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New DIY LED light

Discussion in 'LED and other Lighting' started by nfhiggs, Jun 17, 2017.

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  1.  
    nfhiggs

    nfhiggs Well-Known Member

    Finished up my new light and hung it up tonight. It consists of ten Samsung Acuity hard strips, 56 LEDs in double rows on 22" x 3/4" strip boards. I mounted two strips to a 48" long 3/4" aluminum U-channel, for a total of five light bars. Framed them together with 3/4 aluminum angle, for an 18" x 48" light. Powered by a 24 Vdc 15 Amp power supply. currently running at 1 amp per strip for 240W total.

    0615172124.jpg 0615172146.jpg

    The light in action
    0616172228.jpg 0616172229.jpg
     
    chinakush, lukio, ttystikk and 21 others like this.
  2.  
    bakedPotatoe

    bakedPotatoe Member

    Nice....
    There the strips in packs of 8 with 2 bonus thrown in?
     
    JSB99, VegasWinner and Moflow like this.
  3.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    nice uniformity
     
    Nugachino likes this.
  4.  
    canadian1969

    canadian1969 Well-Known Member

    very nice, where did you buy them?
     
  5.  
    nfhiggs

    nfhiggs Well-Known Member

    Yup. Gonna grab another set as soon as I can.
     
    ttystikk likes this.
  6.  
    nfhiggs

    nfhiggs Well-Known Member

    Picked them up on Ebay.
     
    Moflow likes this.
  7.  
    mauricem00

    mauricem00 Well-Known Member

  8.  
    nfhiggs

    nfhiggs Well-Known Member

  9.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    keep in mind they are probably 120 lm at xx current, which i bet in nf higgs case is a lot lower.

    id be surprised if he wasnt north of 150-160 lm/W with that setup
     
  10.  
    nfhiggs

    nfhiggs Well-Known Member

    I've not been able to come up with much data on these, so I don't know what they are rated at. I'm running them at 1 amp per strip currently. 24W per strip seemed reasonable. I plan to get a second set, and reduce the current to 600-700 mA per strip to increase efficiency. I really need to get a light meter to see where I'm at with these....
     
    Moflow and Jellypowered like this.
  11.  
    xX_BHMC_Xx

    xX_BHMC_Xx Well-Known Member

    Great looking fixture! Are these the double-row F series strips, or Samsung diodes on a generic PCB? I've been eyeing those F strips, but can't find them in stock anywhere.
     
  12.  
    bakedPotatoe

    bakedPotatoe Member

    Yer i bought 2 last nite,now i need to find a driver,because the 1 you linked dont ship to me land.....fml...
     
  13.  
    nfhiggs

    nfhiggs Well-Known Member

    No, these are salvage pulls from Samsung "Acuity" brand troffer lights. Pulled from new lights that were damaged in shipping. I wish they were the F series strips.... Those are the efficiency kings.

    But at 2 bucks a pop, they are definitely worth using.
     
  14.  
    canadian1969

    canadian1969 Well-Known Member

    Are there links in this thread I am not seeing?
     
  15.  
    nfhiggs

    nfhiggs Well-Known Member

    I think I linked them in a different thread.
     
  16.  
    Big Green Thumb

    Big Green Thumb Well-Known Member

    I have been watching those all week wondering how usable they are. Now that I see you have used them successfully, I just ordered 2 packs. Now I need to figure out what driver to use.
     
  17.  
    canadian1969

    canadian1969 Well-Known Member

    not to flog a dead horse here nfhiggs, but links may be helpful.
     
  18.  
    Big Green Thumb

    Big Green Thumb Well-Known Member

    LED strips: http://www.ebay.com/itm/262916650691
    Power supplies: http://www.ebay.com/itm/302241381428

    These links were posted by nfhiggs in another thread:
    "Here's an idea for ya...
    Buy two sets of these:
    http://www.ebay.com/itm/262916650691
    Buy two 24 V 10 amp power supplies:
    http://www.ebay.com/itm/302241381428
    Mount all twenty strips to a sheet of 44" x 20" 1/8 aluminum sheet, using arctic silver thermal adhesive:
    http://www.ebay.com/itm/400247964580

    Each power supply will run ten strips. No soldering needed, the strips have plug in terminals so all you need is some wire.

    A local machine shop can cut you a sheet of aluminum to size.

    400W LED light for about 100 bucks."
     
  19.  
    xX_BHMC_Xx

    xX_BHMC_Xx Well-Known Member

    Nice buy, keep us posted!
     
  20.  
    nfhiggs

    nfhiggs Well-Known Member

    Big Green Thumb pulled it up for me - Thanks Bro!

    You could also use heatsink stock from Heatsink USA. The .601 would probably be good for 20-25W per stick (1 amp), and the 1" would be good for maybe 1.5 amps
     

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