Hand on capacitive touch screen
by damienb, published
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The Microchip sensor is also using mutual-capacitance (capacity measure between 2 electrodes). The Difference is in the number and shape of the electrodes. To detect the gestures at a few cm from the surface they are using 1 driver and 5 big receivers (see p11 http://ww1.microchip.com/downl.... This is great to "sense" gestures like shown in the video using only 5 measures. In the case of capacitive touch screens, the number of electrodes is vastly larger (the 15inches in this "thing" has 40*70~2800 intersections). So you get a very good resolution and you are able to detect multi-touch gestures.
Neat! any chance for something like MGC3130 (http://www.youtube.com/watch?v... ? :-)
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