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any pictures?

Greetings Good People of RIU, Has anybody tried one of those so called DIY CO2 generator designed for fish tanks? The concept is basic and sound, get a steady flow of citric acid dripping on baking soda hence producing CO2. However, I have no idea of how accurate this thing can be. Costs about...

there you go kind sir...

You are absolutely right Mellodrama, and I like the fact that you want to be precise semantically. It avoids confusions and misunderstandings. But, with my very limited knowledge of LEDs I have to say I have never seen any LED like these. All I can hope for is that high end manufacturer use this...

Mellodrama the driver is on the actual cob so it turns the ac in dc without needing additional equipment. I find the idea really appealing. It will enable the DIYers to make much more elegant designs once the technology is satisfactory. IMHO it is the way of the future unless the cob drivers are...

Awsome trial KMN! and thanks for sharing your experience. how long did you veg?

Hi all, browsing an infamous asian online marketplace I came across driverless cob that you plug in the wall directly. Obviously with some sort of heatsink. has anyone ever tried them with MJ? I ordered one jsut to get a sens of how they work. Will let you know when I'll receive it. Having said...

great idea!

Ok, I moved on from the oscillating fan. I am thinking of a system based on a threaded rod and a motor. I need a stepper motor as I do not want the light to move back and forth too quickly. I am struggling with the motor controller. anyone arduino savy in here? this is very low cost and sturdy...

I don't know and I am soooo annoyed that I can not disassemble it before 4weeks... It's killing me

Yeah that much I understand. Can not go to the shop as it is king brite...

It goes for 68usd in cutter...

Thanks for your input. And sorry for the lack of pictures. I finished up the build in a rush as I will be away from my workshop for the better part of this month. My electricity knowledge is very limited and I do not understand how the first two cobs lit up if there is no "loop" in the circuit...

I wish I could, I have no access to a compressor except my lungs...

No cob holders unfortunately, straight solder job. cobs are wired in series. I am using a Mean Well ELG-150-C500B 500ma and 150W maxi (using about 92 out of the wall). running the cobs extremely low as I want minimum heat.

But if it was a wiring plb would the first 2 cob turn on? they are mounted in series

Hello ladies and gents. I completed my first two diy led. Each one with 5 Cree 2350 running at 500ma. I need low temperature. They are mounted on a heatsink 400x150x27mm with two (very noisy) fans each The first light is running perfect. It is for veg with 2x4000k and 3x5000k no worries. The...

OK I GOT MY FIRST VEG LIGHT AND FLOWERING LIGHT BUILT!!! I am sooooooo excited. (and proud) will post pix soon. Where do you stqnd Shiva?

here is the genius you mentionned. simply great imho

Hello Growmau5. I am gonna build a veg light for a roughly 3sqft area. I will use 5 cxa2530 and a MW driver ELG-150-C500B. any suggestion on what color I should use? I will only use it for veg I am building another similar one with 3500K or 3000K depending on what jerry can get a hold of. Thanks