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Thread: miniature UV flashlight powered by smartphone

  1. #1

    Default miniature UV flashlight powered by smartphone

    Hello, I'm a newbie on this forum. So first of all let me briefly introduce myself - i'm a ukrainian DIY hobbyist and while my main interest is audio (see my signature) I'd like to build a bit unusual UV flashlight.
    From time to time I need UV flashlight. It should be very small, even smaller then usual keychain flashlight yet much more powerful then something like nitecore tube UV (this toy has usable range of 2 inches lol).
    So I've decided to build a small uv flashlight without battery inside and use a smartphone as a power source. Please take a look what I've built:


    And attached to smartphone:

    Small animations to show what this flashlight is capable of:


    What do you think about such idea and it's implementation?
    Any suggestions?

  2. #2

    Default Re: miniature UV flashlight powered by smartphone

    Sorry, problems with animations in previous posts:


  3. #3

    Default Re: miniature UV flashlight powered by smartphone

    Good job. The force is strong with is one.

    Welcome to cpf.
    John 3:16

  4. #4

    Default Re: miniature UV flashlight powered by smartphone

    Brief explanation why everyone who want to keep his house clean need UV flashlight. Everything is recorded with smartphone\ smartphone with attached flashlight.

  5. #5
    *Flashaholic* thermal guy's Avatar
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    Default Re: miniature UV flashlight powered by smartphone

    They make a regular led like this? Cool concept.
    If i had one day left to live i would want to be at my workplace.Because every day is like a frickin eternity.

  6. #6

    Default Re: miniature UV flashlight powered by smartphone

    Quote Originally Posted by thermal guy View Post
    They make a regular led like this? Cool concept.
    Who "they"? I've used factory led of course. Everything is assembled by me - 3d printed case, laser cut faceplate and the most complex thing - special controller to receive current from smartphone.

  7. #7

    Default Re: miniature UV flashlight powered by smartphone

    are you building it for future mass production\sales, or you just build 1 for yourself? it looks pretty neat,

  8. #8

    Scowl Re: miniature UV flashlight powered by smartphone

    Quote Originally Posted by alpg88 View Post
    are you building it for future mass production\sales, or you just build 1 for yourself? it looks pretty neat,
    Everything I build - I build for myself. But then... sometimes it's worthy mass production Not very often ;(
    Last edited by Garuspik; 08-28-2019 at 03:16 PM.

  9. #9
    *Flashaholic* thermal guy's Avatar
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    Default Re: miniature UV flashlight powered by smartphone

    I didnít read your post correctly. I thought you found this for sale and bought it. Nice job.
    If i had one day left to live i would want to be at my workplace.Because every day is like a frickin eternity.

  10. #10
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    archimedes's Avatar
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    Default Re: miniature UV flashlight powered by smartphone

    Quote Originally Posted by Garuspik View Post
    Hello, I'm a newbie on this forum. So first of all let me briefly introduce myself - i'm a ukrainian DIY hobbyist .... So I've decided to build a small uv flashlight without battery inside and use a smartphone as a power source.... What do you think about such idea and it's implementation?


    I have moved your thread to "Homemade & Modified" subforum.

    If you would like to share further details of this build, many of us here on CPF would be very interested in that.
    ... is the archimedes peak

  11. #11

    Default Re: miniature UV flashlight powered by smartphone

    Quote Originally Posted by archimedes View Post


    I have moved your thread to "Homemade & Modified" subforum.

    If you would like to share further details of this build, many of us here on CPF would be very interested in that.
    Sorry that I've chosen wrong sub-forum. A newbie mistake.
    I'm open to any discussion and can answer any questions.
    Verum Audio - audiophile planar magnetic headphones.

  12. #12

    Default Re: miniature UV flashlight powered by smartphone

    A year have passed after I've made first samples and I decidet to try luck on Kickstarter: https://www.kickstarter.com/projects...our-smartphone


    So if you feel like it is a time for such tiny and IMHO useful device I ask you to support this campaign.


    Thanks in advance!
    Verum Audio - audiophile planar magnetic headphones.

  13. #13

    Default Re: miniature UV flashlight powered by smartphone

    Could you share more info on the UV emitter you're using? Wavelength, power? I like the concept, I'd like to support your Kickstarter campaign, just wanted to know more about the LED.
    Thanks:-)

  14. #14

    Default Re: miniature UV flashlight powered by smartphone

    Quote Originally Posted by George7806 View Post
    Could you share more info on the UV emitter you're using? Wavelength, power? I like the concept, I'd like to support your Kickstarter campaign, just wanted to know more about the LED.
    Thanks:-)
    Hi. As it's said on project page it's lite-on 365 nm led. It's rated 3w but sure it's run at much lower rating. About 400 mW.
    Verum Audio - audiophile planar magnetic headphones.

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