my DIY LED lightning: easy to make, decently looking, 3-x more efficient then CFL - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 09-26-2014, 11:35 PM Thread Starter
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my DIY LED lightning: easy to make, decently looking, 3-x more efficient then CFL

Made from aluminum carpet trim from Lowes ($12) and rigid aluminum LED strips ($12) from China.



This is complete project:
(ignore box with arduino on top - you don't need it)

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Installed on aquarium:

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Cheapest, and decent loooking, aluminum heat-sink I could find, is aluminum carpet trim - 6' x 2" is $12 at Lowes, thus for less then 36" aquarium you only need one (if you double it):

http://www.lowes.com/pd_16297-81-782...rim&facetInfo=



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I've used four rigid aluminum LED strips (5050 or 5630) about $3 per one. (and PVC fitting to hold it on aquarium)

http://www.aliexpress.com/premium/ri...iewCP=y&catId=

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You only need internal plate with LEDs out of strip, thermal glue it to carpet trip:

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Thermal glue:

(this one is about $7, but you can find smaller one several times cheaper)

http://www.dx.com/p/fujik-silicone-t...9#.VCXt9xZ0aNs




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Regarding efficiency:

Other light I have uses 4 13 watt CFL lights and makes about 1600-1800 lumen consuming 57 watts

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New system used 38 watts but produces 4400 lumens
(light meter says 440, but there is x10 multiplier at lower right corner)
Thus it is about 3.5 times more efficient.

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Later I've added 2 45mm VGA cooling fan connected in series (to power them at 6V -> totally silent), to keep system cooler. Before fans, it was getting noticeably hot, now it has almost room temperature.

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Power supply - MeanWell LPV-60-12 (constant 12V, 60 watt) about $20

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Connectors - JST connectors on ebay or anywhere (cheap and work fine)
($1.50 for 10 pairs)

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post #2 of 2 (permalink) Old 09-27-2014, 12:21 AM
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I'm still getting a kick out of the aluminum carpet trim heatsink. Ingenious!
Solcielo lawrencia is offline  
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