I have an old Russian generator flashlight that no longer worked, I figured the bulb was blown.  Rather than just replace the bulb I converted to an LED.  The LED does not use as much current so it is easier to crank the generator, and the LED will last longer than a bulb.

Step 1: Tools and Materials

Broken Flashlight

Soldering, stripping cutting tools.

Hot glue gun

4 Super-bright LED's
<p>Actually, I had a flashlight like this as well. I had hoped to do a similar project. Sadly, when I disassembled it, the cheap alloy flywheel had literally crumbled apart. Glad to know someone got to build this though.<br></p>
<p>I would try it, stick a single led in the circuit and pump gently. If it works go for a more complete circuit. Let us know.</p>
<p>Hello, I have a very similar flashlight to this one, in working condition. After removing the cover, I measured the voltage, and it seemed 1-2 V~ comes from the generator/dynamo, and it is way too few for white leds to light up. Or not?</p>
Wow, I actually have this exact flashlight laying around! Will give this a shot :]
Nice job! Now that you are using less power for the LEDs, maybe you could add a capacitor and make it stay lit for longer?
You could, but you would need to use a rectifier to get DC instead of the AC it is generating.
Great idea setting them in wood. I will be using this one.
Awesome work awesome idea!

About This Instructable




Bio: For now see me at: http://www.opencircuits.com/User:Russ_hensel
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