Li-poly pwm flashlight

posted May 29th 2007 11:31pm by
filed under: misc hacks


I was looking for some interesting ideas for using lithium polymer cells and stumbled across this diy flashlight. (It’s on geocities, so hit the cache.) Flashlights aren’t usually that interesting, but this one uses a pair of li-poly cells and a PWM signal generated by a pic controller to regulate the power to the lamp using a IRL1404 MOSFET. It still requires an external li-poly charger, but looks like a nice project to get into li-poly and PWM applications.

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7 Responses to Li-poly pwm flashlight

  • bird603568 says:
    May 30, 2007 at 1:03 am

    is it me or is the cache broken?

    Reply Report comment
  • lonasindi says:
    May 30, 2007 at 3:29 am

    that’s a fancy flashlight.

    Reply Report comment
  • Matt says:
    May 30, 2007 at 12:41 pm

    its broken

    Reply Report comment
  • A. Zimlich says:
    May 30, 2007 at 2:25 pm

    Google Cache

    Reply Report comment
  • A. Zimlich says:
    May 30, 2007 at 2:32 pm

    http://tinyurl.com/29tk24

    Reply Report comment
  • Bob7k says:
    June 1, 2007 at 6:49 am

    ahh, LiPoly batteries, i do love thier energy output compared to something like a Ni-Cd or just plain lithium cells. also, ATI uses PWM in thier fans, but after AMD bought them, i dont know if they still PWM thier board cooler fans

    Reply Report comment
  • Sally Kraus says:
    July 16, 2007 at 7:11 am

    Cool site

    Reply Report comment

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