Parking Warning System
Approx construction cost US$29
Parking warning system project -- EPE Online March 2000 This is a device to aid you in parking a car in a garage by providing a visual and audible warning. It is easily set up by mounting it onto the wall at the end of the garage.

The device produces a coded infrared (IR) beam which detects the proximity of the vehicle by bouncing IR off it as it approaches, without being confused by other IR sources. When the vehicle is within the preset range, an audible warning is given and a group of light emitting diodes (LEDs) are turned on.

More details on this construction project can be found in the March 2000 issue of EPE Online, the world's first web-delivered electronics and computing hobbyist magazine.

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