If your desk drawers or kitchen cupboards have a dark interior that makes it hard to find items, consider adding strips of LED lighting controlled by a magnetic alarm switch.
DIY weblog Make contributor Mahesh Venkitachalam figured out that if he wired a Mosfet BS170 transistor and a magnetic alarm switch to strips of LED lighting he had a basic lighting system where the LEDs came on whenever the door or drawer was opened.
See the source page below for full instructions including a wiring diagram and step-by-step photos.
Automatica Lights for Desk Interior [Make Projects via Hack-A-Day]
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