Yes, another LED thread

Discussion in 'Anything DIY Related' started by naptalene, 13 Dec 2012.

  1. naptalene

    naptalene

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    Hi Guys,

    Still not finished but thought it's been ages since the bulk order and thought I'd post up what's done so far as a build.

    I'm no boffin or anything like that but figured it's always nice to see multiple ways of doing things, and hopefully someone looks and goes "hey, I can do that" and jumps in..... so here goes.

    My LED lights are 12RB XTE's, 12 CW XPG, 2UVs, 2 Oranges and 2 Cyans.
    RB's on a 48-60P, CW on another 60-48P and originally the others were all going on a third one. I found out JUST in time that the drivers not only have a maximum amount of LEDS they can run but also a MINIMUM. I would have fried the 6 LEDS so Mike at Rapid recomended a 27-P. I did that and all good.

    I opted to build 2 seperate heatsinks so I could move them around a bit.
    This paid off hugely as you'll see later :)

    So here's my heatsink

    TopSink_Holes.jpg

    My LEDs have 60 optics and will hang over an open top rimless tank.
    So I needed to drill holes in the tabs to put wire through.

    So out comes the measuring device and do all the marks. I will also have a vanity hanging under the heatsink to hide any wires. This will hang on some machine screws that thread into the heatsink underneath.

    MeasureIt.jpg


    This next one is checking the depth of the drill

    DepthCheck.jpg

    I used Q20 to lubricate as I drilled the aluminium. It's what I had and worked.
    I then used an M3 threader to thread it for the screws.

    Here's the rough idea

    Screws&MountingIdea.jpg

    Imagine a Perspex box hanging underneath on those screws to hide the wiring and stop light bleed into the room

    TopSink_Holes.jpg

    MeasureIt.jpg

    DepthCheck.jpg

    Screws&MountingIdea.jpg
     
    Last edited: 13 Dec 2012
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  3. naptalene

    naptalene Thread Starter

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    So now for the layout......

    I cut a bit of paper out the exact size of my heatsink and did a grid for the LED's
    Mine are very tight for SPS (hopefully lol.)

    So I did the layout and traced around each LED and then cut the section out.
    I labelled which colours will go where and which heatsink was which. That's important as theyll both be slighlty different, not much but enough to screw you over later when you put the wrong template on the wrong one:whistling:

    Grid

    GridPattern.jpg

    figure out what where

    Layout.jpg

    Label the stencil and heatsink

    LabelEachOne.jpg

    GridPattern.jpg

    Layout.jpg

    LabelEachOne.jpg
     
  4. naptalene

    naptalene Thread Starter

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    Okay, so next was putting on the stars. I opted for thermal adhesive.
    I don't have to worry about shorting screws to the heatsink etc and everything worked perfectly. It's a 2 part glue that you mix and then put a small amount on the back of your star. Squish it down and give a good wiggle to ensure nice spread and leave. Don't make too much at once as it dries in about 5min. so itll go hard on you......... that sounds horrific.

    One word of advice about the orientation of the stars. I made all the positives and negatives line up exactly so they looked uniform. It messed me up when I had to wire it lol. If the positive points on one star are on the right, ensure the next ones are in the correct orientation to avoid strange wire crosses like you'll see on mine.

    I also pre-tinned the stars before gluing them

    PreTinned.jpg

    Almost done

    StartGlueing.jpg

    PreTinned.jpg

    StartGlueing.jpg
     
    Last edited: 13 Dec 2012
  5. naptalene

    naptalene Thread Starter

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    I then soldered with 1mm ripcord. It's crap but cheap.


    View attachment 2336


    Both

    View attachment 2337


    I later removed this completely and redid with thinner black ripcord. Ill take pics soon and update and give a rundown on what not to do when soldering.......main thing is get a decent iron 'cause the heatsinks kill the heat for the soldering.

    They are running perfectly but I'll do some pics of hooking the drivers up and setting the current with a multi-meter shortly.

    Hope this helps someone.
     
    Last edited: 13 Dec 2012
  6. dallasg

    dallasg Moderator MASA Contributor

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    Good DIY skills, why orange and cyan?
     
  7. naptalene

    naptalene Thread Starter

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    I forgot to mention you need to clean the heatsinks well before gluing.....

    I used the man-sized can

    RealMen.jpg


    I can't get the previous post to display properly....sorry

    RealMen.jpg
     
  8. naptalene

    naptalene Thread Starter

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    @dallasg thanks and because someone said it would be cool LOL. Seriously. I might lose the cyans and do an extra UV and Orange if it doesn't look okay, but test runs seem fine so far.

    And I'm going to fade up oranges first, then blue then white, should look nice as a fake sunrise/set
     
    Last edited by a moderator: 26 Nov 2015
  9. blackknight08

    blackknight08

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    Looking gr8. Can you post your costs as you going or at the end, will be cool to know. I got a 4ft and would be nice to try this.
     
  10. dallasg

    dallasg Moderator MASA Contributor

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    Cyan should work well, Andrew from reef in the sky has a led unit with cyan, KR93 and looks awesome
     
  11. naptalene

    naptalene Thread Starter

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    @blacknight coolest. @dallasg hope so. As long as the light is white I'm happy. I personally don't like the heavy blue colour that's seems so popular at the moment. Suppose it depends on growth really.

    I built the Perspex box for the vanity..... Looks like a big ugly block:(
    Gonna have a rethink but it will serve its purpose for now.
     
    Last edited by a moderator: 26 Nov 2015
  12. naptalene

    naptalene Thread Starter

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    So done test runs, rebuilt the boxes and looking at building the unit to hang them from.

    Heatsinks hit 65C running full tilt in the black boxes. So have made the new ones with cooling slots along the side.
    When I tested the cooling fans I ran 1 with the fan and 1 without.
    The fan is a 12V pc cooling fan (120mm I think) cooler-master. I ran it at 5v and the heatsink dropped to 37.

    I'm using a heat sensor for my nitro Rc car so they could be a bit out of whack but the one is VERY hot and the cooled one is pretty much body temp.
    I'll load photos and costs tomorrow.
     
  13. Rossi

    Rossi

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    Nice DIY
     
  14. Toffees

    Toffees

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    Nice DIY I'm looking at doing this so info on where you got all the stuff from will be good with a cost rundown, like the heatsink and the LEDS please man I have looked everywhere but not been lucky so far.
     
  15. Visser

    Visser MASA Contributor

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    Looking good there naptalene!!!
    Im really glad you're finally starting up your tank bud!!! Looking forward to your finished tank!!!
     
  16. naptalene

    naptalene Thread Starter

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    @Visser thanks :) Going to be bumming some stuff down the line lol.

    OK

    Here are the boxes. I'm going to attempt RCA connectors to join the 2 units. Think my tolerences are too tight but who knows. So there will be 3 pairs of wires between the 2 units. 1 for each colour string. Then 3 more pairs that will run to the drivers. Itll make sense when it's done and I can show pics.

    Here's the visible side

    [​IMG]

    Here's the vents and holes for the RCAs (normal audio connectors like back of your HI-Fi)

    [​IMG]

    The side you don't see but looks the coolest lol.

    [​IMG]

    FrontSolid.jpg

    SideVents&Wireholes.jpg

    StrightBottom.jpg
     
    Last edited: 22 Jan 2013
  17. naptalene

    naptalene Thread Starter

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    Here's a Xcel sheet that has some handy formulas and then on the next page prices from Rapid with a dollar converter built in. I'm busy building more into it and was going to post it later but seems you guys are keen.

    I'm thinking of making these boxes and all the hanging bits, connectors, sinks etc as a DIY kits to buy - No LEDS/Electronics. Keen? I need to iron out the connector issues etc but think it will be nice for guys who want to build to save money/enjoyment, but don't want top bother sourcing the bits.

    Tank2.xls

    It was originally an Open Office file. Let me know if it's freaking out.

    Cheers
    Andrew
     

    Attached Files:

  18. naptalene

    naptalene Thread Starter

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    can someone explain how to just dump a pic where I want it?
    Keep getting these double pic posting things going down. Im using the uploader. Should
    I load them to a gallery and get 'em from there?

    Cheers
    Andrew
     
  19. RiaanP

    RiaanP Moderator

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    Upon Photobucket, upload there and post the image link on masa
     
  20. Visser

    Visser MASA Contributor

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    Lol, anytime andrew... In exchange forthw things i bummed from you, you can bum anything you like...
    Frags, fish, hardware, anything. Lol!
    Glad to see you finally decided to start up your tank bud!
     
  21. naptalene

    naptalene Thread Starter

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    @RiaanP got it, thanks. Used to do it that way.... Not sure why I changed.
    @Visser thanks mate
     
    Last edited by a moderator: 26 Nov 2015
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