Blue LED Flashlight Mod





Introduction: Blue LED Flashlight Mod

Here's a quick 10 minute hack to turn an ordinary white LED flashlight into a much cooler blue LED one.

Step 1: Dismantle the LED Part of the Flashlight

Take appart the top part of the flashlight, and remove the LEDs from the reflector part.
This may be hard, as it's stuck in there, but in the 2 that i've done this two, they aren't glued at all, so it should be easy.

Step 2: Remove the Old LEDs

Desolder the old LEDs from the round PCB, be sure to mark the direction of the flat side, as that's important.

Step 3: Put the Blue LEDs In

Put the Blue LEDs into the holes you just made. Be sure to keep the flat side pointing in the same direction, otherwise the circuit wont work.

side note, ultra bright white LEDs use the same current as ultra bright blue LEDs, green ones will also work, as should violet, and pink LEDs.
Red or yellow will not work.

Step 4: Put the Flashlight Back Together

That's it 3 and a half steps, super simple, and even though the blue LEDs are no where near as bright as the original white ones, the simple fact that they are blue makes up for it!

see some more pictures heresee some more pictures here



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    I read your instructable some time ago, but never really had a reason to switch out LED's in a flashlight other than just for fun. Recently though, I had the need for a portable and bright UV light source. I found two Guidesman flashlights, each under $10, at a local Menards and went to work. Thanks to the inspiration from your instructable I was able to convert both flashlights, one with 9 LED's and the other with 15, with relative ease. I don't know if I would of thought to do this myself, so I wanted to give you my thanks.

    no problem that's why i made it!
    I do have a question, how is the UV leds?
    Because I was recently looking to get a UV light for some stuff, and I'd much rather make my own if possible.

    do you know any way to teach a 11 year old how to defuse a LED

    what do you mean by defuse?

    like diffuse the light so it's not a point, encasing it in clear hot glue is somewhat usefull for diffusing it.

    i'm not sure what you mean by defuse though.

    I was more than happy with the ones I bought from . If you need the tech specs of the LED's look to the comments on that same page. If I have my flashlights on for a while, they get pretty warm though, but they are bright and that's exactly what I wanted.

    you could buy brighter blue LEDs that are made by the same manufacturer of the flashlight from, since I've only frys sells them. And of the three stores ive been to (all in one day lol) I've only found red. I think coast uses cree LEDs and brands them as their own.

    why don't you just color the LED lightbulb blue with a sharpie or something

    because you'll just let the blue light out, and the rest (white is a mixture of all colours, after all), and the rest will turn to heat. Blue LED's just turn most of the available electricity into blue light, so are more efficient.

    what about a red blue and green led in it and three swithes to have about eight diferent colours including white

    could do it, but in that tiny space... it's be beyond the authors soldering skills. :-) Seriously though, it's be easier to use three colored led's, and add color subtraction filters to the lens instead.