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Thursday 20 December 2007

My stealth infra-red camera!

So, finally out of hibernation!


The past month passed with lots of activity and curricular happenings leaving me with no time to spare.I happened to come across an interesting article in Chip India Magazine. It was on how to check whether a remote control's (working on Infra-Red) battery has drained out or not.

Their advice was to use a digital camera to check the front portion of the remote control keeping any button on the remote control pressed. (ie. check the led in the front). You will see a white light beam on the LCD of digi-cam coming out of the front portion of your Remote control. Infact its the infrared beam shooting out of your remote onto the TV. So if beam is visible, baterry and the buttons are working else not.

My friend, Fish and I came to the conclusion that the light sensors in a digi-cam must be sensitive to spectrums other than visible range. Wow, I never knew that Infra-red spectrum can be seen on digital cameras. Though it can be explained easily by science, but the fact that seeing something invisible to naked eyes using common minimal tools as in here a little mobile camera is really fun!

Though the beam is not strong enough, I still managed to use it to click and shoot pics n tiny movies in pitch darkness. Voila! I have a stealth Infra-red camera! He.He.He..

Check them..

Videos

1)keyhole in Infrared and visible light



Pictures. (my remote, before pressing a key, after pressing a button )

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