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Thread: Help with my MR11 HID head conversion to LED

  1. #1
    Enlightened mddolson's Avatar
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    Default Help with my MR11 HID head conversion to LED

    This light started lift as a DIY trail tech/WA MR11 10W canister light.
    I'm a machinist & don't know much electronics so need some advise.
    I can do simple soldering, but have managed to toast my ballast by connecting it in reverse polarity.
    This is a dive light so needs are simple, on/off or on/off, hi/lo.
    I have attached my lamp head for space limits.

    My battery is a lithium Ion : http://www.dx.com/p/9800mah-12-6v-re...8#.VxaVvXrprui.
    It's actual capacity is 3.3 Ah. (not 9.8)
    For led I chose http://www.dx.com/p/20mm-10w-1000lm-...9#.V2ko2qLpqzk
    but also found these:
    http://www.dx.com/p/20mm-10w-980lm-c...1#.V2krDKLpqzk

    OR http://www.dx.com/p/20mm-cree-xm-l2-...8#.V2krrqLpqzk

    I have no idea why one would be better than another (hens need advise).

    For a reflector I chose: http://www.dx.com/p/35mm-35mm-alumin...9#.V2kqY6Lpqzk
    based on reading in the forum.

    Now the driver???? This is where I'm lost.
    Reading specs I picked a 3mode http://www.dx.com/p/t6-2500-3000ma-3...9#.V2klSqLpqzk

    3 modes, I can live with, although the strobe is not required. But I have not idea how to modify it, nor want to risk damaging it.
    Question should this be potted/encapsulated? Before installation (concerned about damaging windings?)

    Advise & directions are needed & greatly appreciated.


    Mike D
    Last edited by mddolson; 06-21-2016 at 07:16 AM.

  2. #2
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    Lamp head section.
    Sorry I am unable to upload jpg image, main cylinder inside is 1.40" dia x 2.4" long with1"dia x 0.8" long wire cavity behind (at cable gland)
    Front lens is 1.62" dia x 0.25 thk sight glass.

    I am also considering either a carclo optic or 30mm aspheric lens instead of the reflector.

    http://www.ledsupply.com/cree-xml2-led-optics

    or http://www.dx.com/p/30mm-optical-gla...5#.V2lcR6Lpqzk

    Mike D
    Last edited by mddolson; 06-22-2016 at 05:00 AM. Reason: cannot add image

  3. #3
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    OK placed an order with DX.
    My first choice driver was out of stock so as an alternate I ordered a 5mode driver:
    http://www.dx.com/p/3v-12v-2500ma-5-...4#.V2vgTKLpqzk
    LED star : http://www.dx.com/p/20mm-10w-1000lm-...9#.V2wE6aLpqzk
    Reflector: http://www.dx.com/p/35mm-35mm-alumin...9#.V2hLJqLpqzk
    and a lens to experiment: http://www.dx.com/p/30mm-optical-gla...5#.V2lcR6Lpqzk

    now just waiting for the parts.

  4. #4
    Flashaholic* lucca brassi's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    Brand 20mm 10W 1000lm 8300K Cool White Emitter Board Module for Flashlight - White
    Color White
    Quantity 1
    Material Aluminum alloy + LED
    Emitter Brand Cree
    Emitter Model XM-L2 U2
    Output Power 10W
    Luminous Flux 1000lm
    Base Size 20mm
    Driving Current 3000mA
    Voltage 3.0~4.2V
    Application For flashlight
    Other Feature Color temperature: 8000~8300K; Cool white light
    Packing List 1 x Board

    --------------------------------------------------------------------------------------------------------
    Model wy6825
    Color Black + Golden
    Quantity 1
    Material Base Plate + Electronic components
    Operating Voltage 3V~12V / 8.25W
    Current 2500mA
    Mode Arrangement 100% light On / 50% On / 10% On / Fast strobe 8Hz / SOS Cycling
    Board Size Diameter: 22mm; Thickness: 10mm
    Mode Memory No
    Functions Suitable for driving LED
    Other Feature With anti- reverse battery protection function
    Packing List 1 x LED driver board


    what not fit together
    Last edited by lucca brassi; 06-27-2016 at 12:06 AM.

  5. #5
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    Thanks for the input Lucca.

    I have orders both 2.5 & 3.0 Amp drivers for testing.
    Waiting for parts now.

    Mike D

  6. #6
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    I have ordered another driver, http://www.ebay.ca/itm/191709509869 to replace the one above.
    Cree 10W T6 XML XM-L2/U2, component of torch flashlight or 12V Battery Car Light.
    Diameter: 20mm
    Thickness: 15mm
    Iutput Voltage: DC12V
    Output VoltageC3V
    Current: 2.5A
    Operating Temperature: -20~80 degree
    Storage Temperature: -20~80 degree
    Function: Open circuit, Short circuit and Over loading

    Mike D

  7. #7
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    Bench model testing is done.
    Found single mode 10w driver. Decided on Carclo optic rather than reflector & lens.

    I purchased a 6" x 1.5" dia 6061-T6 aluminum rod, hope to start turning the heat sink this weekend.

  8. #8
    Flashaholic* lucca brassi's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED


  9. #9
    Enlightened mddolson's Avatar
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    Default Re: Help with my MR11 HID head conversion to LED

    I have finally finished my LED conversion.
    Photos of completed Heatsink, driver, lamp & cannister are here:
    https://www.scubaboard.com/community....529002/page-4

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