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If you are interested in this then google the Motorola chip MC33794 (E-Field Sensor). They do cost $3.00 each. Does the same thing and can be sized to a livingroom size system. I bet the Pic chip costs more than $3.00.
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If you are interested in this then google the Motorola chip MC33794 (E-Field Sensor). They do cost $3.00 each. Does the same thing and can be sized to a livingroom size system. I bet the Pic chip costs more than $3.00.