Microchip PIC microcomputer: What functions are required to realize a waterproof capacitive sensor with a PIC microcomputer?
Microchip's PIC microcontrollers use a driven shield to improve water resistance.
In order to realize the waterproof function, it is necessary to install a Hardware capacitive voltage driver (HCVD) or an Analog to digital converter with computation (ADC2) among the internal functions of the PIC microcomputer.
Please refer to the link below for Microchip's capacitive sensor lineup.
http://www.microchip.com/ParamChartSearch/chart.aspx?branchID=30045
For more information on Microchip's waterproofing solutions, please visit the link below.
[Design Guide for Capacitive Touch Sensors]
1.4 Shield
http://ww1.microchip.com/downloads/jp/AppNotes/00002098A_JP.pdf
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