300W LED Grow Light

Discussion in 'The Projects Forum' started by Dan K, Jul 30, 2010.

  1. Dan K

    Thread Starter New Member

    Jul 30, 2010
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    I decided I want to test out LED technology in the growing environment. I hear very good things. Problem is the pre-built grow lights on the market are very expensive, not worth it. I figure I can cut the cost down a TON if I just make my own. The only requirements are that it is safe and reliable. I am dedicated and willing to learn.

    Right now I plan on using 100 Red & Blue spectrum LEDs that are 3w each. What is the best way to wire all this up? I have no knowledge of LEDs besides the very basics. I have been looking for a place to start picking up info specifically for my project but I have not been finding good results. I am strictly confused on how to wire everything/what components I need. I have no problems constructing a proper housing with a fan or whatever to cool it a bit. I just need some help getting started so I can understand whats going on, anyone have any useful links relevant to this project?

    How hard of a project is this from someone who is a noob? 1-10 rating? If anyone has any how-to information or diagrams that'd be helpful.
     
  2. windoze killa

    AAC Fanatic!

    Feb 23, 2006
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    Do a search for LED lights here. Someone else has done exactly the same thing.
     
  3. Wendy

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    Mar 24, 2008
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  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    <snip>

    Let's see a 150W high pressure sodium fixture/bulb = $100.00 (times 2 for 300W=$200.00)
    Now 100 x 3W LED's at $5.00 each if you get a great deal = $500.
    But assuming you have calculated needing 300W of typical lighting does not equal 100x3W LED's. Typically 15-20W of LED's equals 100W of HID lighting.
    So for 300W of HID you need 60W of LED (20x3Wx$5.00=$100)plus constant current drivers plus heatsinks... I bet you could get away with $250 for a 60W LED grow fixture that would be comparable to a 300W HPS bulb.
     
    Last edited by a moderator: Jul 30, 2010
  5. Wendy

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    A lot of folks also try to use grow lights using conventional LEDs. I have no clue how well it works, but I've drawn quite a few diagrams for folks.
     
    Last edited by a moderator: Jul 30, 2010
  6. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    From the wiki:

    This is the full page:
    http://en.wikipedia.org/wiki/LED_lamp

    Bertus
     
  7. BMorse

    Senior Member

    Sep 26, 2009
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  8. JDT

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    Feb 12, 2009
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    And will reduce the thermal signature in the police helicopter I.R. cameras...

    What am I saying - I'm sure you're not going to grow that kind of plant!
     
  9. BMorse

    Senior Member

    Sep 26, 2009
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    Actually, those are the "plants" they are growing with these types of light, I mean, who's going to go through this much trouble just to grow spices;)..

    Here in MI. There has been a boom in the Medical sale of it and there are a lot of people who are signed up as "providers" that have grow houses all over the place.... I have been approached by a couple of people interested in having me design something for them along these lines......

    B. Morse
     
  10. beenthere

    Retired Moderator

    Apr 20, 2004
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    If you please, the OP has a request for a small grow lamp. Commercial growers of illegal plants get caught because their houses glow like a Bessemer converter in IR, and their electric bills are the size of the Pentagon's. 300 watts is just more than a good reading lamp.
     
  11. Markd77

    Senior Member

    Sep 7, 2009
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    I'd love to grow chilli plants all year and I think it would look good in the corner of the room.
    I'm not sure how important the wavelength of the light is. If I read right it should be 465 and 665 nm. High power blues are available in 465 but most of the reds seem to be 630 nm.
     
  12. Dan K

    Thread Starter New Member

    Jul 30, 2010
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  13. Wendy

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  14. tom66

    Senior Member

    May 9, 2009
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    $100 :eek: you'd be better off building one of your own.

    It really is quite simple. Some resistors and a power supply will be more than enough. For example you could get a 3V 5A supply and try that, wiring all the LEDs in parallel. (You may need a resistor for the reds.) Or you could wire the LEDs in series with say a +24V supply. I could draw up a schematic if you want. But you need to tell us what exactly you want.
     
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