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$1.5 price is just for me as we're long time friends, besides this is old stock just sitting in the warehouse only sporadically being sold for around $9 each. If you are interested in some, message me and I will check if I can make a deal for you. I can pick them up myself and ship them, the...

thanks my man. btw. can you or someone else tell me if a "heavier" heatsink is most likely a better one since it will absorb more heat?

thanks for your replies, I'm learning a lot from them. The problem is however that I can not buy 1 at that price from this company. I can buy a minimum of 40 @ $1.5 each (overstock). Besides, I can't return them. To make it even harder: I can only get this insane bargain today because the guy I...

My concern is that from my perspective there is a difference between the constant heat generated by a cob vs the heat generated by a cpu (which these are made for). Since a CPU do you think it's possible to run these cob's at 1400/50w each on a heatsink as I mentioned? it's not like I can't...

would it technically need airflow if the winter ambient temperature is really low?

Hi there, I'm about to buy 20 more heatsinks to cool the 20 citizen cobs (1212) running at 50W each. I have a really cheap option picked out, but I'm not sure if it would do the trickto cool 50W constant so I would appreciate your help! Option: Spire Coolreef II $1.50 per unit The...

@CobKits what kind of on-off switch can connect 10 of these drivers to it? Should I check for maximum amps etc?

Dipping the switches on 40 drivers, yes technically I could..but I think I will prefer to toggle half the cob's with an on-off switch :-P What would you wire in series and what would you wire paralel on this set-up? I have 1.5mm flexible cable wire, will that do btw?

Makes perfect sense! I will go this route, and build a switch on 50% of the lights. The 20 cobs will light a little over 1m2, so thats easily manageable with 10 cob's too. I'm not yet sure tho if im gonna need this dimming feature yet as I had the idea to just SKIP veg, go straight into BLOOM...

Thanks for your anwsers! I tried to google it, but could not find anything at all about this driver and how it's connected. Any good source where I can get my anwsers from regarding the dimming of the fans and cob-power? I watched @Growmau5 video's, but couldn't find my anwser there. Any...

Good evening fellas, So I've got the all the materials I ordered, 40x 12vdc fan heatsinks 40x 1212 Cob's 40x power supply (1 per cob) Questions: Basically what I wanted is to run these cobs at 1400mA (which will be 55W according to the table on the driver), is this the best option too in...

hmm 150cm grow limit. Sea ofGgreen for sure. I would do 1 cob per plant, at least that is my own plan. I'm currently building a 20 cob fixture and will run 1 cob per net-pot, so 20 cob's total in a SoG. Only difference between you and me will be that I'm running in hydro instead of soil.

well, tobacco is smoked, like weed, so thats where I draw the line between nasty chemical and not chemical. It's probably more of an personal opinion ;) The Tobacco I use looks like this: https://i.ytimg.com/vi/T8Hzv2SFVck/maxresdefault.jpg The Garlic I squish with a garlic press. The amount...

I would agree. Building a COB fixture has never been easier with todays youtube videos and forums. There is enough knowledge available here and people here are willing to solve any issue you might face building your fixture. I'm not sure but there also might be people on here who will build the...

this made me chuckle :bigjoint: @ OP: I had to google image search, turns out spider mites is what we call "spint" here. And I would never chop down my forrest because of them little critters. There are a lot of ways, even without chemicals to get rid of them, as you probably already found out...

1200w only got you 140 grams ?? I googled 5 oz in grams and it said its 140 grams ?

nice :D

I feel you, but for me personally there is also that optical / design factor what's important to me. CNC/3D printing/designing is a hobby, as well as growing plants, so I combine them and take my time untill I'm satisfied with the result. A frame could basically be made from pieces of scrap...

Any 3d printer can do that, even if the build plate is not big enough. There is software available with a so called "slicer" function, which cuts up a design into pieces which fit on the build plate. You'll need good glue tho ;) I've printed a big part like this in ABS filament. ABS filament...

I dont know mate, I think alot also depends on the type of aluminium used for the cast. This will be an experiment, might work - might not:)