When I saw the cheap 100 watt led modules on eBay, I wanted to build a flashlight out of it.
Now it is finally functioning, but still not finished.
As case I use an 125 mm PVC waste-pipe, in which my old CPU cooler fits perfectly.
Because the LED draws much power, I added an heatsink from an old PC power supply to the hotter mosfet on the step up converter.
The flashlight is powered by an 3S 5000mAh lipo battery, which can keep it lighted for approximately 20 minutes. To increase the running time, I plan to add an potentiometer, to control the brightness.
The whole front part can be easily removed, by unscrewing two wingnuts and turning the part counter clockwise.
In the picture you can see that the LED spreads the light very wide (nearly 180°), so I plan to add a lens and a reflector to it.
Also the back needs to be closed and I want to give the PVC pipe a nicer paint job.
During the past weeks, I had some time to finish my flashlight. The most noticeable change is the new black color, but I also added a cover for the backside, a potentiometer to control the brightness and a lens with reflector. Because the lens focused the individual LEDs, I had to frost it with fine sandpaper. To allow a good airflow, I had to drill some holes in the back cover and I learned, that the material is quite strong but also cracks pretty fast, if the drillbit is to big. But there's nothing that can't be fixed with hotglue :D