Ever since digital cameras took decent video I stopped carrying around my DV video camera and instead use my point and shoot digital camera to take a few minutes of MOV or MPG video here and there. The only problem is my digicam is not equipped with a light to brighten up the videos I take indoors. There are some small LED lights you can buy online that attach to the 1/4" hole under you camera, but they cost from $30 to $40 and create a spotlight on your subjects. They also use SIX coin cells and only last 4 hours. I'd rather have a small light that uses rechargeable AAA's and lasts longer. (this one can last about 12 hours!)
So I decided to make my own using parts for less than $2.
The goal was to construct something simply and cheaply.
This is not the most efficient want to drive LEDs but it works very well for the price.
It requires some drilling and soldering skills but its pretty easy.
The only parts are
4xAAA battery holder with switch- $1.39
3 White LEDs 60 deg viewing angle (you can also try 4 LEDs) 12 cents each
10 ohm resistor - 5 cents
Phillips head 1/4-20 aluminum screw 3/8" long 10 cents - Hardware store
You can probably get all these parts from you favorite online electronics store, but if you want the same wide angle LEDs I used or just want to save some bucks on shipping you can buy the entire kit here.
This project will continue to evolve on my site so check it out for updates in the future.
*5mm drill bit or #9 drill bit - for LED holes
*If you dont have that you can use a 3/16" size and work it bigger.
Here is a video to show how it lights up my bathroom (its the only room where i can block out ambient light)
NOTE: I have a new and improved version with 180 lumens