how to change your webcam so it can see in the dark. The CCDs of all digital cameras are responsive to infrared light (IR) as well as visible light. However, most webcams come with a filter installed to block out IR light. This makes the image less washed out but it keeps you from being able to see in the dark (using IR illumination). This intructable shows you how to remove the filter from a "Logitech quickcam chat". Removing the filter from other webcams will probably be a bit easier, but they all follow the same procedure.
This is where I first learned you could do this:
http://www.hoagieshouse.com/IR/unscrew the webcam case, see the screw hole? This webcam (logitech quickcam chat) had only one phillips screw holding it together.
The two halves will come apart and out drops the circuit board with wire/etc attached.
I discovered that the Infra red filter to be very fragile, i managed to shatter it with a jewellers screwdriver. Then it was a simple matter to prize the small bits of glass out of the lens assembly, wear safety glasses when doing this!
The IKASU has 6 white LED's on the front which are operated by a photocell, im tempted to replace these with 6 Infra red LED's to see what the results are like.