DIY COB LED build - 6 Cree CXB3070 220W

[Caconym]

Big box full of bits and bobs mostly heatsinks and things to hang the COBs with and electrical fittings.

 

[Caconym]

Removed the factory thermal grease and mounting brackets from the PC heatsinks. Gone from this:

To this:

If you were using these coolers you could mount them directly onto a frame with the screws for the brackets. I'm planning to hang them individually for flexibility.

Close-up on the screw.

 

[I like Cheese]

Looks cool. Are you going to tap the holes in the heat sinks or use self tapper. Or tape ?

 

[Caconym]

I'm going to drill and tap the heatsinks for M3 machine screws figured it'd be more precise than self-tappers in ali.

 

[Caconym]

Added 4 eyelets to each heatsink to hang them from.

 

[I like Cheese]

I was also going to tap,but after I broke my second tap on the fourth hole I decided to drill 2.5.mm holes and use 2.9 screws. Worked well though.

 

[Caconym]

I will bear that in mind for a backup plan. Were you tapping with a drill or by hand?

 

[I like Cheese]

I used a drill, or tried to.lol

 

[Caconym]

Right-o I'll stick with hand-tapping then.

 

[Caconym]

Update on the build:
Started wiring things together today.

Put a plug on my driver with a socket for the heatsink fan power supply in-line so the whole lighting system will run off one socket and timer.

Wired up 6 lengths of flex in series to run between the driver and the COBs.

Couldn't help sneaking a peek at the chips.

Need to start drilling and tapping heatsinks but I'm putting it off because I know it's going to require a lot of patience and precision.

 

[Caconym]

Did a quick sketch to show how I've wired the leads for the COBs:

Please excuse the ridiculous proportions

 

[MrMango]

Hey Caconym subbing up here, very interested in DIY cob builds as part of my next grow. Excited to see how these turn out for you!

Mind if I ask what your costs ran to?

 

[Caconym]

I think it'll be just over £400 ($520 US) by the time I'm done with customs fees, having to buy tools and not shopping around to get some of the smaller parts cheaper. I'm pretty sure I could have saved a decent chunk but I'm impatient and fairly well off at the moment.

 

[I like Cheese]

Hi Caconym. Sorry m8 but I just can't see where you are going from your drawing. I will just wait until you start the real thing. Where did you buy the parts ? Pm me the answer.

 

[Caconym]

Wired up 6 lengths of flex in series to run between the driver and the COBs.

It's a really really bad drawing of this.

 

[Justwannagrow]

It looks like you got everything from one Place? Where did you get everything from? And what country are you in I've never seen a plug like that before

 

[Caconym]

Hi Justwannagrow, I got my COBs, driver and holders online from a well-known electronics supplier. I'm not willing to give out my location (even though you could work it out from the plug if you'd seen one before...). Sorry

 

[MrMango]

Cheers for the estimate Caconym!
Plug type is something I'm very familiar with .

 

[Justwannagrow]

Yeah I could really careless about your location that was just curriosty lol more if where you got everything from one place as everywhere I've looked you have to get different parts at different places with the exception of cobkits and rapid which are kinda over priced. No big deal either way

 

[I like Cheese]

Yeah I could really careless about your location that was just curriosty lol more if where you got everything from one place as everywhere I've looked you have to get different parts at different places with the exception of cobkits and rapid which are kinda over priced. No big deal either way

If you live in Europe cheap cobs and the bits to go with them are as rare as rocking horse shit. You have to bite the bullet and pay what you have to.