots/ ? I understand all about thermal pastes, pads, etc., I'm just wondering about having a 1/8" "channel" through the middle of the COB that isn't as well sinked as the rest of it is. Using a pad, vs. paste or epoxy, would at least allow for some sinking, I suppose, so that's probably the best approach, should it prove viable. What are your thoughts? Oh... and thanks for taking the time to make these vids. Takes me back to my electronics schooling (which began before the days of integrated circuits... and yes, I've actually used a rotary dial phone.) ;-)
Why I can't make amount in series and turn them streigh to 220v? I mean if I want to turn 800w Led a Led driver will be same price of Led... What can I make to get alternative for Led driver? Thanks for the teaching 😊
I'm new to the scene and just like any noob I'm eager. so eager I went out and bought myself three cxa2530 and a mean well CLG-150-36A driver. the mistake that I made is that these components are not compatible. the next mistake wiring the first light in parallel to my driver then connecting the next two lights in series with that light(pop). does anybody have any suggestions what I can run on this CLG-150 - 36a (constant current 4.2a) three lights in series this time. by the great video
Mr. Growmau5? Why is video 3/7 listed as private in this playlist/series? Please to be fixing for happy grow! I keep recommending this playlist to noobs :) thanx for all you do sir!
Man, I don't really get your explanation of cob as eggs and the MeanWell driver as the egg box... I find it kind of confusing. Even wiki says "Strings of multiple LEDs are normally connected in series. In one configuration, the source voltage must be greater than or equal to the sum of the individual LED voltages." So I can only agree with your reasonning but I still don't get it, could you explain to me which law is behind that please ?
If a Cob can only handle 2.8 Amps what is the safe zone to push it when selecting a driver. I see you were saying 1.4 But If I want Brighter Lights a little bit warmer but still safe to operate would be ideal is 2 Amps Safe? In a 4-5 Cob Settup?
I am working on doing vertical grow towers and have not been able to find a light good for that. Especially LED(the ole school hanging HPS aside) Now I can make my own custom corn cob style kine LED where I can set 3 channels, One for bottom light on when I have the seedling in the center, one for back half light on,(for when the system is closed in the circle configuration) or for just front half on, for when I'm running the system open configuration. (like I am not due to space restrictions)
Hey, I like what you are doing. But you should explain the difference between constant current and constant voltage drivers. Because the problem you describe with LEDs in parallel would only happen with a constant current driver. With a constant voltage driver each LED works independently of each other. So, one burning out doesn't kill the others.
Wow this is excellent!! I want to build one!! I discovered Greengenes Garden's channel a few months ago and learned a lot from his diy cob led build. YOu probably know him. You really explain it well. What I would like to know is where you get all the components? Any source info would be great.
What if the total forward voltage of the LEDs are lower than the drivers voltage is ? Say 9LEDs*12V = 108Vbut the LED driver is 148V. Do I have to have the exact voltage from the driver to match the fV ?
i WAS WATCHING in one of your vidios that was for new people. it was about 1.5 hrs you had wookie as your producer and another guy asking questions great vidio but I can not find it you were also answering questions from chat please point me in the correct direction
Bro, i need help! Any way i can talk directly to you would be great. I get its not brain surgery just stuck and really want to not be stuck. Obviously bc of efficiency and overall quality. My trouble seems to be matching cob or cobs with capable driver.
Maybe I'm asking completely bullshit right now because I don't know anything, but why are light bulbs just light bulbs and with LEDs you have to cool it and all this stuff?
Just as a hypothetical, could one use two hlg-185h-c1400's in parallel to achieve 2800mA for four 4 cxb3590 cobs assuming there is enough heatsinking? I looked at supras charts for cob driver matches and I was trying to find a good match for running the cobs harder. Thinking it'd be awesome if the drivers will work fine in parallel. You are the fucking man for these videos!
HI that's is awsome for a Noob like me. Thanks to you i get little bit knowledge more. But i have one problem i will make my cob lamp set for garden 0.6 cm for 0.4 cm that size is not standard i think to use two cxb3070 runing at 1400ma if that is enought for that tent ? if i can do somethig better?
Not sure if it's been asked, is there any advantage to parallel wiring over series, or vice versa? Or is it just a different way to wire when having a different driver? I am looking replace my 600 watt hps with something a little more efficient, but wanna rock the house.. as you say. My grow area is a 6.5 ft x 13.5 ft room but use two nets that are about 4 ft square. So really it can be just about any size coverage. I enjoy your channel and it helps a noob like me. I think I have the basics pretty much down thanks to you.
Just found your videos, most helpful info I have found so far! I have a quick question. If you are still around. I'm interested in using cobs, ir, uv, also some colors. Difficult?
you've made me want ton convert I've been looking at cobs why isn't anyone use cxa3590s they seem to be the biggest. If you wanted to run let's say 10 of the cxa3590s what drivers would you use how many to a driver I'm a medical patient for epilepsy so every penny saved on power is a blessing.
Ok, so here's a real back to basics question. In the beginning you talk about having a 'hot' wire on your AC current side. I thought the whole point of alternating current was that you don't have a 'hot' wire (or common wire, for that matter). What am I missing? Thanks.
Bro I know you probably make a buck off of viewership and whatnot, but I really want to give you some props for putting so much effort into informing people like me. I should also mention that the new "first video" did actually help me understand what I'm sure would have seemed a much more heady video had I watched this first instead. Thanks.
Interested in doing a diy cob kit for a 4x12 table, I've looked at fluence spyders and doing 3 of those but this definitely has my attention, what would you do on a 4'x12' table ?
Ima put this out in this forum because I think I can get the best knowledge from a channel and viewers like this. I'm getting started with small lighting using Solar. I have to consider the amount of watts output because it's a bit of a charging thing also on the other end with the solar panel. CREE T6 LED Chip
thank a mill...they seem identical because they both say they constant current. however the one you linked is the one...glad i waited for your guidance...phew!
Hi, if i have a driver constant current of 76v and 3amps and pair 2 leds of 38v both of 3amps will work right but if one demage another will burn too to have to work alone with 78v?
thanks this video has my foot in the door. I am a straight noob and am starting from scratch and am hoping to have a well rounded knowledge of building LED's and matching parts with ease so with in a year I can design my own lights. I also need to get familiar with the extrusions and the bolts you use and do I cut the extrusions my self to size? Thanks,
Hey Growmau5, been trying to figure out how to get in contact with you. Long story short you got me into growing and I just got VC funding to start rec facilities. I really think you should hit me up when you get a chance. Would love to do some business with you. This is all legal and we could easily create an insane amount of youtube content.
Hey Man, First i just wanna say thx for taking the time to make this series to helps us noobs out. I was hoping i could use my old computer power supply to power the COBs/fans instead of buying one of those mean wells. Is that possible? Ive been searching for anything like it online and haven't had much luck. any help would be greatly appreciated :D
this LED are for grow or flowering??? What is better LED to grow and to flowering??? what about full spectrum led?? ROOM 2x2 is good ideia put 4 LEDwhite and 1 Full spectrum???could you help me please?
When you make a series of videos that contain like literally all the information you need and they're still super relevant and helpful 5 years later, my guy, you have done well. Thank you so much for sharing your knowledge and research.
A must...Alaska electric prices are killing me.......Thanks Growmau for bringing it down to a level we all can understand.
wow I learned more in 19mins here than hours spent reading online, great video growmau5 thanks for sharing
Invaluable information. Thanks for the demo!!!
Thanks for the great videos. I would like to know something about distance and discreet diode spacing in relation to how close you can hang lights to the canopy. If you have a light that is say 500w and you hang it 3 ft above the canopy to get a specific spread of the light, say a 4' x4' coverage, and you have an average par of some given # at that height could you take those same diodes and spread them over say a 4' x 4' space and lowered them to say about 8" over the canopy would/could you achieve the same par but have a more uniform coverage of the space. I am using par , could be photon but the basic question remains. Is this a good idea to pursue?
hello growmau5 I watched your videos and am very enthusiastic about your LED lamps. Now I would like to build something for my 1.20x1.20 tent (1.44m2). Now there are several problems. 1. I don't speak English (Google Translater). 2. I understand even less about electronics. 3. Are there sure to be new LED technologies and new findings from you? would be cool if you could make a video for dummies
so thankful ! can u please do a vid for covering two 4x4 trays (4x8) i want to run 8 cxb3070s from plc's bins... off two drivers.? is that enough light?
dude you rock!!!!!!!!keep it on
thanks for the info !
which heatsinks and drivers should I use in my tent? 23"*23"*47" ?
thanks
How many cobs would I need to cover a 10x10 space? Going to build my own like you did here.
Im building 6x lights each with 4x CXB3590 3000k 90cri 36v cobs. Was going to use Meanwell HLG-240H-C1750B for each 4x assembly. Rated current V is at 143v on the driver, and the 4x cobs at 144v.
Do you think i would get away with this or is it just too close? :)
3590 36v @ 1.4 VS 3590 72v @ 0.7, Will there be a difference in efficiency / lightoutput?
Thank you, I've watched all your videos in the DIY tutorial, thanks for the information, it was REALLY helpful. Still wondering about one thing. You choose 3500k over 3000k because of the lumen drop and the fact that 3500k is better suited for veg state. I wonder if you would make a light aimed at flowering only the 3000k might be a better choice based on the offered spectrum. The lumen drop might be compensated by the spectrum. If you look at tneon lights, grow lights are around 6000k, but the flowering lights are 2700k. Any thoughts on that?
gotta love when someone gathers all the info and puts it in one spot thanks man #growers love
Lol who is this
+Malik Spydr growop hey thanks I see it plainly and as soon as I get the extra cash I'm in, keep it up
seconded
Give Buddy some belly rubs for me!
1st. of all you are the SHIT!!
2nd. can you do it for a 4x4 so I can replace my 600 HID
3rd. I understand how to run the drivers to the cobs. My biggest confusion is connecting say 2 or 3 drivers together so I can plug it into the wall and not fear burning my house down.
He is the shit ! So glad I found his channel months ago
+growmau5 Also interested in a 4x4/16sqft build. Maybe in both a cost effective (8x chip + 2x driver?) and a full-on efficiency build (12x + 3x, or a 16x something?). Trying to find a cost effective way to introduce others to COB LED, and most interest seems to be in the 4x4 tent size.
Mr. growmau5? why is video #3 in this series listed as private?
I recommend these videos to tons of people.
1:35 unicorn shadow animal. Thanks for providing all the LED knowledge, bro!!
Hey man. I'm looking to build a light for a black orchid Geno box of size 50x100x50cm. Looking to create something like a T5 setup across the top but with LEDs of course. There's not much height in the tent so would need to be a low profile, Max efficiency, low heat, par output of maybe 400 just for keeping cacti and succulents compact over winter. Would love to hear your thoughts. I'm new to building but I used to build drones back in the day so have a decent enough knowledge to work from. Is it possible to do this stuff without soldering? Sick of that stuff after building drones as you can imagine ha.
You confused me with the driver examples, you speak of a different one than shown, Then you say HLG can't run in series without blowing all cobs. Then you show how to run in parallel, but say you don't use that set up. Kind of wish you just explained the facts of what you use. What parts do I need to buy to build what you currently use. I know you give a parts list in S2:E2 . Most of us get confused when you throw in variables & optional "you could do this, I didn't but you could" scenarios. I barely wrap my head around ohms law. Just looking at the models and sizes of HLG drivers is confusing on different sites. What to stay away from?36V & below?
But definitely thank you for your videos, probably most informative videos on led understanding on youtube even if I personally have to watch each one 10 times.
+growmau5 I did watch the rest of series and you did cover my answers in those videos. I am still struggling with complete understanding and financial means. Thanks for taking the time to do this. it helps for sure. I know you're a Cree guy, but what do you think of 100W (equivalent) 7 spectrum grow light LEDs on eBay (red/blue) ?
+growmau5 man u should be a professor, I see this plainly thanks I'm in.
Kentucky Bluegrass
Michael Huguley he is a professor at grow mouse academy.
Very good video bro . I Just did that exact setup . No college or any book smarts but I managed to figure out how to do these cob builds . I have spent countless days staring at my phone on the internet. I relied on the smart folks like you that have allready figured it all out . I'll use your video from now on when I explain it to friends. Very well put together and excellent explaining skills . Thank you !
Jeez man, rocking the house over here. Thanks for all your hard work. I know how much it takes to make an educational video. Props and keep on growing. Much love from the DGC!
***** No problem! Thanks for teaching me something!
excellent video! thanks a million!
I give my vote for 3x3 :-)))
I notice an Alpine 64 Plus on your desk, do you prefer it over the 11 model because of the flat radiator surface? :-)
3x3 are plz Whit the 3590
What happens if your driver has an output voltage far greater than your COB array? Example: your cobs have a total of 240v and your driver has an output voltage of 350?
have you figured it out already? i wanna know this too..
You are good as long as you don't exceed the allowable current
I'd like to know that too... If you put more voltage into each led couldn't that be bad ?
I have a 7'x 6' room and a 12' x 7' room that I am turning in to a grow space. I have been slowly purchasing my LED panels but I want to make my own. What type of panel would work best and how many? I am having a hard time finding panels that have more that just red and blue so I mix with T8s. One of my panels that have all the colors is blown out and it cost 500.00 each. I am trying to understand how this stuff works so I can fix it. When I opened the panel up all the identifying numbers were scratched off :(
I will just mirror mine from one you explain and run through ,I'll make something to fit and build my area around my light haha not my light around my area :-)
Ok, Private Pyle
Why is part 3 private?
36volts and 1400mA = 56W?
72volts and 700mA = 56W?
in both cases it is 50,4W or am I wrong?
amazing stuff man just watched it a second time and it really helps intake all the info, im going to make a LED panel with some Cree COBs as well as smaller, color'd diodes to help spike colors that up the PAR for my 2x4 grow tent
What is the PAR watts/efficiency equation? What is the difference between running 2 x 72v chips @ 700ma Vs 4 x 36v @ 1400ma?
They are the same efficiency at any given wattage. For example, four CXB3590 36v COBs ran at 1400mA and four 72v COBs ran at 700mA are both pulling 200W, are 51% efficient and produce the same amount of PARw.
The four chips can be spread out for more even coverage.
Excellent intro video on the subject. To the point, stays on subject, provides lots of info without going into extreme details. which would confuse the issue. Moving on to the next one. Thanks.
GREAT information, I could have used it a month ago. I got some help from a local laser producer and he showed me the ropes on how to do an LED install. Funny thing is every time I had a question, his answer was " Ohms Law" LOL it took me a while to get it but yea. I will be reviewing this video again, firkin great breakdown.
This was incredibly helpful! Answered my questions about what to do with these LEDs and drivers I've been picking up but uncertain how to use.
Thanks for sharing, I have been wanting to go with LED for some time but don't want to just pay out the butt for fixtures I am not sure will perform as advertised. I am going to go through and build enough lights to cover an 8'x10' area to really see for myself if I can get good results from them. Thanks for all the DIY info so I can do this in the most cost effective manner.
led works, we produce led grow light for more than 10 years, our company name is SeeGree, we have a lot of new models, we provide 5 years warranty.
Bro , i really appreciate your video!!!! i learned alot !! currently i am trying to build DIY grow light for my fish farm to grow ALGAE .....THANK YOU THANK YOU!!!
what's the difference between the hlg-185h-c700a and the hlg-185h-c700b? is the dimming the only difference?
HELP!!!!! WONDERING IF THIS WILL WORK?? -noob
my 2x2 set-up plan:
* LED (4PCS):
Power: 50W
Voltage: 32-34V
Lumen: 50W 4000LM
Forward Current: 50W 1750MA
Color Temperature: Warm white 3000-3500K
DRIVER:
Input Voltage:85-265V 50/60HZ
Output Voltage:30-65V
Current: 285-315mA
Respectfully, could I pay you to make me a LED that is capable of an area 3x4 , height up to 4 feet ?
i would love to see a buiold for a 4x2. i have a 4x2. and i see some lights with red and blue diodes. does that make a diffeence with the cobs?
hi mate, thanks video, i will be watching and subscribing, i need or interested making one, my size room i need is 5W X 6L x 7H GROW TENT I NEED AROUND 1000W USAGE WAT'S SO IT USES 1000W LIKE A HPS, BUT I KNOW A 1000W BUILD OF ONE OF THESE WOULD PRODUCE AROUND 1500W HPS I THINK?
Hey man, awesome videos!
I have a question...If I connect 10 x 22.5V; 480mA; LED stripes, can I use a HLG-185H-C700A to run them all serial and most important savely? It'S for a space of 100x60 cm
LED Stripes:
www.digikey.at/product-detail/de/samsung-semiconductor-inc/SI-B8V11156HUS/1510-1580-ND/6149745
Driver:
www.reichelt.at/Treiber-mit-festen-Anschlussleitungen/HLG-185H-C700A/3/index.html?ACTION=3&LA=2&ARTICLE=148063&GROUPID=7259&artnr=HLG-185H-C700A&trstct=pol_8
Otherwise I think I could connect them with 5 smaller drivers, who each runs two of the stripes..
What's the better option in your opinion ?
Driver alt.:
www.reichelt.at/?ARTICLE=170908&PROVID=2788&wt_gata=10123462554_56448902634&PROVID=2788&gclid=CjwKCAiA8bnUBRA-EiwAc0hZk5uUurr8WeuQxIOSzqUm4P6zaGYklyOzcnXCora7d5GnMJShwEQGehoCWRAQAvD_BwE
can you use dis computer power source? 150W Input 100V-240V/Output 12V 15A Switching Power Supply Converter Transformer to drive 6 xml2 led's at White LED Light Lamp DC3.2V-3.75V Hot?
hi Grow Mau5
I like to have a hand to fit my 2 best grow room ...
I have a DR150W drakroom measuring (150 X 90 X 200)
and
a DS120W darkstreet measuring (120 X 60 X 170)
what would be the best configuration for this?
How cxb3590 and what drivers used for better efficiency?
thank you very much
Grate info but i thought the whole point of cobs was not having to run a driver ?????? Iv just orderd some cobs and ir bords i bought a driver for the ir but not the cobs pls help mr mouse ...🤟👍👍👍👍👍👍👍🌴💨💨💨💨💨🤙🤙🤙🤙💯%grate info
Or you can use a driver that regulates.. Pretty much any computer power supply for example. I can hook up a 12v1000ma led to a 12v13,000ma channel and... ~900ma flows through
Also 2x12v LEDs in series makes for 24vf
Brawo some one explain exactly what ist what brawo
dat ist fizyks from school hhaaa BIG 5 FROM POLAND
(fv)(i)=w (36v)(1.4ma)=50.4w not 56w. correct me if I'm wrong please. same with the 72v x .7ma=50.4. great in depth videos, keep up the great work. could you send me the exact parts list of the light bar that you made in this video. also, correct me if I'm wrong but would i have to make 2 seperate light bars, 1 for veg @5000k and 1 for flower @3000k or what would you recommend?
Hi growmau5. Just wonder if you could address some of these criticisms of COB LEDs. It's taken from the Spectrum King website. Thanks.
C.O.B Myth
There are only three reasons to choose a C.O.B. LED:
Reduce the cost of materials to make the LED
Save money by eliminating the need for circuit boards
Group more LED diodes into one small area
Standard self-contained diodes are the leading LEDs in the industry and have performances that are double that of C.O.B. LEDs. Every LED that claims to be 10, 20, 50 or even 100 watts is a C.O.B.
C.O.B. lights offer lower efficiency and overall light output. By adding and cramming more diodes into a tight array that share the same substrate, heat becomes a big issue. As the C.O.B.’s run hotter, they:
Emit fewer lumens
Have a lower efficiency
Develop a shorter lifespan
Damn bro, stop growing and start teaching. I am a dummy from the south, and I can understand this. I just dabble in electronics. I want to build a light, but I was so confused on the driver numbers (voltage and mA), and how many COB'S could be ran with a single driver. I had like 10 "oh shit" moments in like 2 mins, lol. I gotta replay this a couple of times and I will watch all the parts. I gotta finish the video, lol. DUDE GROWS!!!!!
how far are we away from the next advancement?200 lumens per watt and beyond.? and will someone be producing a system to match the latest white led.? will it be a mix of different colour temps or just a couple like 3k and 4k.? i would buy a 12x36 inch panel today if i could source one.maybe a program dimmable one like medgrowers.i would include a wider variety of whites possibly ranging from 3k to 7k.PLEASE MAKE A COMMERCIAL VERSION.white led rocks.i think they can out perform a de hps but not sure it makes a difference during flower as i believe the hard work is done in veg.id love a consistent led light source if it did the whole job.you are proof it works..how come more people aint producing them commercially.?
Hello, I have a question about drivers and cobs. Lets say I am running 4 citizen clu48 1212 on a hlg-240h-c1750. It has a output voltage of 143 however, the cobs require 144. will the driver fail me, or is there a margin on these things?
if a COB says 36V, how do we know it's actually 34-35? If we went strictly based on the numbers, we'd have to assume it can only fit 3, so how are we supposed to know that it can actually fit 4? Also, based on the LED efficiency droop, which says as current increases efficiency decreases, wouldn't the 72V COBs run at 700mA be more efficient than the 36V COBs run at 1400mA? Is there any advantage to parallel wiring if we did want to go with the advanced method and use fuses / resistors /etc?
If you dont mind me asking, Im building for a 4v4 grow room and was going to use 10 bxeb-l1120z-35e4000-c-b3 for even light distribution. My question is what are the advantages of using a COB vs a light similar to this?
Do you have any of those light bars for sale?I have 8 vero29 cobs and some mean well drivers but I'm not sure if they will pair. I have Lpc-100-2100 for a single cob build and hlg-150h-36b to run 2-3 cobs per panel.
Any advantage of wiring series/parallel..?? Each pair wired separably in a series, then the two series wired parallel to the driver... Would this give more flexibility in choosing drivers or amount of LED's run on one driver..?? Brain knot..??
GrowMau5 brotha I'm a huge fan and one of the few that know wut u speak on is generally the right way, I've got a issue ,I've ordered a couple of the cheap 100w drivers and hooked up to my QBs,all I'm getting is a blink ON blink OFF, unlike the mw hlg 120h 54a it makes the qb panels work rite ,did I just buy drivers that only work for cobs?? It reads qd-100w Ac 85-265v
DC 27-38v
DC 3000ma
Ip65 thanks so much bro
I check out cree website looking at dios, Fv 11.5 at 350mA, max mA 1050mA. how do I precisely find out Fv if I want 1000mA running on that diote. it would no longer be 11.5
hey man I love your videos!!! I am just a bit confused and dont want to F*** it up so I just wanted to ask. I have 3 50 watt full spectrum led cobs. My friend gave me this driver that is 12v 12.5a 150w output which I think will blow my leds? Am I right? What do you recommend?
a common tent size in the eu is a 1mx1m and the cobs should replace the 600w hps I see most people use in this set up. my guess is 2x 4 3590 1400ma 200w (total 8x 3590 =400w led)
maybe in 3-2-3 placement with the passive pin-heatsinks,in combination of warm and cool spectrum and extended cord so the drives can be mounted outside of the room
If possible with the 80/20 Mounting rail instead of the L shaped alu
Holy shit, I went blind about half way through that! I know a little about electricity and dick about LED's. Been growing off&on for a decade and would love to learn enough to diy my self some supplemental LED's for my 6k Gavitas room. You suggest any books to get me up to speed? Enjoy the video and your step by step. Your channel is needed for the growing community, thank you 👍🏼
Hey bud, thank you for the great videos. one thing you didn't explain, which I'm a bit confused about it the ma relation to v. I watched and tried to follow on of your first videos and purchased the Meanwell HLG185h-c500b with the cxb2530's. I tried to place just one LED on the driver, which worked for a while but then when I turned it off it didn't want to turn back on and then suddenly blew the LED. Is this a problem with over driving the LED?
That driver only has a ma of 500 instead of what you were suggesting of 1400? but has a lot more volage output. Can you explain why you went this way on the older video? and how can I understand how many I can put on the driver? I would prefer to not blow any more COB's if I can help it :)
Love it man. I have to admit I was yelling at you about thermal runaway until you mentioned resisters, lol. I was yelling about resisters and fuses and circuit breakers, lol.
I'm a LED noob but have a solid background, expect questions from myself and probably my son as well. Keep makin the vids man. PEACE and keep growin, I know I will.
what up!! nice channel! im also interested in a 4x4 setup tutorial for noobz.. I would like to know what parts are needed and where can you find them. also can you explain how many lumens does a 400w or a 600w HPS PUTS OUT verse the DIY setup you talk about... stay green!
i have an 8x8 greenhouse, but I want to be able once the sun isn't promoting adequate photosynthesis to run some LED's to complete the 18/6 cycle. Using what I can from the sun for those wavelengths that NO artificial light can reproduce, however it is almost September so I'm switching the lights on at 1815 and cutting them off at around 0015. I have to check what time sunrise is but you get it..
I HAVE A QUESTION FOR A BUILD THAT A LOT OF "DIY PEOPLE" MIGHT ALSO BE HAVING.
*** EVERYONE PLEASE FEEL FREE TO POST ANY ANSWERS, HELPFUL INFO.
SO MY QUESTION IS ABOUT WHEN USING THOSE "SMART COBS" (THOSE DIY LEDS THAT EACH HAVE IT'S OWN DRIVER BUILT IN TO THE COB ITSELF SO NO SEPERATE DRIVER IS REQUIRED) THEY COME IN DIFFERENT TYPES LIKE- PUSH WIRE CONNECTIONS OR SOLDER STYLE, & ALSO EITHER 120V OR 220V, & ALSO CHOICE OF DIFFERENT SPECTRUMS.
SO I AM USING THE 120 VOLT (I'M IN USA) "PUSH-IN-WIRE" TYPE, I HAVE A FEW "FULL SPECTRUMS" & A FEW "WHITES"(I FORGET SPECIFIC COLOR TEMP, THIS DOESN'T EFFECT WIRING AT ALL)
****--WHEN WIRING MULTIPLE ONES TOGETHER CAN I JUST WIRE THESE IN "SERIE'S" AS USUAL? OR ***DOES IT CHANGE ANYTHING BECAUSE OF EACH COB HAVING IT'S OWN LITTLE PERSONAL, INDIVIDUAL DRIVER, ETC?
***ALSO HOW MANY TOTAL CAN BE SAFELY WIRED TOGETHER ALL ON THE SAME SINGLE PLUG?
THANK YOU FOR ALL ANSWER'S, REPLYS, & HELP!!!
I have a 4x8 tent with a 8 site DWC bucket system and want to make a cxb3590.... where can I find a list of everything I need? I want a 4 cob light bar ... I would love for u to do the whole go through the sites n price everything out for this build... I was thinking having 2-4 light bars in my 4x8 tent with 4 cob cxb3590's per bar.. how my 3 tent system works there r times there 16 buckets in bud tent n times only 8 so say turn 2 on when 8 and all 4 on when 16... please help I don't wanna buy mars pos
ok so i have 4 luxeon deep red 1 up leds per strand/light a 3w/700ma each totalling 12w of draw per light fixture x2 so a total of 24w at 700ma,
ill be using a mean well APC-35-700 too run 2 fixtures/separate strands with 4 leds each my question is will it be a problem if i solder the positive/negative wires from both lights/strands together & then solder these to the single positive/negative wires coming off the driver ?
will this work ? or am i better off going with 1 driver per light ..
thanks in advance much appreciated.
great work has clarified a lot on diy leds.
This may not be the place to ask this, but it's where I am when thinking of it, so here goes: Can a COB span over a t-slot in a heatsink, such as the one found here: www.heatsinkusa.com/8-460-led-t-slots/ ? I understand all about thermal pastes, pads, etc., I'm just wondering about having a 1/8" "channel" through the middle of the COB that isn't as well sinked as the rest of it is. Using a pad, vs. paste or epoxy, would at least allow for some sinking, I suppose, so that's probably the best approach, should it prove viable. What are your thoughts? Oh... and thanks for taking the time to make these vids. Takes me back to my electronics schooling (which began before the days of integrated circuits... and yes, I've actually used a rotary dial phone.) ;-)
Why I can't make amount in series and turn them streigh to 220v?
I mean if I want to turn 800w Led a Led driver will be same price of Led... What can I make to get alternative for Led driver?
Thanks for the teaching 😊
I'm new to the scene and just like any noob I'm eager. so eager I went out and bought myself three cxa2530 and a mean well CLG-150-36A driver. the mistake that I made is that these components are not compatible. the next mistake wiring the first light in parallel to my driver then connecting the next two lights in series with that light(pop). does anybody have any suggestions what I can run on this CLG-150 - 36a (constant current 4.2a) three lights in series this time. by the great video
Mr. Growmau5? Why is video 3/7 listed as private in this playlist/series? Please to be fixing for happy grow! I keep recommending this playlist to noobs :) thanx for all you do sir!
Man, I don't really get your explanation of cob as eggs and the MeanWell driver as the egg box... I find it kind of confusing.
Even wiki says "Strings of multiple LEDs are normally connected in series. In one configuration, the source voltage must be greater than or equal to the sum of the individual LED voltages."
So I can only agree with your reasonning but I still don't get it, could you explain to me which law is behind that please ?
Great stuff! Explained very well. Progress us noobs into intermediates. COB LEDs are the future, learn up friends.
If a Cob can only handle 2.8 Amps what is the safe zone to push it when selecting a driver. I see you were saying 1.4 But If I want Brighter Lights a little bit warmer but still safe to operate would be ideal is 2 Amps Safe? In a 4-5 Cob Settup?
I am working on doing vertical grow towers and have not been able to find a light good for that. Especially LED(the ole school hanging HPS aside) Now I can make my own custom corn cob style kine LED where I can set 3 channels, One for bottom light on when I have the seedling in the center, one for back half light on,(for when the system is closed in the circle configuration) or for just front half on, for when I'm running the system open configuration. (like I am not due to space restrictions)
Hey, I like what you are doing. But you should explain the difference between constant current and constant voltage drivers. Because the problem you describe with LEDs in parallel would only happen with a constant current driver. With a constant voltage driver each LED works independently of each other. So, one burning out doesn't kill the others.
Wow this is excellent!! I want to build one!! I discovered Greengenes Garden's channel a few months ago and learned a lot from his diy cob led build. YOu probably know him. You really explain it well. What I would like to know is where you get all the components? Any source info would be great.
What if the total forward voltage of the LEDs are lower than the drivers voltage is ? Say 9LEDs*12V = 108Vbut the LED driver is 148V. Do I have to have the exact voltage from the driver to match the fV ?
I am looking for this answer myself did you find out?
i WAS WATCHING in one of your vidios that was for new people. it was about 1.5 hrs
you had wookie as your producer and another guy asking questions great vidio but I can not find it
you were also answering questions from chat please point me in the correct direction
Bro, i need help! Any way i can talk directly to you would be great. I get its not brain surgery just stuck and really want to not be stuck. Obviously bc of efficiency and overall quality. My trouble seems to be matching cob or cobs with capable driver.
Maybe I'm asking completely bullshit right now because I don't know anything, but why are light bulbs just light bulbs and with LEDs you have to cool it and all this stuff?
Just what I’ve been looking for... great stuff. As a noob, thanks and please keep it coming 😃👍🏻
Just as a hypothetical, could one use two hlg-185h-c1400's in parallel to achieve 2800mA for four 4 cxb3590 cobs assuming there is enough heatsinking? I looked at supras charts for cob driver matches and I was trying to find a good match for running the cobs harder. Thinking it'd be awesome if the drivers will work fine in parallel. You are the fucking man for these videos!
HI that's is awsome for a Noob like me. Thanks to you i get little bit knowledge more. But i have one problem i will make my cob lamp set for garden 0.6 cm for 0.4 cm that size is not standard i think to use two cxb3070 runing at 1400ma if that is enought for that tent ? if i can do somethig better?
Not sure if it's been asked, is there any advantage to parallel wiring over series, or vice versa? Or is it just a different way to wire when having a different driver?
I am looking replace my 600 watt hps with something a little more efficient, but wanna rock the house.. as you say.
My grow area is a 6.5 ft x 13.5 ft room but use two nets that are about 4 ft square. So really it can be just about any size coverage.
I enjoy your channel and it helps a noob like me. I think I have the basics pretty much down thanks to you.
Just found your videos, most helpful info I have found so far! I have a quick question. If you are still around. I'm interested in using cobs, ir, uv, also some colors. Difficult?
you've made me want ton convert I've been looking at cobs why isn't anyone use cxa3590s they seem to be the biggest. If you wanted to run let's say 10 of the cxa3590s what drivers would you use how many to a driver I'm a medical patient for epilepsy so every penny saved on power is a blessing.
Im building leds for a 300 Sq ft flowering canopy in a connex box. id love to talk with you more about building leds
Ok, so here's a real back to basics question. In the beginning you talk about having a 'hot' wire on your AC current side. I thought the whole point of alternating current was that you don't have a 'hot' wire (or common wire, for that matter). What am I missing? Thanks.
Bro I know you probably make a buck off of viewership and whatnot, but I really want to give you some props for putting so much effort into informing people like me. I should also mention that the new "first video" did actually help me understand what I'm sure would have seemed a much more heady video had I watched this first instead. Thanks.
Interested in doing a diy cob kit for a 4x12 table, I've looked at fluence spyders and doing 3 of those but this definitely has my attention, what would you do on a 4'x12' table ?
Ima put this out in this forum because I think I can get the best knowledge from a channel and viewers like this. I'm getting started with small lighting using Solar. I have to consider the amount of watts output because it's a bit of a charging thing also on the other end with the solar panel. CREE T6 LED Chip
I'm curious how well 4-cxb3590 at 3500k with meanwell hlg240 1400 will be enough light to flower in a 2x5 area?
thank a mill...they seem identical because they both say they constant current. however the one you linked is the one...glad i waited for your guidance...phew!
Hi, if i have a driver constant current of 76v and 3amps and pair 2 leds of 38v both of 3amps will work right but if one demage another will burn too to have to work alone with 78v?
thanks this video has my foot in the door. I am a straight noob and am starting from scratch and am hoping to have a well rounded knowledge of building LED's and matching parts with ease so with in a year I can design my own lights. I also need to get familiar with the extrusions and the bolts you use and do I cut the extrusions my self to size?
Thanks,
Hey Growmau5, been trying to figure out how to get in contact with you. Long story short you got me into growing and I just got VC funding to start rec facilities. I really think you should hit me up when you get a chance. Would love to do some business with you. This is all legal and we could easily create an insane amount of youtube content.
I would be interested in components for a 10' x 15' flower room, would like to replace all my hps fixtures. thanks!
Hey Man, First i just wanna say thx for taking the time to make this series to helps us noobs out. I was hoping i could use my old computer power supply to power the COBs/fans instead of buying one of those mean wells. Is that possible? Ive been searching for anything like it online and haven't had much luck. any help would be greatly appreciated :D
I have a 4x8 canopy I would like to cover. Any recommendations for a diy that will compete with the new spydr lights?
this LED are for grow or flowering???
What is better LED to grow and to flowering??? what about full spectrum led?? ROOM 2x2 is good ideia put 4 LEDwhite and 1 Full spectrum???could you help me please?
This is what iv been thinking since iv been watched growmau5 videos