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Thread: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

  1. #1
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    Default DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    I will be outlining the build of a DIY headlamp that does require any special tools (except for a soldering iron). It runs off 3x AA NiMH cells and has 5 modes - Hi > Mid > Lo > Strobe > SOS. Here is a beamshot (at 1M on medium) as well as current draw and runtimes based on 2200mAH cells. Total cost parts, excluding batteries, should be under $15. The next post will describe the parts required for the build - and where to get them.




  2. #2
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    There are 3 major components in this headlamp.

    1. 3x AA battery case with switch $1.30 http://search.digikey.com/scripts/Dk...s=SBH-331AS-ND



    2. A 3.5mm Audio extension cable (1.5M, 59in. long) $1.54 http://www.dealextreme.com/details.dx/sku.5157



    3. A CREE Q2, 5-mode Light Engine (21mm. diameter, 35mm. long) $10.78 http://www.dealextreme.com/details.dx/sku.19464
    Last edited by rmteo; 01-03-2010 at 10:29 AM.

  3. #3
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Reserved for build instructions.

    .....coming soon.

  4. #4

    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Hi,

    I just have one question. What will be the advantage compared to this lamp:
    sku.20763

    Thanks

  5. #5
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Quote Originally Posted by mdiabolo View Post
    Hi,

    I just have one question. What will be the advantage compared to this lamp:
    sku.20763

    Thanks
    It is very similar in spec to 20763. This one has a separate power (battery) pack instead of having the batteries on the head. 20673 weighs 4.66oz. while this one is only about 0.7oz. Also, a separate power pack means that you can use different size batteries (it uses AA compared to AAA in the 20763) - I have done a version that uses a 3.7V, 15000mAH LiPO battery for super long run times.

  6. #6

    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    You have $1.37 to come up with a mounting system. Preferably with a tilting mechanism.

  7. #7
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    I'd really like to see this light with a more efficient emitter still, a Cree R2 or XPG R5 (I think that's the latest hotshot) to crank the lumens over 200 with the same power draw and heat. That would put it in a league above the Apex, Fenix etc. Given the modular nature, it should be possible, no?

    How about this one as a donor- 230 lumens, 5 modes:

    http://www.dealextreme.com/details.dx/sku.16844
    Last edited by Offroad'Bent; 01-07-2010 at 07:25 AM. Reason: Updated link
    Triple XP-E and XM-L headlamps/ bike lights.
    XP-G Modified PT Apex and EOS
    Custom Night Lightning iBlaast II

  8. #8
    Flashaholic* gallonoffuel's Avatar
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    The OP has been temporarily restrained, although I too am interested in how this works out.

  9. #9
    Unenlightened
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    bump. this was a tease!

  10. #10
    Enlightened vaska's Avatar
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Similiar thread at a Russian forum One can understand a lot from the photos even without knowing Russian.
    Last edited by vaska; 04-05-2010 at 03:16 AM.

  11. #11
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Quote Originally Posted by gallonoffuel View Post
    The OP has been temporarily restrained.
    As in by LE authorities?
    Travis

    Various Neutral Tinted Goodness.

  12. #12
    Flashaholic* hank's Avatar
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    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Any progress? An old friend who's a farmer emailed in disgust that his "100 lumen 3xAA" headlamp often fails at night while he's out chasing varmints out of his crop. It's partly his fast NiMH charger killing the batteries--but as he needs new batteries and charger, he ought to get a new headlamp.

    I've been looking for something for him (he's got slow web access). Something like this --- battery pack -- seems likely.

  13. #13

    Default Re: DIY: Headlamp, 140ish Lumens, CREE Q2, 3x AA, Multi-mode, <$15

    Quote Originally Posted by hank View Post
    Any progress? An old friend who's a farmer emailed in disgust that his "100 lumen 3xAA" headlamp often fails at night while he's out chasing varmints out of his crop. It's partly his fast NiMH charger killing the batteries--but as he needs new batteries and charger, he ought to get a new headlamp.

    I've been looking for something for him (he's got slow web access). Something like this --- battery pack -- seems likely.
    i'm not sure if you'll get a response considering the age of the thread.

    you can buy ready made headlamps for less than the cost of this build. i have a sku 8238 from Manafont; a lot of headlamps sold by budget Chinese retailers are horrible, but that one is actually decent. it uses 3AA, an XRE (not sure if it really is a Q5, but it's bright), and flood to throw optic that works well. plus it has a good tilter, which is often one of the weakest points on a cheap headlamp. the battery cable is a little bit short, but i haven't found any other obvious flaws with it so far. i've used it as a backyard work light the last couple months and it has served me well. it's not waterproof and doesn't approach the overall quality of a Princeton Tec or a Petzl, but it cost me just under $12 so i'm pretty happy with it so far.
    Last edited by robostudent5000; 01-11-2012 at 07:16 PM.

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