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Please Help - Cheap Diy Cob Build For Small Grow (3x2ft)

  • Thread starter Thread starter Northernpop
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Please Help - Cheap Diy Cob Build For Small Grow (3x2ft)

Northernpop 35 Replies 7,057 Views
Page 2 of 2 · Replies 21–36 of 36
#21
This light cost me $200 to build... $130 if you take off the wifi equipment. 220w of led.

2018 01 18 215712
2018 01 17 095718
2018 01 17 091310
2018 01 19 184044
 
#22
Cheers pal. That looks sweet !!

I've found this kit, and I'm probably going to have them shipped from USA, as that seems to be the cheapest way.

Happy growing.
 

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#23
#24
Sorry Toaster. I didn't download the app first. That's great. Many thanks pal !!

I've sent them a request, and look forward to hearing from them. This link is much cheaper.

Peace out.
 
#25
Northernpop said:
Sorry Toaster. I didn't download the app first. That's great. Many thanks pal !!

I've sent them a request, and look forward to hearing from them. This link is much cheaper.

Peace out.
Click to expand...

No biggie. Kingbrite is a reliable and reputable dealer. They'll also make sure you get a separate receipt so customs don't rob you.
 
#26
Toaster79 said:
No biggie. Kingbrite is a reliable and reputable dealer. They'll also make sure you get a separate receipt so customs don't rob you.
Click to expand...

Do I need to do anything regarding receipts and customs, or would Kingbrite sort that? I assume it will be secure too.

Cheers again, awesome !!
 
#27
Been chatting to Nancy at kingbrite, and she's sorted a list of kits. Very cheap too, compared to UK (no shock there). 5 cobs with a MW HLG-240H-C1400B. Glass covers too.

Thanks for the help everyone. I wouldn't have had a clue.

Peace out !!
 
#28
Must thank you guys again, BombBP and Toaster79.

I think this will be sweet for a 2x3ft grow, and all for $183.50 !!

250W CLU048 1212 diy cob led grow light kit
This kit contains the following components:
5pcs of Original Citizen CLU048 1212 3500K 80CRI cob
5pcs of thermal tape
5pcs of Ideal holder 50-2204CT
5pcs of Ideal 50-2100AN
5pcs of KingBrite Reflector KB-D82-90RF
5pcs of Pre-drilled Passive heatsink Φ133*H70mm(for 55-65W)
5pcs of Wago quick connectors
1pcs of Original MW driver HLG-240H-C1400B
1pcs of TOCOS (soldered) 100K linear potentiometer
Cables + Screws

Happy growing.
 

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#31
The 1400 number means it will provide constant current at up to 1.4 amps. The 240 means 240 watts (actually specd at 250w)....more than enough to drive the five lights. Looks like since this is most likely wired in series each cob will see 1.4amps at ~36v per cob.
 
#32
Northernpop said:
Can a single C1400B driver run 5 cobs?
Click to expand...

Check datasheet for citizens, lookup or calculate the forward voltage at given current at 50°C then multiply that forward voltage with 5 and have a look at meanwell datasheet to see what is the maximum output voltage. Depending on the junction temperature of the COB, the voltage will eventually stabilize and so will the current. You might not get the whole 1400mA but pretty close.
 
#33
With 179V max on the output of the driver

Screenshot 20180124 004117

each COB will see 35.8V. Datasheet for the citis says 34.6V @1080mA @25°c typical.

Screenshot 20180124 004009


Take some heat in account and the Vf will drop enough to get the full 1400mA

Screenshot 20180124 003710
 
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