Diy LED lighting

Discussion in 'D.I.Y.' started by Shaheedo, Mar 7, 2012.

  1. Sparki
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    Sparki Noob

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    Cree XML Cool White/Neutral White = 3000mA max
    Cree XP-G Cool White/Neutral White = 1500mA max
    Cree XT-E Royal Blue = 1500mA max
    Philips Rebel ES Deep Red = 700mA max

    You dont want to exceed maximum amps on the leds but they can run at lower amps without too much of a change in spectrum

    Non-dimmable:
    Mean Well LPC-35-700 = 700mA max - 3-14leds
    Mean Well LPC-60-1050 = 1050mA max - 3-14leds (best choice for 1500mA leds in non-dimmable)
    Mean Well LPC-60-1750 - 1750 mA max (usually used for XML's unless you can find a 3000mA driver elsewhere)

    dimmable:
    Mean Well ELN-60-27P dimmable driver = 0-2300mA - 5-8 XML's
    Mean Well ELN-60-48P dimmable driver = 0-1300mA - 8-14 leds (best choice for 1500mA leds in dimmable but it can be set to run 700mA leds too)
    0-10V Dimmable Nano Driver with/without Potentiometer = 0-700mA - 3-10leds

    P drivers: Fully programmable with PWM controllers (Arduino software, Reef Angel,etc)
    D drivers: Fully programmable with 0-10V controllers (Reef Keeper w/ ALC, Neptune Apex,etc) or a potentiometer + 10V AC adapter (If you have two or more drivers you can use our DIY 2 color dimming kit)

    You can mix the colours of the leds on the same driver but they all need to be within the same amp range eg. 10x1500mA whites with 1x700mA deep red running on a 700mA driver

    Hope this helps
     
  2. Shaheedo
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    Shaheedo Algae harvester

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    My LED light stopped working :(

    The epoxy I used to hold and sealed the LED's failed causing corrosion and some short circuits. But after doing some testing all the LEDs was still working.

    I took all the LEDs off, cleaned off the epoxy and thermal paste then riveted the LEDs to the aluminum bar. This time I Decided to uses @Greystoke advise and seal the LEDs with silicone. But ran into more problems, the silicon did not cure properly there must be something wrong with that batch it turned into silicon dough. Now I must clean all that off and reapply the new silicon.

    I got some LED optics with a 90deg beam that I want to try out. A lot of light is reflected off the water (enough to light of my room)so if light hits the water at a more acute angle there should be less light being reflected making it more efficient. I tested it out of the fish tank and I don’t see any spotting

    I put cling wrap over the silicon so i can smooth it out easyer
    [​IMG]

    [​IMG]

    2 with optics 2 without
    [​IMG]
     
  3. Greystoke
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    Greystoke Specialist

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    I also noticed the big reflection off the water surface on some applications and stuck to a 90 ° spatial distribution, so I hope that's OK otherwise we shall have to take that loss into consideration.

    [​IMG]


    PS: Still trying to figure out what that property really means. Which angle is this?
     
  4. tyronegenade
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    tyronegenade Specialist

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    angle from the vertical; i.e. perpendicular to the light source?
     
  5. Greystoke
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    Greystoke Specialist

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    You mean this angle ?

    [​IMG]
     
  6. Shaheedo
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    Shaheedo Algae harvester

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    After some repairs and mods here is the latest pics

    I added 10 90deg optics, 10 red 1w LEDs, 19 6000k 1w LEDs

    repaired some corrosion and sealed with silicon

    [​IMG]

    [​IMG]
     
  7. Greystoke
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    Greystoke Specialist

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    Are these "1 W" numbers accurate, or are they ratings?
    Otherwise, can you give me the bias current?
     
  8. sweetnsour
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    sweetnsour Plant menace

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    Very awesome tank you have there
     
  9. Shaheedo
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    Shaheedo Algae harvester

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    This LED project failed :( .

    It lasted a few months but the moisture squeezed in some places. Should be able to recover most of the LED's and start over and use what i learned from my experiences.

    If the LEDs are exposed to a enclosed moist environment of a fish tank it wont last, any exposed metal that the moisture gets will be corroded and it doesn’t matter what type of metal if current flows through it will turn to power (I thing it is because of the effect of electrolysis)

    This project could of survived if it was over a open top tank.

    Regards
    Shaheed
     

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