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  1. #1
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    DIY dual cree light

    Hi All, i have been putting off a LED light build for a while and i have finally orderd some parts to get things going. I have posted a similar question on CPF so sorry if you read that forum also.

    I have ordered 2x cree drop in modules from Ebay. i am currently working on a housing that will look similar to this design http://www.candlepowerforums.com/vb/...d.php?t=162245

    i have a couple of questions in relation to powering it up. I have a 9.6v 3ah battery that i would like to use. would i be best wiring it up in series?

    If i were to use a batterypack that takes 4x AA's to reduce the size and mount the pack on my helmet, Would i be best wiring it up in parrellel?

    I will post up pic's as soon as i get the design sorted.

    Thanks for any help you guys can give me.

    G

    FRONT


    BACK


    DROPIN MODULE


    BATTERY - OPTION 1 - MAKITA


    BATTERY - OPTION 2 - HELMET MOUNT
    Last edited by Pitto; 06-20-2007 at 05:53 PM.

  2. #2
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    another style i had in mind


  3. #3
    Spanish biker
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    Hi, the picture are well, now you have that do it reality

    Greetings - Saludos
    Warning!!! my english is very very bad, sorry.

    Easy DIY led light1
    Easy DIY led light2

    The Beast!!!

  4. #4
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    yes, the waiting game has started, just need the dropins to get here and i can start the build.

    G

  5. #5
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    I'd forget about the 4AA pack, and just go with the 9.6v, 3A pack and a bFlex (taskled.com) to drive the dual LED light (wire them in series). Not sure what kind of beam you will get from the drop-ins. Probably more of a spot light beam intended for flashlights, which may be fine if that's what you want. Also, do you know if the Crees are XR-Es and do you know what bin you are getting. All worth considering.

    It's all about experimentation... have fun!

  6. #6
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    the drop ins have their own built in regulators, so they are a lens+emitter+regulator built in a compact unit. it worked out more cost effective to do it this way rather than build from scratch, the downside is yes, the lenses are more of a spot than a wider spread, but it should be fine.

    the 3ah 9.6v battery is a stick battery for my cordless drill. i have a 1 hour charger at home for it so it simplifies the setup somewhat. i should get good running time out of it thats for sure.

    G

  7. #7
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    hoping the dropins land today, as i am keen to get started.

    heres a new design i am going to aim for.



    G

  8. #8
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    Nice.
    Do you plan to cover the front with anything to protect the LEDs from the elements?

  9. #9
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    just wathcing ebay at the moment for a glass cutter and then i will butcher a bit of 2mm glass from a picture frame. a little tidy up on the belt sander and then some tiny dobs of silicon should do the trick nicely.

    G

  10. #10
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    actually, work has come into possession of some optical grade 3mm lexan polycarbonate which i think would machine up great on the cnc.

    G

  11. #11
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    Quote Originally Posted by Pitto
    actually, work has come into possession of some optical grade 3mm lexan polycarbonate which i think would machine up great on the cnc.

    G
    I think that would be safer than glass.

  12. #12
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    Not to knock on Achesalot's design, because it is a great one. But if i had access to a CNC machine I would go for a round tube and press fit the assemblies into it, add a step to the end for an O ring and glass. Round is better than square for several reasons especially if you have the equipment to work with it.

    my 1/2 cent

  13. #13
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    its not a Milling CNC, more of a flatbed CNC for doing Joinery.

    I see what you mean though.

    G

  14. #14
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    dropins landed on my desk today, time to buy some components from the local electronics shop and get down to building.

    G

  15. #15
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    found some black anodised tube and some plastic stoppers.

    time to start the build shortly.



    Last edited by Pitto; 07-05-2007 at 04:11 PM.

  16. #16
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    "That's hot."

  17. #17
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    Quote Originally Posted by Pitto
    found some black anodised tube and some plastic stoppers.

    time to start the build shortly.



    WTF did you find that anodised black tubing? Damn.... that looks nice!

  18. #18
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    Quote Originally Posted by Pitto
    found some black anodised tube and some plastic stoppers.

    time to start the build shortly.



    WTF did you find that anodised black tubing? Damn.... that looks nice!

  19. #19
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    it was bought at the local hardware store.

    heres the web page for the manufacturer.

    http://www.rcr.com.au/connect-it/

    G

  20. #20
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    finally sorted the mounting system out. building will start shortly.



    G

  21. #21
    Gone riding
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    Looking forward to the build log and finished light!

    Dave.

  22. #22
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    i am pretty much 95% there. i just need to sort out a small table for my router, then i can start the fabrication process.

    i have done a test run on my work CNC for the polycarb lenses and they look great. the tolerances were off a bit so i have to re run them so they are a tighter fit inside the tubing. i also only have 4 cree p4 dropins at the moment and would like to get 2 more in a SSC config for helmet mounting. but i think it can wait till i build the bar mounted versions first. i will however machine the housing up for it so its just a matter of mounting the dropins and a bit of soldering.

    I will take a heap of pics when i get the ball rolling shortly. The CAD work is easy, now here comes the hard part.

    G

  23. #23
    PM Me for Wood Fenders
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    I like.....looking forward to seeing the plans and the how to do it's!
    The wood is being bent! Let me know what you need!

  24. #24
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    regulator questions

    i am in a bit of a quandrum. i have done the mounts to my LED lights i am building and i had 2x drop ins wired in series and when i hooked up 9.6vc, both blew thier regulators. the p4's are ok, but i have now ordered some replacement regulators from DX and should get here next week.

    my question is, i have 9.6v, 3000ah battery and i want to drive 2x p4 leds. can i run 2x p4 leds and use only 1 regulator to drive it? ifnot, whats the best way to acheive this.

    heres the link to the regulator.

    http://www.dealextreme.com/details.dx/sku.3256

  25. #25
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    Those drivers can only handle an input up to 9 volts so a 9.6v input will blow the driver

    You really want to look at a 3023 DE or a nflex/blfex driver from taskled as those can manage input voltages above what you are looking at. Otherwise you are looking at two seperate drivers and battery packs.

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