Advice please - 12v or 36v led drivers for diy cob build

Cheers guys, especially diyled.

Driver and light strips ordered. Can't wait to get building !!

Happy growing.

Driver and lights arrived today. One happy grower !!

Should I buy 20mm double sided thermal sticky tape, or the full 40mm? It's for 50 metres, so I could easily double up, and save £6 if ok.

Or would you recommend a single 40mm tape, and just pay a little extra?

Cheers.

Yea just double it , i do.

Good luck with the build/grow.

Northernpop said:

Hi Guys,

I'm trying to build a cob grow system for my small grow room, but I'm financially embarrassed.

It's only 2 x 3ft in size, so I was looking at something around the 200-300w range.

With this in mind, could I build a cheap diy cob system with 12v drivers and chips, or do I need to stick to 36v DC ?

Many thanks, as always.

Happy growing !!

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I spent under 100 on this. Maxs out at 435 wall watts. 36 12v 10 watt 3500k led chips.
Running em about 310 watts right now. Been using it for almost a year now. Blueberry Twist Jackie white

Rolla J said:

I spent under 100 on this. Maxs out at 435 wall watts. 36 12v 10 watt 3500k led chips.
Running em about 310 watts right now. Been using it for almost a year now. Blueberry Twist View attachment 4117550 Jackie whiteView attachment 4117558

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Wow, if mine's half as good I'll be happy !! I've just flipped C99 x Blueberry a week ago.

Cheers diyled, can't wait to start building. Think I'll stick some mini heatsinks on the back of the aluminium u frame. They are 20x20mm and only cost £2 per 5. Surely they'll help to remove more heat.

Will these help ?

Cheers.

i get more impressed with cobs every crop..
i can get so close without reflector /lenses .yes broken record..but the buds inspire my words

OLD MOTHER SATIVA said:

i get more impressed with cobs every crop..
i can get so close without reflector /lenses .yes broken record..but the buds inspire my words

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Are you still using the boards?

yes 95% ..i love em..i love these

Northernpop said:

Wow, if mine's half as good I'll be happy !! I've just flipped C99 x Blueberry a week ago.

Cheers diyled, can't wait to start building. Think I'll stick some mini heatsinks on the back of the aluminium u frame. They are 20x20mm and only cost £2 per 5. Surely they'll help to remove more heat.

Will these help ?

Cheers. View attachment 4117591

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Can paste the u channels side to side imagine putting 8, 2" together. That'd look pretty cool

Northernpop said:

Wow, if mine's half as good I'll be happy !! I've just flipped C99 x Blueberry a week ago.

Cheers diyled, can't wait to start building. Think I'll stick some mini heatsinks on the back of the aluminium u frame. They are 20x20mm and only cost £2 per 5. Surely they'll help to remove more heat.

Will these help ?

Cheers. View attachment 4117591

Click to expand...

I wouldnt bother really if you want to increase surface area you can put a smaller piece of u channel inside the bigger piece but its not needed.

40mm-50mm wide and 20-25mm high U profile is more than enough for the build.

Hi guys,

Well everything's bought for the led build, so I'll keep you updated.

Just thought I'd give you an update on my C99 x Blueberry. Two weeks into flower.Really stretch. Can tell the lights ain't up to the job though.

Happy growing.

Good luck with your build dude, If you have some minor question i can always answer a few, you will be addicted once you build your light.

i built this last week for a really small area.

Cheers mattish!

Hey guys, will this wiring (parallel?) layout work please?

Cheers. I'm still going to fully read up first. Just thought a heads up would help.

Happy growing.

Northernpop said:

Hey guys, will this wiring (parallel?) layout work please?

Cheers. I'm still going to fully read up first. Just thought a heads up would help.

Happy growing.

View attachment 4125760

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Yes, that should work.

nfhiggs said:

Yes, that should work.

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Cheers nfhiggs.

I think I've stupidly snapped a clip over one of the terminals (see picture).

Please can anyone reassure me that I can use two of the 4 ports to connect the cables to ? There's con1, con2, con3, and con4. I assume I can use just one positive connector, and one negative connector.

Cheers guys.

Apart from that, I'm well on the way to a build. I'll post the build, when complete.

Happy growing !

Yea just use the connectors at the other end .

Cheers again diyled. Ok, would this wiring configuration work ok please? I've bought 4 strips though.

Northernpop said:

Cheers again diyled. Ok, would this wiring configuration work ok please? I've bought 4 strips though.

View attachment 4128418

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Of course! All wiring examples of LEDgardener work. But if you use 4 stripes at 1.4A, you have to choose a driver that can deliver at least 192v(4x48v). That means you need an HLG-320H-C1400B with 4 DR strips(~270w). I would rather take the CV/CC version with 48v for parallel wiring. This way you can add more strips later and you could use a smaller driver like an HLG-240H-48A for around 250w or an HLG-150H-48A for 150w.
You can also hang more strips in series to a CC driver, you should only pay attention to the 300v limit of the on-board connectors. If you lie over it, you should solder them.

Did you get the 48a/b ? If so you need to wire in parallel as your 1st drawing.