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Dynamic Touch Surface

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Uploaded by on Dec 13, 2008

Using eight suction cup microphones connected to a PIC32 microprocessor, we can turn any surface into a touch surface. It connects to the computer via USB is recognized as a mouse.

The position of the input on the surface is determined by the Time Difference of Arrival (TDOA) of sound waves to the different microphones, a method known as trilateration.

Using a projector connected to a computer, we demonstrate our device by turning a whiteboard into a touch screen interface.

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  • something similar is used to determine where bullet hits the target on modern electronic target systems

  • good

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