Milad's 72in LED build

Milad · #1 12-10-2010, 05:33 AM

mseepman,
nice find on the soldering but im going to stick with the first one you found. dont really need the holder and glasses considering ill be soldering when all the stars are bolted to the heatsinks.

roblarss,
its a tough call. whats frustrating me is that cdiweb.com has them for half the price futureelectronics sells them for and $40 cheaper than wattsupply.com BUT cdiweb.com doesnt keep them in stock and the guy was rude. so i could take my chances with wattsupply out of the US and hope I dont get dinged at the border or use futureelectronics.... decisions decisions.

thats something like 20 LEDs i could buy if CDIweb had them.

did i just start using LEDs as monetary unit? WTF

Milad · #2 12-13-2010, 11:37 PM

so, it looks like im not going with the big aluminium heatsink design for two reasons
1. it gets heavy fast and is hard to hang
2. shipping gets expensive really fast ($150 for one 10x20 heatsink!!! to my house)

so, instead, ive following some advice of the larger builds and i think im going with aluminium u channel with small CPU heatsinks + fans attached (around 12). Once i narrow down how im going to do this, ill post some more models.

roblarss · #3 12-14-2010, 11:02 AM

I ended up making my own heatsink also as the shipping costs were crazy. I used a 1/4" aluminum plate and the fins are 1/8" aluminum angle. I just used some heatsink compound between the 2 pieces and riveted the angle to the plate. Made it nice as all the leds are on the plate and can go exactly where I want them. I then have 2 12v computer fans on top of each module. Havent had any problems yet.
With channel you can probably just mount the stars to the bottom face and then connect all the channel together on the ends. You just need to make sure you have plenty of heat dissipation for the heat. Mine starts to warm up slightly when I turn the fans off. Going to put a high temperature cutout on it soon..

monocus · #4 12-14-2010, 01:56 PM

to hang your heatsink-go to grandview rona in the specialty bolt section,and get bolts with a hole drilled at the end of the thread(or there are other bolts that you can use)drill a hole in your heatsink to fit your threaded shaft,and drill a larger hole over it to fit the head of the bolt.if you need to you can come over and use my drill press

KevinK · #5 12-14-2010, 04:17 PM

any link's ore pictures of DIY heat sink

at this time I stil have 4 left (6x10), however would need more, and are wondering what would be best, as now my unit is nice 6x 24 with 28 LED and first had in mind to make all units like this

maybe one big one

other alternative is to use 1 ore 1.5 inch square aluminium pipe, mont them on there and blow air in the pipe, you can even derect this air out of the room!

Bblinks · #6 12-28-2010, 10:33 PM

TAGGING ALONG.

mseepman · #7 01-10-2011, 12:30 AM

This is funny...today I saw a thread on RC asking about this build and why it had been deleted off of RC. I had heard that you had been banned Milad but what I didn`t realize was that by posting on that thread where they were asking about you, I would get penalized myself.

Talk about Tyranny. So glad Canreef is not like that.

GMGQ · #8 01-19-2011, 07:19 AM

FYI, you can ship stuff to a place in Point Roberts, WA, and just drive over there to pick it up and bring it back yourself. The US border guards there know that's what you go there for, so they just ask you straight up "what are you picking up?" Then when you come back, just be honest, and you may not get dinged. I ship stuff there all the time, and havent been dinged (knock on wood!).

This is one of the places I use:
http://www.thelettercarrier.com/

You basically register on their website, then mail stuff there under your own name, but use their address. When your package arrives, they'll either email you or give you a call, and you go pick it up (just bring photo ID). It costs $3-4US per package to use their service (price depending on the weight of each package).

From Burnaby to Point Roberts takes like 30minutes.

You save a LOT of money over 'international' shipping from the states. There's a place in Blaine, WA that does this too, but they just started charging a one time annual fee now in 2011.

And you wont have to deal with brokerage fees from UPS :P

Just another option for you to consider

Quote:

Originally Posted by Milad

roblarss,
its a tough call. whats frustrating me is that cdiweb.com has them for half the price futureelectronics sells them for and $40 cheaper than wattsupply.com BUT cdiweb.com doesnt keep them in stock and the guy was rude. so i could take my chances with wattsupply out of the US and hope I dont get dinged at the border or use futureelectronics.... decisions decisions.

thats something like 20 LEDs i could buy if CDIweb had them.

did i just start using LEDs as monetary unit? WTF