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    Building new light

    So here I go, got all my parts. This light will have 32 2' samsung lm561c light strips. They will be ran parallel and series to get the proper amps per strip. If all the specs are followed and achieved it should run just under 400 watts.
    Click image for larger version

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    all of this will become 2 2'x4' frames with 16 strips each.
    .525 A a strip, luminous flux of 64,000 x .014= 896 PPF / 394 watts = 2.27 umols/s. I think that is correct DrPhoton would know.
    "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

    Current grows in flower ๐ŸŒบ
    5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
    600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

    2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
    Water, molasses, occasional tea or root organics HPK tea
    400 actual watts, LED build


    Canna nutrients line with boost - dwc, Terpinator - dwc
    โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

    Super soil - mixed myself
    13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

    #2
    I would like to see the concept, i assume its going to be a oblong rectangle ? I also assume that its going to be 400 watts total so 200 watts per 2x4 fixture ?

    Working out the accurate light output is a little more complex than what we have previously discussed. First theres the effeciency of the drivers, which are around 90% each. So you can take off 180umol, making it 714umols and 1.78umols per watt.

    But then to make matters worse, the photon efficiency is highly dependant on several variables, such as diode temperature and drive amperage. These completely change the aspect of how efficient a fixture will be. Here is a diagram for your diode model.


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    Not to mention the optical and radiative losses.
    โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹
    The luminosity per watt values that are usually provided by diode manufactureres are theoreticle values which are only achievable under unrealistic ideal conditions. So one must use the datasheet provided by manufacturers in order to calculate a realistic value.

    I know you were probably just after approximate figures, however its not even an approximation. The variables make too much of a difference that it makes simple calculations unrealistic.
    Written Articles:
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    Having A Light Source Too Close

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    Comment


      #3
      Thank you swiftly putting me in my place. ๐Ÿ˜‚
      "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

      Current grows in flower ๐ŸŒบ
      5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
      600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

      2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
      Water, molasses, occasional tea or root organics HPK tea
      400 actual watts, LED build


      Canna nutrients line with boost - dwc, Terpinator - dwc
      โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

      Super soil - mixed myself
      13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

      Comment


      • RosettaStoned
        RosettaStoned commented
        Editing a comment
        I do believe these are the same diodes chilled is using. If that matters

      • DrPhoton
        DrPhoton commented
        Editing a comment
        Not really ^.^

        They use dual cooling systems for a reason, it improves the diode efficiency alot. So comparisons cannot be made.

      • RosettaStoned
        RosettaStoned commented
        Editing a comment
        Well Dan, I must say.....you really know how to shit on someone's parade ๐Ÿ˜‰

      #4
      This will be great. Can I ask where the materials were sourced from?

      Comment


      • RosettaStoned
        RosettaStoned commented
        Editing a comment
        Digikey rapidled Amazon home depot heatsinkusa

      #5
      Want to see pics when completed

      Comment


        #6
        Got this far today
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        one 2x4 with heatsinks and strips attached with thermal adhesive tape. Next drill out marks and tap for machine screws to hold them in place. Attach the aluminum angle to the edges for a place to hang it from and also make the sheet rigid. Build a small frame for the driver to sit. Wire it up.
        Apparently I should have smoked before starting. I put one strip on backwards, or three....depends on how you look at it. Either way, now I HAVE to make the second the same. Its just the way I am. I justified not moving them because 3/4"is not going to make a difference in light output. It still drives me nuts but the mess of cleaning and scraping up the thermal tape makes me crazy too.
        Last edited by RosettaStoned; 08-12-2018, 08:21 PM.
        "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

        Current grows in flower ๐ŸŒบ
        5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
        600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

        2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
        Water, molasses, occasional tea or root organics HPK tea
        400 actual watts, LED build


        Canna nutrients line with boost - dwc, Terpinator - dwc
        โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

        Super soil - mixed myself
        13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

        Comment


        • DrPhoton
          DrPhoton commented
          Editing a comment
          Brilliant, do these strips have optics ?

        #7
        DrPhoton
        I added the pdf of the spec sheet I used as well
        Attached Files
        Last edited by RosettaStoned; 08-12-2018, 10:19 PM.
        "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

        Current grows in flower ๐ŸŒบ
        5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
        600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

        2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
        Water, molasses, occasional tea or root organics HPK tea
        400 actual watts, LED build


        Canna nutrients line with boost - dwc, Terpinator - dwc
        โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

        Super soil - mixed myself
        13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

        Comment


          #8
          One done.....that's a lot of drilling and tapping.....whew
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          "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

          Current grows in flower ๐ŸŒบ
          5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
          600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

          2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
          Water, molasses, occasional tea or root organics HPK tea
          400 actual watts, LED build


          Canna nutrients line with boost - dwc, Terpinator - dwc
          โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

          Super soil - mixed myself
          13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

          Comment


          • RosettaStoned
            RosettaStoned commented
            Editing a comment
            MrStoker
            No, it's a morsen 1000 watt. It was broken so i replaced the panel with cobs and mono LEDs. I'm sure the galaxys will work fine. I don't like them because it seems minimalist.

            I do have 3 unaltered 300 watt red/blue galaxy hydros just sitting here ๐Ÿ˜‰

          • MrStoker
            MrStoker commented
            Editing a comment
            Oh yeah, read your posts about fixing up broken fixtures with your own LEDs. Great posts btw. On those units, did you re-use the original drivers?

          • RosettaStoned
            RosettaStoned commented
            Editing a comment
            Yes I did.

          #9
          Finished
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          a few days under the new lights and I see I have a learning curve to dial them in.
          "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

          Current grows in flower ๐ŸŒบ
          5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
          600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

          2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
          Water, molasses, occasional tea or root organics HPK tea
          400 actual watts, LED build


          Canna nutrients line with boost - dwc, Terpinator - dwc
          โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

          Super soil - mixed myself
          13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

          Comment


          • DrPhoton
            DrPhoton commented
            Editing a comment
            Yea, they typically make the dome shape opticals for individual diodes or large ones for cobs. Not sure if they make optics for strips, but i know some manufacturers such as fluence do use strips and still have optics. But they may be proprietary.

          • Chefbjy
            Chefbjy commented
            Editing a comment
            This is really awesome ๐Ÿ˜€.

          • RosettaStoned
            RosettaStoned commented
            Editing a comment
            Thanks Chefbjy

          #10
          Mixing colors is fine, in fact its actually more efficient to use multiple spectrum diodes such as 450nm blue and warm white together rather than just a full spectrum cool white diode. The reasoning for this is a little complex, i talk about it here in this thread. Ultraviolet has been shown to help with THC production in cannabis. However you want to be careful when using UV as it has also been shown to negatively effect photosynthesis in plants and reduce yield as a result. Common practice has it that it is best used in the last weeks of flowering, usually 2-3 weeks.

          Far red has not been shown to have any positive effect in plants. If used during vegetation it will negatively impair growth by stimulating photoreceptors that create elongation, leaf expansion and more. What it can do is help reduce the dark cycle in flowering to allow more light to be used during the light cycle. This is done by using far red (700-750nm) at the beginning of the dark cycle which shifts the plant into sleep quicker, so to speak. This has been shown to reduce the required dark cycle by around 2 hours. Effectively allowing the light cycle to operate at 14 hours rather than 12 hours but still induce flowering.

          Infrared has no effect on plants at all, its effectively just heat. Light manufacturers sometimes use infrared to mean far red lighting. Or they really are infrared and are just advertisement gimmicks. Infrared operates over 800nm, far red is around 700-800nm.+ More Options
          Written Articles:
          Light Metric Systemsโ€‹
          Using Light Efficiently
          The Light Cycle Debate
          Environment Conditions
          Grow Light Technologies
          How To Compare Grow Lights
          To Defoliate Or Not To Defoliate
          Having A Light Source Too Close

          Check Out Our Social Media Channels For More Resources:
          Facebook
          Twitter
          Instagram

          Comment


            #11
            This is what I found for the strips DrPhoton
            pll2026a-linea-lenses-product-brief_rev2.pdf

            "Be an artist of consciousness, your picture of reality is your most important creation, make it powerfully profoundly beautiful" Alex Grey

            Current grows in flower ๐ŸŒบ
            5 Star Killer 1 Terp-n-Pine "manifolds", four 7 gallon, two 5 gallon fabric, super soil, water, molasses, occasional tea or root organics HPK tea (started modified nute program beneficial waterings/amendments (no bottles) at week 3
            600 actual watts, 12 gen7 vero 29 cobs, 70 watts deep red/far red (emerson effect)

            2 GOO & 2 Island Sweet Skunk, 5 gallon fabric, super soil
            Water, molasses, occasional tea or root organics HPK tea
            400 actual watts, LED build


            Canna nutrients line with boost - dwc, Terpinator - dwc
            โ€‹โ€‹โ€‹โ€‹โ€‹โ€‹botanicare calmag plus and GH silica, pH up/down

            Super soil - mixed myself
            13.5x14 grow room divided, 13.5x6 flower 6" can fan pro max/can-lite carbon filter, 13.5x8 veg/work room passive intake

            Comment


            • MrStoker
              MrStoker commented
              Editing a comment
              Did you use the lenses? After reading some of Dangerdan's articles, I've become convinced it'll be necessary to collimate the light source to more efficiently use the energy produced. Didn't know if there were optics available for LED strips so you answered one of my upcoming questions. Thanks.

            • RosettaStoned
              RosettaStoned commented
              Editing a comment
              I did not. I just keep mine close to not lose as much light as possible

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