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Shelving / cabinet lighting

BFBOB

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Sep 20, 2011
Messages
5,073
Lights in shelving, under or in cabinets is nothing new, but there is a new product for accomplishing it, and I thought you might be interested in how it worked for me. I came across this stuff on ePay (item no. 171440224418 ). It's a strip of flexible silicone rubber with LED's embedded in it every inch or so. It's pretty cheap, so I got some. I got the super-bright version in Warm White. It comes in a continuous 16' roll that you cut to the lengths you need. The strip is about 7/16" wide by 1/8" thick - takes up almost no space! It does require soldering to attach power leads to the cut pieces (the roll comes with leads already attached at one end). The places you can cut are clearly marked every 3". Then, use a razor knife to cut away the silicone covering the copper soldering pads and solder on your wires. The LED's are all in parallel, so you can make the strips as long or short as you like and each one sees the full 12V. I ordered just the LED strip, no power supply because I have a bunch of nice regulated 12V power supplies from dead computer monitors. I used nearly the whole 16', and the current draw is 2.4A, perfect for the common 3.3A supplies.
The sticky back on the LED strip is pretty good stuff, but I didn't think it would adhere well to the rough wood surface of my garage shelves, so I used some 1" strips of galvanized sheet metal left over from an HVAC project, welded a few tabs on and screwed it in place. This also gave me the opportunity to tilt the strips about 30 degrees inward so the light all shines on the shelves, not out into the room. The LED's beam spread is rated 120*, so the light is very even.
You could also mount it to a piece of nice shiny aluminum angle to form a reflector - or maybe you want to light up the floor some too.
It's hard to figure the actual light output from the fleaBay listing, but it looks to me like at least the amount you'd get from a 15W fluorescent, with a small fraction of the bulk - and low voltage wiring.
Take a look at the before and after fotoz - I'm happy!
 

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MTW

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Can we see some photos of the LED strip source and mounting methods? The pictures of the results look great.
 
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BFBOB

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Sep 20, 2011
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Can we see some photos of the LED strip source and mounting methods? The pictures of the results look great.

OK - I can't get any more pictures of the installation for a while, so a drawing will have to suffice. The upper one is what I did. The material is ~20ga galvanized sheet metal, 1" wide, with tabs welded on the top to screw to the underside of the shelves. 1" by 1/2" angle would work about as well (bottom drawing) as would any number of other mounting schemes. I just used what I had on hand, and salvaged material at that. The approximate beam spread is shown; the rated 120 degrees turned out to be pretty accurate. I did shoot some closeups of the stuff. The tick marks on the ruler are 1/16".

Thanks for the compliment. I'll have to admit I'm impressed by the results too. The light is brighter and more even than I'd dared expect.
 

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BFBOB

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if you are putting these in cabinets with solid door a simple magnet switch will trigger them and the will run fine off a simple 9 volt battery

Not for long! These LED strips, by my measurement, pull 180 mA per foot. The best 9V Alkalines have a capacity of 450 mAh at a 100 mA rate. At a 500 mA rate, that drops to 330mAh. Say you run two feet of LED strip on one shelf and hook up a good 9V battery to it. It'll pull 360 mA; at that rate your battery will be dead after one hour. In a seldom-used cabinet, that might be worth the hassle - battery shelf life (get it, SHELF life?:lol:) is up to about 4 years now. I you only get into it a few minutes at a time a few days apart, could be fine. It's an idea - it might work well in that Safety-Kleen cabinet to the right, but it's so shallow it really doesn't need lighting at all.
 

warmpancakes

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Not for long! These LED strips, by my measurement, pull 180 mA per foot. The best 9V Alkalines have a capacity of 450 mAh at a 100 mA rate. At a 500 mA rate, that drops to 330mAh. Say you run two feet of LED strip on one shelf and hook up a good 9V battery to it. It'll pull 360 mA; at that rate your battery will be dead after one hour. In a seldom-used cabinet, that might be worth the hassle - battery shelf life (get it, SHELF life?:lol:) is up to about 4 years now. I you only get into it a few minutes at a time a few days apart, could be fine. It's an idea - it might work well in that Safety-Kleen cabinet to the right, but it's so shallow it really doesn't need lighting at all.


I have 2 strips of 3 led each in a cabinet running off a 9 volt its a little use cabinet so far its worked for a year but id say im in the cabinet 5 minutes a month tops
 
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